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Zhong XQ, Yan Q, Chen ZG, Jia CH, Li XH, Liang ZY, Gu J, Wei HL, Lian CY, Zheng J, Cui QL. Umbilical Cord Blood-Derived Exosomes From Very Preterm Infants With Bronchopulmonary Dysplasia Impaired Endothelial Angiogenesis: Roles of Exosomal MicroRNAs. Front Cell Dev Biol 2021; 9:637248. [PMID: 33842462 PMCID: PMC8027316 DOI: 10.3389/fcell.2021.637248] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/22/2021] [Indexed: 12/13/2022] Open
Abstract
Premature infants have a high risk of bronchopulmonary dysplasia (BPD), which is characterized by abnormal development of alveoli and pulmonary vessels. Exosomes and exosomal miRNAs (EXO-miRNAs) from bronchoalveolar lavage fluid are involved in the development of BPD and might serve as predictive biomarkers for BPD. However, the roles of exosomes and EXO-miRNAs from umbilical cord blood of BPD infants in regulating angiogenesis are yet to be elucidated. In this study, we showed that umbilical cord blood-derived exosomes from BPD infants impaired angiogenesis in vitro. Next-generation sequencing of EXO-miRNAs from preterm infants without (NBPD group) or with BPD (BPD group) uncovered a total of 418 differentially expressed (DE) EXO-miRNAs. These DE EXO-miRNAs were primarily enriched in cellular function-associated pathways including the PI3K/Akt and angiogenesis-related signaling pathways. Among those EXO-miRNAs which are associated with PI3K/Akt and angiogenesis-related signaling pathways, BPD reduced the expression of hsa-miR-103a-3p and hsa-miR-185-5p exhibiting the most significant reduction (14.3% and 23.1% of NBPD group, respectively); BPD increased hsa-miR-200a-3p expression by 2.64 folds of the NBPD group. Furthermore, overexpression of hsa-miR-103a-3p and hsa-miR-185-5p in normal human umbilical vein endothelial cells (HUVECs) significantly enhanced endothelial cell proliferation, tube formation, and cell migration, whereas overexpressing hsa-miR-200a-3p inhibited these cellular responses. This study demonstrates that exosomes derived from umbilical cord blood of BPD infants impair angiogenesis, possibly via DE EXO-miRNAs, which might contribute to the development of BPD.
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Affiliation(s)
- Xin-Qi Zhong
- Department of Neonatology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangzhou, China
| | - Qin Yan
- Department of Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhuang-Gui Chen
- Department of Pediatrics and Department of Allergy, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chun-Hong Jia
- Department of Neonatology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiu-Hong Li
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Zi-Yan Liang
- Department of Neonatology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jian Gu
- Department of Neonatology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hui-Ling Wei
- Department of Neonatology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chang-Yu Lian
- Department of Neonatology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jing Zheng
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI, United States
| | - Qi-Liang Cui
- Department of Neonatology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangzhou, China
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Zhu D, Tan J, Maleken AS, Muljadi R, Chan ST, Lau SN, Elgass K, Leaw B, Mockler J, Chambers D, Leeman KT, Kim CF, Wallace EM, Lim R. Human amnion cells reverse acute and chronic pulmonary damage in experimental neonatal lung injury. Stem Cell Res Ther 2017; 8:257. [PMID: 29126435 PMCID: PMC5681809 DOI: 10.1186/s13287-017-0689-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 08/14/2017] [Accepted: 10/06/2017] [Indexed: 01/10/2023] Open
Abstract
Background Despite advances in neonatal care, bronchopulmonary dysplasia (BPD) remains a significant contributor to infant mortality and morbidity. While human amnion epithelial cells (hAECs) have shown promise in small and large animal models of BPD, there is scarce information on long-term benefit and clinically relevant questions surrounding administration strategy remain unanswered. In assessing the therapeutic potential of hAECs, we investigated the impact of cell dosage, administration routes and timing of treatment in a pre-clinical model of BPD. Methods Lipopolysaccharide was introduced intra-amniotically at day 16 of pregnancy prior to exposure to 65% oxygen (hyperoxia) at birth. hAECs were administered either 12 hours (early) or 4 days (late) after hyperoxia commenced. Collective lung tissues were subjected to histological analysis, multikine ELISA for inflammatory cytokines, FACS for immune cell populations and 3D lung stem cell culture at neonatal stage (postnatal day 7 and 14). Invasive lung function test and echocardiography were applied at 6 and 10 weeks of