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Recurrent Second-Trimester Euploid Pregnancy Loss Associated With Maternal–Paternal HLA Compatibility: Review Based on a Case Report of Immune-Mediated Failure 妊娠中期复发性整倍体妊娠丢失与双亲HLA相容性相关:基于一例免疫介导的失败报告的回顾。
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-02-15 DOI: 10.1111/aji.70217
Sonia Gayete-Lafuente, Lara Guijarro-Baude, Elizabeth Choong, David Barad, Norbert Gleicher

Problem

Recurrent pregnancy loss (RPL) is often unexplained, and emerging evidence supports a potential alloimmune contribution in a subset of patients. Excessive maternal–paternal HLA compatibility has been proposed as a mechanism impairing maternal–fetal immune tolerance. This review, based on a representative clinical case, examines the role of HLA sharing in recurrent euploid pregnancy loss.

Method of Study

A narrative review of current literature on alloimmune mechanisms in RPL, including classical and non-classical HLA pathways and KIR-HLA interactions, was conducted. A clinical case involving recurrent second-trimester euploid losses despite multimodal immunotherapy was used to contextualize these mechanisms.

Results

The patient experienced multiple losses of chromosomally normal fetuses despite treatment with intravenous immunoglobulin, corticosteroids, hydroxychloroquine, progesterone, aspirin, and low-molecular-weight heparin. HLA typing demonstrated allele sharing across four of five loci, suggesting markedly reduced immunogenetic diversity at the maternal–fetal interface. This pattern aligned with proposed mechanisms of impaired trophoblast-immune signaling and inadequate tolerance induction.

Conclusions

Excessive maternal–paternal HLA compatibility may contribute to recurrent euploid pregnancy loss through disruption of maternal–fetal immune tolerance. This case-based review underscores the need for individualized immunologic assessment and further research into targeted therapies for alloimmune-mediated reproductive failure.

问题:复发性妊娠丢失(RPL)通常是无法解释的,新出现的证据支持在一部分患者中潜在的同种免疫贡献。过度的双亲HLA相容性被认为是一种损害母胎免疫耐受的机制。本综述基于一个具有代表性的临床病例,探讨HLA共享在复发性整倍体妊娠丢失中的作用。研究方法:对目前关于RPL同种免疫机制的文献进行综述,包括经典和非经典HLA途径以及KIR-HLA相互作用。一个临床病例涉及复发性妊娠中期整倍体损失,尽管多模式免疫治疗被用来背景这些机制。结果:尽管静脉注射免疫球蛋白、皮质类固醇、羟氯喹、黄体酮、阿司匹林和低分子肝素治疗,患者仍经历了多次染色体正常胎儿的丢失。HLA分型显示等位基因在5个位点中的4个位点共享,表明母胎界面的免疫遗传多样性显著降低。这种模式与滋养细胞免疫信号受损和耐受诱导不足的机制一致。结论:过度的双亲HLA相容性可能通过破坏母胎免疫耐受导致复发性整倍体妊娠丢失。这一基于病例的综述强调了个体化免疫评估和进一步研究同种异体免疫介导的生殖衰竭靶向治疗的必要性。
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引用次数: 0
Hofbauer Cells in Pregnancies Complicated by Gestational Diabetes Mellitus and Pathological Fetal Growth 妊娠合并妊娠期糖尿病与病理性胎儿生长的Hofbauer细胞
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-02-15 DOI: 10.1111/aji.70216
Georgia Fakonti, Georgia Mappa, Nicolas Orsi, Eleanor M. Scott, Beth Holder, Karen Forbes

Problem

Gestational diabetes mellitus (GDM) increases the risk of large-for-gestational-age (LGA) birth and long-term cardiometabolic complications in offspring, particularly in males. These outcomes are associated with altered placental vascularisation, but the underlying mechanisms remain poorly defined. Hofbauer cells (HBCs) are fetal-origin macrophages located in the villous stroma with established roles in immune regulation and vascularisation.

Method of Study

This study investigated whether HBC abundance and phenotype are associated with fetal growth, fetal sex, and placental vascularisation in term placentae from non-GDM and GDM pregnancies. Pan-macrophage (CD14, CD68), HBC-enriched (FOLR2, VSIG4), M1 (CD86), and M2 (CD163, MRC1) markers were assessed by RT-qPCR and quantitative immunohistochemistry.

Results

In both non-GDM and GDM placentae, all markers, except CD86 were detected, supporting an M2-like HBC phenotype. In GDM placentae, the number of pan-macrophage (CD68), HBC-enriched (FOLR2), and M2-associated (CD163, MRC1) cells were reduced in terminal villi compared with non-GDM controls (p < 0.05; n = 13 non-GDM; n = 12 GDM), indicating reduced HBC abundance without phenotypic switching. Reduced expression of HBC-enriched (FOLR2, VSIG4) and M2-associated (CD163) transcripts supported these findings (p < 0.05; n = 18 non-GDM; n = 19 GDM). No further differences were observed following stratification by fetal growth or sex. HBC-related gene expression correlated positively with the endothelial marker PECAM1/CD31, in both non-GDM and GDM placentae (r ≥ 0.5, p < 0.05).

Conclusions

HBCs abundance is reduced in GDM placentae independently of fetal growth or sex, whilst HBC phenotype is preserved. Reduced HBC abundance may contribute to placental vascular alterations that are characteristic of GDM.

