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Yang J, Wang Y, Wu Y, Fan H, Jin O, Tang L, Tung TH, Zhang M, Wang L. Association of cord blood Ang-1 and sCD105 levels with bronchopulmonary dysplasia in preterm infants. BMC Pediatr 2024; 24:451. [PMID: 39010003 PMCID: PMC11247901 DOI: 10.1186/s12887-024-04932-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 07/05/2024] [Indexed: 07/17/2024] Open
Abstract
BACKGROUND To investigate the relationship between cord blood levels of Angiopoietin-1 (Ang-1) and S-endoglin (sCD105) and bronchopulmonary dysplasia (BPD) in preterm infants. METHODS Sixty-one preterm infants admitted to the neonatal intensive care unit of the study hospital between July 2021 and September 2022 were included. Cord blood was collected after the birth of premature infants. Ang-1 and sCD105 levels were quantified using the vascular endothelial growth factor enzyme-linked immunosorbent assay. Preterm infants were divided into BPD and non-BPD groups, and differences in Ang-1 and sCD105 levels between the two groups were compared. A binary logistic model was used to assess the association between low and high levels Ang-1 and BPD in preterm infants. RESULTS In the study, there were 20 preterm infants with BPD (32.8%) and 41 preterm infants with non-BPD (67.2%). Ang-1 concentration levels were lower in the BPD group than in the non-BPD group (7105.43 (5617.01-8523.00) pg/ml vs. 10488.03 (7946.19-15962.77) pg/ml, P = 0.027). However, the sCD105 concentration levels were not significantly different between the BPD and non-BPD groups (P = 0.246). A median Ang-1 concentration of 8800.40 pg/ml was calculated. Logistic regression analysis showed that after adjusting for gestational age, birth weight, and maternal prenatal steroid hormone application, the odds ratio (OR) was 8.577 for the risk of BPD in preterm infants with Ang-1 concentrations of ≤ 8800.40 pg/ml compared to those with Ang-1 concentrations of > 8800.40 pg/ml (OR: 8.577, 95% confidence interval: 1.265-58.155, P = 0.028). CONCLUSION Our study indicated that Ang-1 levels in the cord blood of preterm infants may be associated the risk of BPD. In the future, we will continue to conduct study with large samples.
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Affiliation(s)
- Jingyun Yang
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China
| | - Yun Wang
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China
| | - Yixin Wu
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China
| | - Hailing Fan
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China
| | - Ouxuan Jin
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China
| | - Liwei Tang
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China
| | - Tao-Hsin Tung
- Evidence-Based Medicine Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, 150 Ximen Street, Linhai, Zhejiang, 317000, China
| | - Meixian Zhang
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China.
- Evidence-Based Medicine Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, 150 Ximen Street, Linhai, Zhejiang, 317000, China.
| | - Lizhen Wang
- Department of Pediatrics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, 317000, China.
- Department of Pediatrics, Taizhou Enze Medical Center (Group), Enze Hospital, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang, 318050, China.
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Wits M, Becher C, de Man F, Sanchez-Duffhues G, Goumans MJ. Sex-biased TGFβ signalling in pulmonary arterial hypertension. Cardiovasc Res 2023; 119:2262-2277. [PMID: 37595264 PMCID: PMC10597641 DOI: 10.1093/cvr/cvad129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/21/2023] [Accepted: 07/04/2023] [Indexed: 08/20/2023] Open
Abstract
Pulmonary arterial hypertension (PAH) is a rare cardiovascular disorder leading to pulmonary hypertension and, often fatal, right heart failure. Sex differences in PAH are evident, which primarily presents with a female predominance and increased male severity. Disturbed signalling of the transforming growth factor-β (TGFβ) family and gene mutations in the bone morphogenetic protein receptor 2 (BMPR2) are risk factors for PAH development, but how sex-specific cues affect the TGFβ family signalling in PAH remains poorly understood. In this review, we aim to explore the sex bias in PAH by examining sex differences in the TGFβ signalling family through mechanistical and translational evidence. Sex hormones including oestrogens, progestogens, and androgens, can determine the expression of receptors (including BMPR2), ligands, and soluble antagonists within the TGFβ family in a tissue-specific manner. Furthermore, sex-related genetic processes, i.e. Y-chromosome expression and X-chromosome inactivation, can influence the TGFβ signalling family at multiple levels. Given the clinical and mechanistical similarities, we expect that the conclusions arising from this review may apply also to hereditary haemorrhagic telangiectasia (HHT), a rare vascular disorder affecting the TGFβ signalling family pathway. In summary, we anticipate that investigating the TGFβ signalling family in a sex-specific manner will contribute to further understand the underlying processes leading to PAH and likely HHT.