age. Results hAECs improved the tissue-to-airspace ratio and septal crest density in a dose-dependent manner, regardless of administration route. Early administration of hAECs, coinciding with the commencement of postnatal hyperoxia, was associated with reduced macrophages, dendritic cells and natural killer cells. This was not the case if hAECs were administered when lung injury was established. Fittingly, early hAEC treatment was more efficacious in reducing interleukin-1β, tumour necrosis factor alpha and monocyte chemoattractant protein-1 levels. Early hAEC treatment was also associated with reduced airway hyper-responsiveness and normalisation of pressure–volume loops. Pulmonary hypertension and right ventricle hypertrophy were also prevented in the early hAEC treatment group, and this persisted until 10 weeks of age. Conclusions Early hAEC treatment appears to be advantageous over late treatment. There was no difference in efficacy between intravenous and intratracheal administration. The benefits of hAEC administration resulted in long-term improvements in cardiorespiratory function. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0689-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dandan Zhu
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Jean Tan
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Amina S Maleken
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Ruth Muljadi
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Siow T Chan
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Sin N Lau
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Kirstin Elgass
- Monash Micro Imaging, Monash University, Clayton, Victoria, Australia
| | - Bryan Leaw
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Joanne Mockler
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Daniel Chambers
- Queensland Lung Transplant Service, The Prince Charles Hospital, Brisbane, QLD, Australia.,School of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Kristen T Leeman
- Division of Newborn Medicine, Department of Paediatrics, Boston Children's Hospital Boston, Harvard Medical School, Clayton, Victoria, Australia.,Boston Children's Hospital Boston Stem Cell Program, Department of Genetics, Harvard Medical School and Harvard Stem Cell Institute, Clayton, Victoria, Australia
| | - Carla F Kim
- Boston Children's Hospital Boston Stem Cell Program, Department of Genetics, Harvard Medical School and Harvard Stem Cell Institute, Clayton, Victoria, Australia
| | - Euan M Wallace
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia
| | - Rebecca Lim
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia. .,Department of Obstetrics and Gynaecology, Monash University, 27-31 Wright Street, Clayton, VIC, 3800, Australia.
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Jin M, Lee J, Lee KY, Jin Z, Pak JH, Kim HS. Alteration of TGF-β-ALK-Smad signaling in hyperoxia-induced bronchopulmonary dysplasia model of newborn rats. Exp Lung Res 2016; 42:354-364. [PMID: 27618520 DOI: 10.1080/01902148.2016.1226448] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is a main chronic lung disease commonly occurs in preterm infants. BPD is characterized by impaired alveolarization and vascularization of the developing lung. Transforming growth factor-β (TGF-β) signaling pathway is known to play an important role during lung vascular development. In the present study, we examined whether the regulation of TGF-β-ALK-Smad signaling pathway influence on the disruption of pulmonary vascular development in newborn rats as hyperoxia-induced BPD model. MATERIALS AND METHODS Newborn rats were continuously exposed to 21% or 85% O2 for 7 days, and subsequently kept in normoxic condition for another 14 days. Lung tissues harvested at each time point were evaluated for the expression of TGF-β1, ALK1, ALK5, phosphorylated Smad1/5, phosphorylated Smad2/3, VEGF, and endoglin, as accessed by both biochemical and immunohistological analyses. RESULTS Double-fluorescence immunohistochemical staining indicated these molecules were mainly expressed in pulmonary endothelial cells. The expression of TGF-β1 and ALK5 mRNA and protein were significantly increased in D5 hyperoxia group, while that of ALK1 mRNA and protein were significantly decreased. The level of phosphorylated Smad1/5 was significantly decreased in D7 hyperoxia group, whereas that of phosphorylated Smad2/3 was oppositely increased. In addition, the expression of vascular endothelial growth factor (VEGF) mRNA was increased at D1 with subsequent decrease in D7 hyperoxia group. There was no significantly difference in endoglin expression in entire experimental period. CONCLUSION These results indicate that exposure to hyperoxia altered the balance between TGF-β-ALK1-Smad1/5 and TGF-β-ALK5-Smad2/3 pathways in pulmonary endothelial cells, which may ultimately lead to the development of BPD.