问题:妊娠期糖尿病(GDM)增加了大胎龄(LGA)出生和后代长期心脏代谢并发症的风险,特别是在男性中。这些结果与胎盘血管化的改变有关,但其潜在机制仍不明确。霍夫鲍尔细胞(HBCs)是位于绒毛间质中的胎儿源性巨噬细胞,在免疫调节和血管化中起着既定的作用。研究方法:本研究调查了非GDM和GDM妊娠足月胎盘中HBC丰度和表型是否与胎儿生长、胎儿性别和胎盘血管化相关。采用RT-qPCR和定量免疫组织化学方法评估泛巨噬细胞(CD14、CD68)、hbc富集(FOLR2、VSIG4)、M1 (CD86)和M2 (CD163、MRC1)标志物。结果:在非GDM和GDM胎盘中,检测到除CD86外的所有标记物,支持m2样HBC表型。在GDM胎盘中,与非GDM对照组相比,末端绒毛中泛巨噬细胞(CD68)、HBC富集(FOLR2)和m2相关(CD163, MRC1)细胞的数量减少(p < 0.05; n = 13非GDM; n = 12 GDM),表明HBC丰度降低,但没有表型转换。hbc富集(FOLR2, VSIG4)和m2相关(CD163)转录本的表达减少支持了这些发现(p < 0.05; n = 18非GDM; n = 19 GDM)。在按胎儿生长或性别分层后,未观察到进一步的差异。在非GDM和GDM胎盘中,hbc相关基因表达与内皮标志物PECAM1/CD31呈正相关(r≥0.5,p < 0.05)。结论:GDM胎盘中HBC丰度降低与胎儿生长或性别无关,而HBC表型保留。HBC丰度降低可能导致胎盘血管改变,这是GDM的特征。
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引用次数: 0
SARS-CoV-2 Chronic Intervillositis: Variations of Maternal Antiviral Response SARS-CoV-2慢性绒毛间炎:母体抗病毒反应的变化
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-02-09 DOI: 10.1111/aji.70215
Daria Kozlova, Ori Mayer, Noam Shomron, Yosef Azan, Rani Shlayem, Yevgeni Yegorov, Nir Rainy, Avi Natan, Ana Foigelman Tobar

Problem

Placental compromise is a determining factor in the outcome of pregnancies complicated by maternal SARS-CoV-2 infection. Chronic histiocytic intervillositis (CHI) is the initial response to SARS-CoV-2 infection, but the underlying mechanisms are poorly understood. The aim of this study was to assess the extent and composition of the placental inflammatory response and to explore the relationship between the severity of inflammation and viral levels in the placenta.

Methods of study

Placentas from 43 women who tested positive for SARS-CoV-2 infection at the time of delivery at a single tertiary medical center (8/2020 to 10/2022) were evaluated using quantitative reverse transcription polymerase chain reaction (qRT-PCR), histopathological, ultrastructural, and in situ hybridization studies.

Results

There was a significant association between viral load and severity of CHI with notable involvement of CD20-positive B lymphocytes (100% in patients with diffuse CHI vs 0% in the patients with no inflammation). Both PCR-positive and PCR-negative placentas exhibited varying degrees of inflammation. Electron microscopy confirmed viral particles in PCR- and CHI-negative samples, Additionally, mean gestational age at delivery was significantly lower in the PCR-positive patients.

Conclusion

These findings highlight the complex interplay between maternal SARS-CoV-2 infection and placental inflammation. The inflammatory response may extend beyond the presence of the virus per se, and viral load differences linked to individual immune response variability may influence the development of inflammation. Further research is needed to elucidate the mechanisms by which SARS-CoV-2 impacts maternal and neonatal health outcomes and provide insight into the implications of viral infections during pregnancy.

问题:胎盘受损是孕妇合并SARS-CoV-2感染妊娠结局的决定性因素。慢性组织细胞绒毛间炎(CHI)是对SARS-CoV-2感染的初始反应,但其潜在机制尚不清楚。本研究的目的是评估胎盘炎症反应的程度和组成,并探讨炎症的严重程度与胎盘中病毒水平之间的关系。研究方法:采用定量逆转录聚合酶链式反应(qRT-PCR)、组织病理学、超微结构和原位杂交研究,对在单一三级医疗中心(2020年8月至2022年10月)分娩时检测为SARS-CoV-2感染阳性的43名妇女的胎盘进行评估。结果:cd20阳性B淋巴细胞的参与与病毒载量和CHI严重程度之间存在显著相关性(弥漫性CHI患者为100%,而无炎症患者为0%)。pcr阳性和pcr阴性胎盘均表现出不同程度的炎症。电镜检查证实PCR阴性和chi阴性的样本中存在病毒颗粒。此外,PCR阳性患者的平均胎龄明显较低。结论:这些发现突出了母体SARS-CoV-2感染与胎盘炎症之间复杂的相互作用。炎症反应可能超出病毒本身的存在,与个体免疫反应变异性相关的病毒载量差异可能影响炎症的发展。需要进一步的研究来阐明SARS-CoV-2影响孕产妇和新生儿健康结局的机制,并深入了解怀孕期间病毒感染的影响。
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引用次数: 0
Enhanced CD56 Expression and Increased Number of CD56+bright Cells in the Peripheral Blood of Untreated Endometriosis Patients 未经治疗的子宫内膜异位症患者外周血CD56表达增强和CD56+亮细胞数量增加
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-02-04 DOI: 10.1111/aji.70214
Emma Björk, Pernilla Israelsson, Olga Nagaeva, Lucia Mincheva-Nilsson, Ulrika Ottander

Problem

NK-cell dysfunction in endometriosis is suggested to contribute to the survival of ectopic endometrial tissue. However, the underlying causes of this impairment remain unclear. NK cells are divided into: CD56+bright, which produce high amounts of cytokines but have low or no cytotoxic ability, and CD56+dim, which are mainly cytotoxic. CD56+bright NK cells, constitutively present in human endometrium (eNK cells), represent only 0–2% of NK cells in PBMC, where CD56+dim cells dominate.