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Affiliation(s)
- Marius Wits
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - Clarissa Becher
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
| | - Frances de Man
- Department of Pulmonary Medicine, Amsterdam University Medical Center (UMC) (Vrije Universiteit), 1081 HV Amsterdam, The Netherlands
| | - Gonzalo Sanchez-Duffhues
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Health Research Institute of Asturias (ISPA), 33011 Oviedo, Spain
| | - Marie-José Goumans
- Department of Cell and Chemical Biology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC Leiden, The Netherlands
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3
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Qu S, Shan L, Chen X, Zhang Z, Wu Y, Chen Y, Zhuo F, Wang Y, Dong H. The role of rhIGF-1/BP3 in the prevention of pulmonary hypertension in bronchopulmonary dysplasia and its underlying mechanism. BMC Pulm Med 2023; 23:209. [PMID: 37322452 DOI: 10.1186/s12890-023-02498-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/26/2023] [Indexed: 06/17/2023] Open
Abstract
BACKGROUND This study aimed to determine whether postnatal treatment with recombinant human IGF-1 (rhIGF-1)/binding peptide 3 (BP3) ameliorates lung injury and prevents pulmonary hypertension (PH) in bronchopulmonary dysplasia (BPD) models. METHODS We used two models of BPD in this study: one model that was associated with chorioamnionitis (CA), stimulated by intra-amniotic fluid and exposure to lipopolysaccharide (LPS), whereas the other was exposed to postnatal hyperoxia. Newborn rats were treated with rhIGF-1/BP3 (0.2 mg/Kg/d) or saline via intraperitoneal injection. The study endpoints included the wet/dry weight (W/D) ratio of lung tissues, radial alveolar counts (RACs), vessel density, right ventricular hypertrophy (RVH), lung resistance, and lung compliance. Hematoxylin and eosin (H&E) and Masson staining were used to evaluate the degree of lung injury and pulmonary fibrosis. IGF-1 and eNOS expression were detected using western blotting or quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). The levels of SP-C, E-cadherin, N-cadherin, FSP1, and Vimentin in the lung tissues were detected by immunofluorescence. RESULTS LPS and hyperoxia treatment increased lung injury and pulmonary fibrosis, enhanced RVH and total respiratory resistance, and decreased RAC, pulmonary vascular density and pulmonary compliance in young mice (all p < 0.01). Simultaneously, LPS and hyperoxia induced an increase in epithelial-mesenchymal transition (EMT) in airway epithelial cells. However, rhIGF-1/BP3 treatment reduced lung injury and pulmonary fibrosis, decreased RVH and total respiratory resistance, and enhanced RAC, pulmonary vascular density and pulmonary compliance, as well as inhibited EMT in airway epithelial cells in LPS and hyperoxia treated mice. CONCLUSION Postnatal rhIGF-1/BP3 treatment relieved the effects of LPS or hyperoxia on lung injury and prevented RVH, providing a promising strategy for the treatment of BPD.
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Affiliation(s)
- Sehua Qu
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Lianqiang Shan
- Department of Radiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Xin Chen
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Zhen Zhang
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Yumeng Wu
- Department of Pediatrics, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Yun Chen
- Department of Pediatrics, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Feixiang Zhuo
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China
| | - Yitong Wang
- Bengbu Medical College, Bengbu, 233000, China
| | - Huaifu Dong
- Department of Neonatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, 233000, China.