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Affiliation(s)
- Meihua Jin
- a Department of Pediatrics , Yanbian University Hospital , Yanji , Jilin Province , China
| | - Juyoung Lee
- b Department of Pediatrics , Inha University College of Medicine , Incheon , Korea
| | - Kyung-Yup Lee
- c Department of Pediatrics , Seoul National University College of Medicine , Seoul , Korea
| | - Zhengyong Jin
- a Department of Pediatrics , Yanbian University Hospital , Yanji , Jilin Province , China
| | - Jhang Ho Pak
- d Asan Institute for Life Sciences, Asan Medical Center, University of Ulsan College of Medicine , Seoul , Korea
| | - Han-Suk Kim
- c Department of Pediatrics , Seoul National University College of Medicine , Seoul , Korea
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Strauss T, Metsuyanim S, Pessach I, Shuchan-Eisen I, Kuint J, Dekel B. Analysis of circulating hem-endothelial marker RNA levels in preterm infants. BMC Pediatr 2009; 9:42. [PMID: 19555479 PMCID: PMC2709108 DOI: 10.1186/1471-2431-9-42] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2009] [Accepted: 06/25/2009] [Indexed: 01/09/2023] Open
Abstract
Background Circulating endothelial cells may serve as novel markers of angiogenesis. These include a subset of hem-endothelial progenitor cells that play a vital role in vascular growth and repair. The presence and clinical implications of circulating RNA levels as an expression for hematopoietic and endothelial-specific markers have not been previously evaluated in preterm infants. This study aims to determine circulating RNA levels of hem-endothelial marker genes in peripheral blood of preterm infants and begin to correlate these findings with prenatal complications. Methods Peripheral blood samples from seventeen preterm neonates were analyzed at three consecutive post-delivery time points (day 3–5, 10–15 and 30). Using quantitative reverse transcription-polymerase chain reaction we studied the expression patterns of previously established hem-endothelial-specific progenitor-associated genes (AC133, Tie-2, Flk-1 (VEGFR2) and Scl/Tal1) in association with characteristics of prematurity and preterm morbidity. Results Circulating Tie-2 and SCL/Tal1 RNA levels displayed an inverse correlation to gestational age (GA). We observed significantly elevated Tie-2 levels in preterm infants born to mothers with amnionitis, and in infants with sustained brain echogenicity on brain sonography. Other markers showed similar expression patterns yet we could not demonstrate statistically significant correlations. Conclusion These preliminary findings suggest that circulating RNA levels especially Tie2 and SCL decline with maturation and might relate to some preterm complication. Further prospective follow up of larger cohorts are required to establish this association.
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Affiliation(s)
- Tzipora Strauss
- Neonatal Department, Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel.