Method of Study

NK-cell subpopulations and NKG2D receptor expression in PBMC were analyzed by flow cytometry in two cohorts of untreated and treated endometriosis patients and healthy age-matched controls.

Results

Elevated numbers of CD56+bright cells were observed in 8 of 21 untreated endometriosis patients compared to controls. These numbers were normalized following surgery and hormonal treatment. The NKG2D receptor expression was reduced in untreated patients compared to controls and treated patients.

Conclusions

The significantly increased proportion of peripheral CD56+bright NK/eNK cells may result from migration of these cells from ectopic endometrial tissue. The downregulation of NKG2D receptor expression in PBMCs may be mediated by immunosuppressive endometriotic exosomes, as previously reported by us. Taken together, our results suggest that: (1) the impaired NK cell cytotoxicity in untreated endometriosis patients may be due both to an influx of CD56+bright/eNK cells and exosome-induced NKG2D receptor downregulation; and (2) elevated numbers of peripheral CD56+bright NK cells could be considered as a potential diagnostic marker for endometriosis.

问题:nk细胞功能障碍在子宫内膜异位症中被认为有助于异位子宫内膜组织的存活。然而,这种损伤的根本原因尚不清楚。NK细胞分为CD56+bright和CD56+dim两种,前者产生大量细胞因子,但具有较低或无细胞毒性,后者主要具有细胞毒性。CD56+亮NK细胞组成性地存在于人子宫内膜(eNK细胞)中,仅占PBMC中NK细胞的0-2%,而CD56+暗细胞占主导地位。研究方法:通过流式细胞术分析两组未治疗和治疗的子宫内膜异位症患者和年龄匹配的健康对照者PBMC中nk细胞亚群和NKG2D受体的表达。结果:与对照组相比,21例未经治疗的子宫内膜异位症患者中有8例CD56+亮细胞数量升高。这些数字在手术和激素治疗后正常化。与对照组和治疗组相比,未治疗组的NKG2D受体表达降低。结论:外周CD56+亮NK/eNK细胞比例的显著增加可能是由于这些细胞从异位子宫内膜组织迁移所致。正如我们之前报道的那样,pbmc中NKG2D受体表达的下调可能是由免疫抑制性子宫内膜异位症外泌体介导的。综上所述,我们的研究结果表明:(1)未经治疗的子宫内膜异位症患者的NK细胞毒性受损可能是由于CD56+bright/eNK细胞的涌入和外泌体诱导的NKG2D受体下调;(2)外周血CD56+亮NK细胞数量升高可被认为是子宫内膜异位症的潜在诊断标志物。
{"title":"Enhanced CD56 Expression and Increased Number of CD56+bright Cells in the Peripheral Blood of Untreated Endometriosis Patients","authors":"Emma Björk,&nbsp;Pernilla Israelsson,&nbsp;Olga Nagaeva,&nbsp;Lucia Mincheva-Nilsson,&nbsp;Ulrika Ottander","doi":"10.1111/aji.70214","DOIUrl":"10.1111/aji.70214","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Problem</h3>\u0000 \u0000 <p>NK-cell dysfunction in endometriosis is suggested to contribute to the survival of ectopic endometrial tissue. However, the underlying causes of this impairment remain unclear. NK cells are divided into: CD56<sup>+bright</sup>, which produce high amounts of cytokines but have low or no cytotoxic ability, and CD56<sup>+dim</sup>, which are mainly cytotoxic. CD56<sup>+bright</sup> NK cells, constitutively present in human endometrium (eNK cells), represent only 0–2% of NK cells in PBMC, where CD56<sup>+dim</sup> cells dominate.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Method of Study</h3>\u0000 \u0000 <p>NK-cell subpopulations and NKG2D receptor expression in PBMC were analyzed by flow cytometry in two cohorts of untreated and treated endometriosis patients and healthy age-matched controls.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Elevated numbers of CD56<sup>+bright</sup> cells were observed in 8 of 21 untreated endometriosis patients compared to controls. These numbers were normalized following surgery and hormonal treatment. The NKG2D receptor expression was reduced in untreated patients compared to controls and treated patients.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The significantly increased proportion of peripheral CD56<sup>+bright </sup>NK/eNK cells may result from migration of these cells from ectopic endometrial tissue. The downregulation of NKG2D receptor expression in PBMCs may be mediated by immunosuppressive endometriotic exosomes, as previously reported by us. Taken together, our results suggest that: (1) the impaired NK cell cytotoxicity in untreated endometriosis patients may be due both to an influx of CD56<sup>+bright</sup>/eNK cells and exosome-induced NKG2D receptor downregulation; and (2) elevated numbers of peripheral CD56<sup>+bright</sup> NK cells could be considered as a potential diagnostic marker for endometriosis.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7665,"journal":{"name":"American Journal of Reproductive Immunology","volume":"95 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12873557/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146117637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydroxychloroquine Based Immunomodulatory Therapy Improves Pregnancy Outcomes in Women with Recurrent Implantation Failure Undergoing in Vitro Fertilization and Embryo Transfer 羟氯喹免疫调节疗法改善体外受精和胚胎移植中反复植入失败妇女的妊娠结局。
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-01-31 DOI: 10.1111/aji.70212
Ziyi Song, Fang Fang, Yunxia Gong, Yuke Hou, Wenqiong Wang, Chun Li, Xuewu Zhang, Qun Lu