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4
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Han W, Zhang F, Mo D, Zhang X, Chen B, Ding X, Guo H, Li F, Guo C. Involvement of HIF1 stabilization and VEGF signaling modulated by Grx-1 in murine model of bronchopulmonary dysplasia. Cell Biol Int 2023; 47:796-807. [PMID: 36640422 DOI: 10.1002/cbin.11985] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 12/23/2022] [Accepted: 01/02/2023] [Indexed: 01/15/2023]
Abstract
Hypoxia inducible factor (HIF)-1α could be stabilized by Grx1 deletion, which is implicated critical in the pathogenesis of bronchopulmonary dysplasia (BPD). Until now, the stabilization of HIF-1α by glutathionylation to regulate the pulmonary microcirculation in BPD is not well addressed. In this study, we investigated whether the HIF-1α stabilization modulated by Grx1 ablation could ameliorate the pathological changes in the mouse model of BPD, including angiogenesis and alveolar formation. We found that depletion of Grx1 increased levels of GSH-protein adducts, which was associated with the improvement in the numbers of alveoli, the capillary density in the pulmonary microcirculation and the survival rate in the littermates with hyperoxic exposure. Grx1 ablation could promote HIF-1α glutathionylation by increasing GSH adducts to stabilize HIF-1α and to induce VEGF-A production in the lung tissue. The above phenotype of capillary density and VEGF-A production was removed by the pharmacological administration of YC-1, the HIF-1α inhibitor, suggesting the HIF-1α dependent manner for pulmonary microcirculatory perfusion. These data indicate that HIF-1α stabilization plays an critical role in modification pulmonary microcirculatory perfusion, which is associated with the pathological damage under hyperoxic conditions, suggesting that targeting with HIF-1α stabilization should be a potential clinical and therapeutic strategy for BPD treatment.
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Affiliation(s)
- Wenli Han
- School of Pharmacy, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Pediatrics, Chongqing Health Center for Women and Children, Chongqing, China.,Department of Animal Center, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Fengmei Zhang
- School of Pharmacy, Chongqing Medical University, Chongqing, People's Republic of China.,Department of Animal Center, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Dandan Mo
- Department of Pediatrics, Chongqing Health Center for Women and Children, Chongqing, China.,Department of Animal Center, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xiao Zhang
- Department of Animal Center, Children's Hospital of Chongqing Medical University, Chongqing, China.,Department of Burn, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Bailin Chen
- Department of General Surgery, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xionghui Ding
- Department of Burn, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Hongjie Guo
- Department of Animal Center, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Fang Li
- Department of Pediatrics, Chongqing Health Center for Women and Children, Chongqing, China.,Department of Pediatrics, Women and Chidren's Hospital, Chongqing Medical University, Chongqing, China
| | - Chunbao Guo
- Department of Pediatrics, Chongqing Health Center for Women and Children, Chongqing, China.,Department of Pediatrics, Women and Chidren's Hospital, Chongqing Medical University, Chongqing, China
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5
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Wang Y, Wang X, Xu Q, Yin J, Wang H, Zhang L. CircRNA, lncRNA, and mRNA profiles of umbilical cord blood exosomes from preterm newborns showing bronchopulmonary dysplasia. Eur J Pediatr 2022; 181:3345-3365. [PMID: 35790551 PMCID: PMC9395505 DOI: 10.1007/s00431-022-04544-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 06/14/2022] [Accepted: 06/23/2022] [Indexed: 02/07/2023]
Abstract