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Pang J, Hoefen R, Pryhuber GS, Wang J, Yin G, White RJ, Xu X, O'Dell MR, Mohan A, Michaloski H, Massett MP, Yan C, Berk BC. G-protein-coupled receptor kinase interacting protein-1 is required for pulmonary vascular development. Circulation 2009; 119:1524-32. [PMID: 19273721 DOI: 10.1161/circulationaha.108.823997] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The G-protein-coupled receptor kinase interacting protein-1 (GIT1) is a multidomain scaffold protein that participates in many cellular functions including receptor internalization, focal adhesion remodeling, and signaling by both G-protein-coupled receptors and tyrosine kinase receptors. However, there have been no in vivo studies of GIT1 function to date. METHODS AND RESULTS To determine essential functions of GIT1 in vivo, we generated a traditional GIT1 knockout mouse. GIT1 knockout mice exhibited approximately 60% perinatal mortality. Pathological examination showed that the major abnormality in GIT1 knockout mice was impaired lung development characterized by markedly reduced numbers of pulmonary blood vessels and increased alveolar spaces. Given that vascular endothelial growth factor (VEGF) is essential for pulmonary vascular development, we investigated the role of GIT1 in VEGF signaling in the lung and cultured endothelial cells. Because activation of phospholipase-Cgamma (PLCgamma) and extracellular signal-regulated kinases 1/2 (ERK1/2) by angiotensin II requires GIT1, we hypothesized that GIT1 mediates VEGF-dependent pulmonary angiogenesis by modulating PLCgamma and ERK1/2 activity in endothelial cells. In cultured endothelial cells, knockdown of GIT1 decreased VEGF-mediated phosphorylation of PLCgamma and ERK1/2. PLCgamma and ERK1/2 activity in lungs from GIT1 knockout mice was reduced postnatally. CONCLUSIONS Our data support a critical role for GIT1 in pulmonary vascular development by regulating VEGF-induced PLCgamma and ERK1/2 activation.
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Affiliation(s)
- Jinjiang Pang
- Aab Cardiovascular Research Institute and the Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA
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Tipple TE, Welty SE, Nelin LD, Hansen JM, Rogers LK. Alterations of the thioredoxin system by hyperoxia: implications for alveolar development. Am J Respir Cell Mol Biol 2009; 41:612-9. [PMID: 19244202 DOI: 10.1165/rcmb.2008-0224oc] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Alterations in vascular endothelial growth factor (VEGF) contribute to alveolar simplification seen in animal models of bronchopulmonary dysplasia, and VEGF expression is redox regulated by thioredoxin (Trx)-1 in other diseases. The present studies tested the hypothesis that exposure to 85% O2 negatively impacts the Trx1 system and VEGF expression in the lungs of newborn mice. There was no effect of fraction of inspired oxygen on lung Trx1 or Trx reductase-1 protein levels; however, lung Trx1 protein was predominantly oxidized in the lungs of newborn mice exposed to 85% O2 by 24 hours of exposure. In room air (RA), lung Trx interacting protein (Txnip) levels decreased developmentally through Day 7 (1.0 +/- 0.06 [Day 1] vs. 0.49 +/- 0.10 [Day 3] vs. 0.29 +/- 0.03 [Day 7]; P < 0.01), whereas VEGF expression increased (1.25 +/- 0.16 [Day 1] vs. 4.35 +/- 1.51 [Day 3] vs. 13.23 +/- 0.37 [Day 7]; P < 0.01). Newborn mice exposed to 85% O2 had no developmental decrease in Txnip protein levels and a delayed increase in VEGF protein levels. Lung Txnip and VEGF protein levels were different than in corresponding RA controls at Day 3, before the detection of lung morphologic abnormalities in our model. Txnip and VEGF protein levels were inversely correlated in both the RA and hyperoxia-exposed groups (n = 18; R = -0.66; P = 0.003). In conclusion, oxidation of Trx1 and sustained Txnip expression in the lungs of newborn mice exposed to 85% oxygen is likely to severely attenuate normal Trx1 function. The inverse correlation of Txnip with VEGF expression suggests that decreased Trx1 function contributes to the observed lung developmental abnormalities.
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Affiliation(s)
- Trent E Tipple
- Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH 43205, USA.
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