Problem

Recurrent implantation failure (RIF) remains a significant challenge in reproductive medicine, with immune dysfunction being a key contributing factor to implantation failure. However, data on the effectiveness of immunomodulatory therapy in RIF patients remain limited. This study aimed to assess the impact of immunomodulatory therapy on pregnancy outcomes in women with RIF undergoing in Vitro fertilization-embryo transfer (IVF-ET).

Method of Study

This retrospective cohort study included women with RIF between 2016 and 2019. Patients in the treatment group received hydroxychloroquine (HCQ)-based immunomodulatory therapy after immunological evaluation, while those in the control group did not receive immunomodulatory treatment. Generalized estimating equations assessed the association between HCQ-based immunomodulatory therapy and pregnancy outcomes. Additionally, patients were stratified based on autoimmune antibody status, and subgroup analyses were conducted to further evaluate treatment effects.

Results

A total of 320 patients were included in the study, with 74 receiving HCQ-based immunomodulatory therapy (treatment group) and 246 undergoing IVF-ET alone (control group). The treatment group showed higher biochemical pregnancy (49.5% vs. 31.7%, p < 0.001), clinical pregnancy (43.8% vs. 24.3%, p < 0.001), embryo implantation (30.7% vs. 17.3%, p < 0.001), and live birth rates (33.3% vs. 12.6%, p < 0.001). Multivariate regression identified HCQ-based immunomodulatory therapy as an independent predictor of biochemical pregnancy (OR = 2.049, 95% CI: 1.440-2.915, P<0.001), clinical pregnancy (OR = 2.424, 95% CI: 1.613-3.644, P<0.001), and live birth (OR = 3.555, 95% CI: 2.235-5.652, P<0.001). Stratified analysis confirmed its benefit in both autoimmune antibody positive and negative patients.

Conclusions

Real-world evidence revealed the potential role of HCQ-based immunomodulatory therapy in improving pregnancy outcomes in IVF-ET in patients with RIF.

问题:复发性着床失败(RIF)仍然是生殖医学的一个重大挑战,免疫功能障碍是着床失败的关键因素。然而,关于免疫调节治疗在RIF患者中的有效性的数据仍然有限。本研究旨在评估免疫调节治疗对接受体外受精-胚胎移植(IVF-ET)的RIF妇女妊娠结局的影响。研究方法:这项回顾性队列研究纳入了2016年至2019年期间患有RIF的女性。治疗组患者经免疫学评价后给予以羟氯喹(HCQ)为基础的免疫调节治疗,对照组不给予免疫调节治疗。广义估计方程评估了基于hcq的免疫调节治疗与妊娠结局之间的关系。此外,根据自身免疫抗体状态对患者进行分层,并进行亚组分析以进一步评估治疗效果。结果:共纳入320例患者,其中74例患者接受基于hcq的免疫调节治疗(治疗组),246例患者单独接受IVF-ET治疗(对照组)。治疗组生化妊娠(49.5% vs. 31.7%, p < 0.001)、临床妊娠(43.8% vs. 24.3%, p < 0.001)、胚胎着床(30.7% vs. 17.3%, p < 0.001)、活产率(33.3% vs. 12.6%, p < 0.001)较高。多因素回归发现基于hcq的免疫调节治疗是生化妊娠的独立预测因子(OR = 2.049, 95% CI: 1.440-2.915)。结论:真实世界的证据揭示了基于hcq的免疫调节治疗在改善RIF患者IVF-ET妊娠结局方面的潜在作用。
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引用次数: 0
Decidual CD4 Effector Memory and Resident Memory T Cells Respond to Cord Blood Allo-Antigens 个体CD4效应记忆和常驻记忆T细胞对脐带血同种抗原的反应。
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-01-31 DOI: 10.1111/aji.70213
Zachary T. Koenig, Shruti Eswar, Sayaka Tsuda, Nathan Schuldt, Claire A. Chougnet, Braxton Forde, Sandra Andorf, Tamara Tilburgs

Problem

Maternal CD4 T cells are critical coordinators of maternal–fetal immune tolerance and immunity during pregnancy. Decidual regulatory T cells (TREG) have been shown to provide essential immune suppressive functions to control allogeneic responses and inflammation. Activated CD4 memory T cells form the largest fraction of decidual T cells, yet their diversity, specificity, and functions remain largely undefined.

Method of Study

Using high-dimensional flow cytometry (HDFC), computational and functional analysis to characterize decidual CD4 memory T-cell types and their functions.

Results

Two types of decidual CD4 T cells, the effector memory cells (TEM), and CD69+ PD1+ resident memory cells (TRM) with a strong capacity to respond to cord blood allo-antigens were identified. Important differences were found in their phenotypic, cytotoxic, and cytokine profiles that were dependent on fetal sex, mode of delivery, and human cytomegalovirus (HCMV) serology.