Bronchopulmonary dysplasia (BPD) represents a multifactorial chronic pulmonary pathology and a major factor causing premature illness and death. The therapeutic role of exosomes in BPD has been feverishly investigated. Meanwhile, the potential roles of exosomal circRNAs, lncRNAs, and mRNAs in umbilical cord blood (UCB) serum have not been studied. This study aimed to detect the expression profiles of circRNAs, lncRNAs, and mRNAs in UCB-derived exosomes of infants with BPD. Microarray analysis was performed to compare the RNA profiles of UCB-derived exosomes of a preterm newborn with (BPD group) and without (non-BPD, NBPD group) BPD. Then, circRNA/lncRNA-miRNA-mRNA co-expression networks were built to determine their association with BPD. In addition, cell counting kit-8 (CCK-8) assay was used to evaluate the proliferation of lipopolysaccharide (LPS)-induced human bronchial epithelial cells (BEAS-2B cells) and human umbilical vein endothelial cells (HUVECs). The levels of tumor necrosis factor (TNF)-α and interleukin (IL)-1β in LPS-induced BEAS-2B cells and HUVECs were assessed through Western blot analysis. Then, quantitative reverse transcription-polymerase chain reaction assay was used to evaluate the expression levels of four differentially expressed circRNAs (hsa_circ_0086913, hsa_circ_0049170, hsa_circ_0087059, and hsa_circ_0065188) and two lncRNAs (small nucleolar RNA host gene 20 (SNHG20) and LINC00582) detected in LPS-induced BEAS-2B cells or HUVECs. A total of 317 circRNAs, 104 lncRNAs, and 135 mRNAs showed significant differential expression in UCB-derived exosomes of preterm infants with BPD compared with those with NBPD. Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were conducted to examine differentially expressed exosomal circRNAs, lncRNAs, and mRNAs. The results showed that the GO terms and KEGG pathways mostly involving differentially expressed exosomal RNAs were closely associated with endothelial or epithelial cell development. In vitro, CCK-8 and Western blot assays revealed that LPS remarkably inhibited the viability and promoted inflammatory responses (TNF-α and IL-1β) of BEAS-2B cells or HUVECs. The expression levels of circRNAs hsa_circ_0049170 and hsa_circ_0087059 were upregulated in LPS-induced BEAS-2B cells; the expression level of hsa_circ_0086913 was upregulated and that of hsa_circ_0065188 was downregulated in LPS-induced HUVECs. Moreover, the expression level of lncRNA SNHG20 was upregulated and that of LINC00582 was downregulated in LPS-induced BEAS-2B cells. Further, 455 circRNA/lncRNA-miRNA-mRNA interaction networks were predicted, including hsa_circ_0086913/hsa-miR-103a-3p/transmembrane 4 L six family member 1 (TM4SF1) and lncRNA-SNHG20/hsa-miR-6720-5p/spermine synthase (SMS) networks, which may take part in BPD. CONCLUSION This study provided a systematic perspective on UCB-derived exosomal circRNAs and lncRNAs and laid an important foundation for further investigating the potential biological functions of exosomal circRNAs and lncRNAs in BPD. WHAT IS KNOWN • BPD represents a multifactorial chronic pulmonary pathology and a major factor causing premature illness and death. • The therapeutic role of exosomes in BPD has been feverishly investigated, and exosomal RNAs were ignored. WHAT IS NEW • The profiles of UCB-derived exosomal circRNAs, lncRNAs, and mRNAs were performed. • Several differentially expressed circRNAs and lncRNAs were identified in LPS-induced BEAS-2B cells and HUVECs.
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Affiliation(s)
- Yu Wang
- Department of Neonatology, Changzhou Maternal and Child Health Care Hospital, Changzhou, China
| | - Xuan Wang
- Department of Neonatology, Changzhou Maternal and Child Health Care Hospital, Changzhou, China
| | - Qiushi Xu
- Department of Neonatology, Changzhou Maternal and Child Health Care Hospital, Changzhou, China
| | - Jiao Yin
- Department of Neonatology, Changzhou Maternal and Child Health Care Hospital, Changzhou, China
| | - Huaiyan Wang
- Department of Neonatology, Changzhou Maternal and Child Health Care Hospital, Changzhou, China
| | - Lin Zhang
- Department of Neonatology, Changzhou Maternal and Child Health Care Hospital, Changzhou, China
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6
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Wang X, Feng J, Dai H, Mo J, Luo B, Luo C, Zhang W, Pan L. microRNA-130b-3p delivery by mesenchymal stem cells-derived exosomes confers protection on acute lung injury. Autoimmunity 2022; 55:597-607. [PMID: 36018063 DOI: 10.1080/08916934.2022.2094370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