Conclusions

Thus, decidual CD4 TEM and TRM have unique immune effector functions and the ability to recognize and respond to fetal cord blood. This suggests that decidual CD4 TEM and TRM cells can recognize fetal allo-antigens and, when not adequately controlled, may contribute to placental inflammation. Further definition of decidual TEM and CD69+ PD1+ TRM immune effector functions and specificity has clinical significance to define essential drivers of healthy pregnancy and pregnancy complications.

问题:母体CD4 T细胞是怀孕期间母体-胎儿免疫耐受和免疫的关键协调者。蜕膜调节性T细胞(TREG)已被证明在控制异体反应和炎症方面提供必要的免疫抑制功能。活化的CD4记忆T细胞是个体T细胞中最大的一部分,但它们的多样性、特异性和功能在很大程度上仍不明确。研究方法:采用高维流式细胞术(high-dimensional flow cytometry, HDFC)、计算分析和功能分析方法表征个体CD4记忆t细胞类型及其功能。结果:鉴定出两种对脐带血同种抗原具有较强应答能力的蜕膜CD4 T细胞:效应记忆细胞(TEM)和CD69+ PD1+常驻记忆细胞(TRM)。在表型、细胞毒性和细胞因子谱上发现了重要的差异,这些差异取决于胎儿性别、分娩方式和人巨细胞病毒(HCMV)血清学。结论:个体CD4 TEM和TRM具有独特的免疫效应功能,对胎儿脐带血具有识别和应答能力。这表明蜕膜CD4 TEM和TRM细胞可以识别胎儿异体抗原,如果控制不当,可能会导致胎盘炎症。进一步明确个体TEM和CD69+ PD1+ TRM免疫效应的功能和特异性,对明确健康妊娠和妊娠并发症的重要驱动因素具有临床意义。
{"title":"Decidual CD4 Effector Memory and Resident Memory T Cells Respond to Cord Blood Allo-Antigens","authors":"Zachary T. Koenig,&nbsp;Shruti Eswar,&nbsp;Sayaka Tsuda,&nbsp;Nathan Schuldt,&nbsp;Claire A. Chougnet,&nbsp;Braxton Forde,&nbsp;Sandra Andorf,&nbsp;Tamara Tilburgs","doi":"10.1111/aji.70213","DOIUrl":"10.1111/aji.70213","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Problem</h3>\u0000 \u0000 <p>Maternal CD4 T cells are critical coordinators of maternal–fetal immune tolerance and immunity during pregnancy. Decidual regulatory T cells (T<sub>REG</sub>) have been shown to provide essential immune suppressive functions to control allogeneic responses and inflammation. Activated CD4 memory T cells form the largest fraction of decidual T cells, yet their diversity, specificity, and functions remain largely undefined.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Method of Study</h3>\u0000 \u0000 <p>Using high-dimensional flow cytometry (HDFC), computational and functional analysis to characterize decidual CD4 memory T-cell types and their functions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Two types of decidual CD4 T cells, the effector memory cells (T<sub>EM</sub>), and CD69+ PD1+ resident memory cells (T<sub>RM</sub>) with a strong capacity to respond to cord blood allo-antigens were identified. Important differences were found in their phenotypic, cytotoxic, and cytokine profiles that were dependent on fetal sex, mode of delivery, and human cytomegalovirus (HCMV) serology.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Thus, decidual CD4 T<sub>EM</sub> and T<sub>RM</sub> have unique immune effector functions and the ability to recognize and respond to fetal cord blood. This suggests that decidual CD4 T<sub>EM</sub> and T<sub>RM</sub> cells can recognize fetal allo-antigens and, when not adequately controlled, may contribute to placental inflammation. Further definition of decidual T<sub>EM</sub> and CD69+ PD1+ T<sub>RM</sub> immune effector functions and specificity has clinical significance to define essential drivers of healthy pregnancy and pregnancy complications.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7665,"journal":{"name":"American Journal of Reproductive Immunology","volume":"95 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12859743/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146091679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gut Microbiota Changes After Hormonal or Surgical Treatment for Endometriosis 子宫内膜异位症激素或手术治疗后肠道菌群的变化。
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-01-22 DOI: 10.1111/aji.70211
Yosuke Ono, Osamu Yoshino, Takeshi Sasayama, Masami Ito, Tatsuya Yoshihara, Kota Tanaka, Akiko Nakagomi, Satoko Sasatsu, Maki Ogi, Hikaru Tagaya, Tomohiko Fukuda, Takeshi Nagamatsu, Takuji Yamada

Purpose

Although studies have suggested a link between gut microbiota and endometriosis pathophysiology, the effects of treatment for endometriosis remain unclear.

Methods

In this prospective observational study, 27 patients with stage III/IV endometriosis and 17 healthy controls provided a total of 56 fecal samples. In endometriosis patients, gut microbiota profiles were analyzed before and after hormonal therapy or surgery to assess treatment-related changes. 16S rRNA gene sequencing was used for microbiota analysis.

Results

No differences in α- or β-diversity were observed between the endometriosis and control groups, although patients with endometriosis had high levels of Acidaminococcus, Lachnoclostridium, and Paraprevotella and low levels of Odoribacter (all p < 0.05). Among the eight patients who received hormonal therapy, no significant changes in α- and β-diversity were observed between the pre- and post-treatment samples. A comparison of samples from the same individuals showed an increase in Blautia, which is associated with mental health stability, and a decrease in Sutterella, which is involved in regulating the intestinal barrier. In an exploratory analysis of patients without recurrence after surgery (n = 4), α-diversity significantly increased (p = 0.035), with stable β-diversity. Postsurgical increases were observed in 10 genera, including six inflammation-related taxa; five (Flavonifractor, [Eubacterium]_brachy_group, Hungatella, Incertae_Sedis, and Fournierella) are associated with anti-inflammatory effects.

Conclusions

Hormonal therapy for endometriosis may help not only to control lesions but also to support mental health. Surgical treatment may alter the composition of inflammation-associated gut bacteria; however, these exploratory results from a small cohort should be interpreted with caution. Further studies with larger sample sizes are warranted.

目的:虽然研究表明肠道微生物群与子宫内膜异位症病理生理之间存在联系,但子宫内膜异位症的治疗效果仍不清楚。方法:在这项前瞻性观察研究中,27例III/IV期子宫内膜异位症患者和17名健康对照者共提供56份粪便样本。在子宫内膜异位症患者中,在激素治疗或手术前后分析肠道微生物群概况,以评估治疗相关的变化。采用16S rRNA基因测序进行菌群分析。结果:子宫内膜异位症患者的α-或β-多样性与对照组无显著差异,但酸胺球菌(Acidaminococcus)、Lachnoclostridium、Paraprevotella水平较高,气味杆菌(Odoribacter)水平较低(p < 0.05)。在接受激素治疗的8例患者中,α-和β-多样性在治疗前和治疗后的样本中没有明显变化。对来自同一个人的样本进行比较后发现,与精神健康稳定有关的蓝菌增多,与调节肠道屏障有关的苏氏菌减少。在术后无复发患者(n = 4)的探索性分析中,α-多样性显著增加(p = 0.035), β-多样性保持稳定。术后观察到10个属增加,包括6个炎症相关分类群;五种(黄酮因子,[真杆菌]_brachy_group, Hungatella, Incertae_Sedis和Fournierella)具有抗炎作用。结论:激素治疗子宫内膜异位症不仅有助于控制病变,而且有助于心理健康。手术治疗可能会改变炎症相关肠道细菌的组成;然而,这些来自小群体的探索性结果应该谨慎解释。更大样本量的进一步研究是必要的。
{"title":"Gut Microbiota Changes After Hormonal or Surgical Treatment for Endometriosis","authors":"Yosuke Ono,&nbsp;Osamu Yoshino,&nbsp;Takeshi Sasayama,&nbsp;Masami Ito,&nbsp;Tatsuya Yoshihara,&nbsp;Kota Tanaka,&nbsp;Akiko Nakagomi,&nbsp;Satoko Sasatsu,&nbsp;Maki Ogi,&nbsp;Hikaru Tagaya,&nbsp;Tomohiko Fukuda,&nbsp;Takeshi Nagamatsu,&nbsp;Takuji Yamada","doi":"10.1111/aji.70211","DOIUrl":"10.1111/aji.70211","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>Although studies have suggested a link between gut microbiota and endometriosis pathophysiology, the effects of treatment for endometriosis remain unclear.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In this prospective observational study, 27 patients with stage III/IV endometriosis and 17 healthy controls provided a total of 56 fecal samples. In endometriosis patients, gut microbiota profiles were analyzed before and after hormonal therapy or surgery to assess treatment-related changes. 16S rRNA gene sequencing was used for microbiota analysis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>No differences in α- or β-diversity were observed between the endometriosis and control groups, although patients with endometriosis had high levels of <i>Acidaminococcus</i>, <i>Lachnoclostridium</i>, and <i>Paraprevotella</i> and low levels of <i>Odoribacter</i> (all <i>p</i> &lt; 0.05). Among the eight patients who received hormonal therapy, no significant changes in α- and β-diversity were observed between the pre- and post-treatment samples. A comparison of samples from the same individuals showed an increase in <i>Blautia</i>, which is associated with mental health stability, and a decrease in <i>Sutterella</i>, which is involved in regulating the intestinal barrier. In an exploratory analysis of patients without recurrence after surgery (<i>n</i> = 4), α-diversity significantly increased (<i>p</i> = 0.035), with stable β-diversity. Postsurgical increases were observed in 10 genera, including six inflammation-related taxa; five (<i>Flavonifractor</i>, <i>[Eubacterium]_brachy_group</i>, <i>Hungatella</i>, <i>Incertae_Sedis</i>, and <i>Fournierella</i>) are associated with anti-inflammatory effects.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Hormonal therapy for endometriosis may help not only to control lesions but also to support mental health. Surgical treatment may alter the composition of inflammation-associated gut bacteria; however, these exploratory results from a small cohort should be interpreted with caution. Further studies with larger sample sizes are warranted.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7665,"journal":{"name":"American Journal of Reproductive Immunology","volume":"95 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146028099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mouse Trophoblast Stem Cells Are Deficient in TNFα-Activated NFκB Signaling Pathway and Inflammatory Response 小鼠滋养细胞干细胞缺乏tnf α-激活的NFκB信号通路和炎症反应。
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-01-21 DOI: 10.1111/aji.70208
Yeseul Bae, Marwah Walid Ali Alzara, Yan-Lin Guo

Problem

We recently reported that trophoblast stem cells (TSCs) and TSC-differentiated trophoblasts (TSC-TBs) do not respond to TNFα. This immunological property enables these cells to avoid the cytotoxic effects induced by the combination of TNFα and IFNγ. The goal of this study is to elucidate the molecular basis for the unresponsiveness of TSCs and TSC-TBs to TNFα and assess the functionality of TNFα signaling pathways in these cells.

Method

We compared the responses of TSCs and TSC-TBs to TNFα with those of mouse embryonic fibroblasts (MEFs). Genome-wide transcriptomic profiling was performed using RNA-seq data, including the TNFα signaling pathway, TNFα-induced expression of NFκB target genes, and the transcriptional changes and functional pathway enrichment associated with TSC differentiation.

Results

The data provide a comprehensive view of TNFα-induced NFκB activation and the subsequent induction of NFκB target genes with diverse functions. In MEFs, TNFα upregulates or downregulates the transcription of numerous NFκB target genes, but it has little to no effect on gene expression in TSCs and TSC-TBs. Nevertheless, many NFκB target genes essential for shared or cell type-specific functions are expressed in TSCs and TSC-TBs and are regulated in a cell type-specific manner.

Conclusions

The results provide the molecular basis for the lack of TNFα-induced inflammatory responses in TSCs and TSC-TBs. They also suggest that TSCs and TSC-TBs have evolved mechanisms to avoid the cytotoxic effects associated with TNFα-induced inflammation response, while still permitting the expression of other NFκB target genes essential for their cellular functions.

问题:我们最近报道了滋养细胞干细胞(TSCs)和滋养细胞分化的滋养细胞(TSC-TBs)对TNFα没有反应。这种免疫特性使这些细胞能够避免TNFα和IFNγ联合诱导的细胞毒性作用。本研究的目的是阐明TSCs和tsc - tb对TNFα无反应的分子基础,并评估这些细胞中TNFα信号通路的功能。方法:比较小鼠胚胎成纤维细胞(mef)和TSCs、tsc - tb对TNFα的反应。利用RNA-seq数据进行全基因组转录组学分析,包括TNFα信号通路、TNFα诱导的NFκB靶基因表达,以及与TSC分化相关的转录变化和功能通路富集。结果:这些数据提供了tnf α-诱导的NFκB活化和随后诱导不同功能的NFκB靶基因的全面视图。在mef中,TNFα上调或下调许多NFκB靶基因的转录,但对TSCs和tsc - tb中的基因表达影响很小或没有影响。然而,许多共享或细胞类型特异性功能所必需的NFκB靶基因在TSCs和tsc - tb中表达,并以细胞类型特异性的方式进行调节。结论:本研究结果为TSCs和tsc - tb缺乏tnf α诱导的炎症反应提供了分子基础。他们还表明,TSCs和tsc - tb已经进化出了避免与tnf α诱导的炎症反应相关的细胞毒性作用的机制,同时仍然允许其他对其细胞功能至关重要的NFκB靶基因的表达。
{"title":"Mouse Trophoblast Stem Cells Are Deficient in TNFα-Activated NFκB Signaling Pathway and Inflammatory Response","authors":"Yeseul Bae,&nbsp;Marwah Walid Ali Alzara,&nbsp;Yan-Lin Guo","doi":"10.1111/aji.70208","DOIUrl":"10.1111/aji.70208","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Problem</h3>\u0000 \u0000 <p>We recently reported that trophoblast stem cells (TSCs) and TSC-differentiated trophoblasts (TSC-TBs) do not respond to TNFα. This immunological property enables these cells to avoid the cytotoxic effects induced by the combination of TNFα and IFNγ. The goal of this study is to elucidate the molecular basis for the unresponsiveness of TSCs and TSC-TBs to TNFα and assess the functionality of TNFα signaling pathways in these cells.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Method</h3>\u0000 \u0000 <p>We compared the responses of TSCs and TSC-TBs to TNFα with those of mouse embryonic fibroblasts (MEFs). Genome-wide transcriptomic profiling was performed using RNA-seq data, including the TNFα signaling pathway, TNFα-induced expression of NFκB target genes, and the transcriptional changes and functional pathway enrichment associated with TSC differentiation.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The data provide a comprehensive view of TNFα-induced NFκB activation and the subsequent induction of NFκB target genes with diverse functions. In MEFs, TNFα upregulates or downregulates the transcription of numerous NFκB target genes, but it has little to no effect on gene expression in TSCs and TSC-TBs. Nevertheless, many NFκB target genes essential for shared or cell type-specific functions are expressed in TSCs and TSC-TBs and are regulated in a cell type-specific manner.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>The results provide the molecular basis for the lack of TNFα-induced inflammatory responses in TSCs and TSC-TBs. They also suggest that TSCs and TSC-TBs have evolved mechanisms to avoid the cytotoxic effects associated with TNFα-induced inflammation response, while still permitting the expression of other NFκB target genes essential for their cellular functions.</p>\u0000 </section>\u0000 </div>","PeriodicalId":7665,"journal":{"name":"American Journal of Reproductive Immunology","volume":"95 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146008473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Role of Myeloid-Derived Suppressor Cells as a Potential Biomarker in Implanation Failure: A Systematic Review 髓源性抑制细胞作为植入失败的潜在生物标志物的作用:系统综述。
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-01-19 DOI: 10.1111/aji.70203
Shubhangi Jha, Suresh Singh Yadav, Rohina Aggarwal, Rohini R. Nair
<div> <section> <h3> Background</h3> <p>Pregnancy requires maternal immune tolerance of the semi-allogeneic fetus without compromising host defense. Myeloid-derived suppressor cells (MDSCs) have emerged as key regulators of maternal fetal tolerance, but their role in early miscarriage (EM), recurrent pregnancy loss (RPL), and recurrent implantation failure (RIF) remains incompletely defined.</p> </section> <section> <h3> Objective</h3> <p>To systematically evaluate the role of MDSCs in EM, RPL, and RIF and assess their potential as biomarkers and therapeutic targets in implantation failure and pregnancy loss.</p> </section> <section> <h3> Methodology</h3> <p>A systematic review in accordance with PRISMA guidelines. Searches were conducted in Google Scholar up to April 13, 2025, using the terms “Myeloid Derived Suppressor Cells,” “in vitro fertilization,” “early miscarriage,” “pregnancy loss,” and “implantation failure.” Studies were eligible if they quantified MDSCs in peripheral blood or endometrial samples of women with EM, RPL, or RIF and animal-only studies. Reviews, abstracts, and inaccessible full texts were excluded.</p> </section> <section> <h3> Results</h3> <p>Of 70 records identified, 11 met inclusion criteria (seven human, five murine, one has included human samples and murine models). In human studies, reduced granulocytic MDSCs (G-MDSCs) were strongly associated with EM and RPL, correlating with low estradiol/progesterone, impaired STAT3 signaling, and a Th1-dominant cytokine milieu. Findings in RIF were heterogeneous: some reported decreased polymorphonuclear MDSCs with functional impairment, while others observed elevated monocytic MDSCs (M-MDSCs) with diminished suppressive capacity, suggesting dysfunctional or compensatory expansion. Placental enrichment of G-MDSCs demonstrated their tolerogenic role in situ, promoting Treg induction and macrophage polarization. Murine models confirmed it as the cause since MDSC depletion abolished pregnancy, while progesterone-STAT3-ROS signaling supported their expansion and suppressive function. Adoptive MDSC transfer partially rescued fetal resorption in abortion-prone models.</p> </section> <section> <h3> Conclusions</h3> <p>MDSCs are central to maternal fetal tolerance, and their dysregulation contributes to EM, RPL, and RIF. Human and animal data support their potential as predictive biomarkers and therapeutic targets in implantation failure. Standardization of MDSC phenotyping and mechanistic studies of subset-specific functions are warranted to advance clinical translation.</p> </
背景:怀孕需要母体对半异体胎儿的免疫耐受而不影响宿主的防御。髓源性抑制细胞(MDSCs)已成为母体胎儿耐受性的关键调节因子,但它们在早期流产(EM)、复发性妊娠丢失(RPL)和复发性植入失败(RIF)中的作用仍未完全确定。目的:系统评价MDSCs在EM、RPL和RIF中的作用,并评估其作为着床失败和妊娠丢失的生物标志物和治疗靶点的潜力。方法:根据PRISMA指南进行系统审查。截至2025年4月13日,b谷歌Scholar中使用“髓系衍生抑制细胞”、“体外受精”、“早期流产”、“妊娠丢失”和“植入失败”等术语进行了搜索。如果研究量化了EM、RPL或RIF女性外周血或子宫内膜样本中的MDSCs,并且仅限动物研究,则该研究是合格的。综述、摘要和无法获取的全文被排除在外。结果:在鉴定的70条记录中,11条符合纳入标准(7条人,5条鼠,1条包括人样本和鼠模型)。在人体研究中,减少的粒细胞MDSCs (G-MDSCs)与EM和RPL密切相关,与低雌二醇/孕酮、STAT3信号受损和th1主导的细胞因子环境相关。RIF的研究结果是不一致的:一些报告了功能受损的多形核MDSCs减少,而另一些报告了抑制能力下降的单核细胞MDSCs (M-MDSCs)升高,表明功能失调或代偿性扩张。胎盘富集G-MDSCs显示其原位耐受性作用,促进Treg诱导和巨噬细胞极化。小鼠模型证实这是由于MDSC耗尽导致妊娠终止,而孕激素- stat3 - ros信号支持其扩增和抑制功能。在易流产模型中,采用骨髓干细胞移植部分挽救了胎儿吸收。结论:MDSCs是母体胎儿耐受的核心,其失调会导致EM、RPL和RIF。人类和动物数据支持它们作为植入失败的预测性生物标志物和治疗靶点的潜力。MDSC表型的标准化和亚群特异性功能的机制研究是推进临床翻译的必要条件。
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引用次数: 0
Testosterone-Induced Pyroptotic Death of Ovarian Granulosa Cells in PCOS Might Involve Both GSDMD and GSDME, the Latter Possibly Enabling a Crosstalk Between Apoptosis and Pyroptosis 睾丸激素诱导的PCOS卵巢颗粒细胞焦亡可能涉及GSDMD和GSDME,后者可能导致细胞凋亡和焦亡之间的串扰。
IF 2.4 3区 医学 Q3 IMMUNOLOGY Pub Date : 2026-01-19 DOI: 10.1111/aji.70207
Caglar Berkel
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引用次数: 0
期刊
American Journal of Reproductive Immunology
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