OBJECTIVE Researchers have investigated miR-130b-3p in lung disease pathology, such as lung fibrosis. The present study was performed to elucidate the miR-130b-3p-involved mechanism in acute lung injury (ALI) through delivery by mesenchymal stem cells-derived exosomes (MSCs-Exo). METHODS ALI mouse models were induced via intratracheal administration of lipopolysaccharide (LPS) and treated with MSCs-Exo. Lung dry-wet (W/D) ratio, inflammatory factors in the bronchoalveolar lavage fluid, pathological damage and apoptosis in the lung tissues were analyzed. Expression levels of miR-130b-3p and TGFBR1 were measured in the mouse lung tissues, and the interaction between miR-130b-3p and TGFBR1 was studied. RESULTS MSCs-Exo relieved LPS-induced ALI in mice by reducing lung W/D ratio and inflammatory response, and attenuating lung tissue pathological damage and reducing the alveolar cell apoptosis. miR-130b-3p delivery by MSCs-Exo reduced LPS-induced ALI in mice. TGFBR1 was determined to be a downstream target gene of miR-130b-3p. Inhibition of TGFBR1 could remit LPS-induced ALI in mice. The protection mediated by MSCs-Exo carrying miR-130b-3p could be rescued by elevating TGFBR1 expression. CONCLUSION miR-130b-3p delivery by MSCs-Exo confers protection on ALI in mice via the downregulation of TGFBR1.
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Affiliation(s)
- Xiaoxia Wang
- Key Laboratory for Basic Science and Prevention of Perioperative Organ Disfunction Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, The Maternal and & Child Health Hospital, The Children's Hospital, The Obstetrics & Gynecology Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Jifeng Feng
- Department of Anesthesiology, The Maternal and & Child Health Hospital, The Children's Hospital, The Obstetrics & Gynecology Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Huijun Dai
- Key Laboratory for Basic Science and Prevention of Perioperative Organ Disfunction Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, The Maternal and & Child Health Hospital, The Children's Hospital, The Obstetrics & Gynecology Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Jianla Mo
- Key Laboratory for Basic Science and Prevention of Perioperative Organ Disfunction Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, The Maternal and & Child Health Hospital, The Children's Hospital, The Obstetrics & Gynecology Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Bijun Luo
- Key Laboratory for Basic Science and Prevention of Perioperative Organ Disfunction Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, The Maternal and & Child Health Hospital, The Children's Hospital, The Obstetrics & Gynecology Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Cheng Luo
- Key Laboratory for Basic Science and Prevention of Perioperative Organ Disfunction Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China
| | - Weikang Zhang
- The Affiliated Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Oncology and Basic Medicine, Chinese Academy of Sciences, Hangzhou City, Zhejiang Province, China
| | - Linghui Pan
- Key Laboratory for Basic Science and Prevention of Perioperative Organ Disfunction Guangxi Medical University Cancer Hospital, Nanning, Guangxi, China.,The Laboratory of Perioperative Medicine Research Center, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China.,Department of Anesthesiology, Guangxi Medical University Affiliated Tumor Hospital & Oncology Medical College, Nanning, Guangxi, China
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7
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Perinatal Hyperoxia and Developmental Consequences on the Lung-Brain Axis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5784146. [PMID: 35251477 PMCID: PMC8894035 DOI: 10.1155/2022/5784146] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/04/2022] [Indexed: 12/12/2022]
Abstract
Approximately 11.1% of all newborns worldwide are born preterm. Improved neonatal intensive care significantly increased survival rates over the last decades but failed to reduce the risk for the development of chronic lung disease (i.e., bronchopulmonary dysplasia (BPD)) and impaired neurodevelopment (i.e., encephalopathy of prematurity (EoP)), two major long-term sequelae of prematurity. Premature infants are exposed to relative hyperoxia, when compared to physiological in-utero conditions and, if needed to additional therapeutic oxygen supplementation. Both are associated with an increased risk for impaired organ development. Since the detrimental effects of hyperoxia on the immature retina are known for many years, lung and brain have come into focus in the last decade. Hyperoxia-induced excessive production of reactive oxygen species leading to oxidative stress and inflammation contribute to pulmonary growth restriction and abnormal neurodevelopment, including myelination deficits. Despite a large body of studies, which unraveled important pathophysiological mechanisms for both organs at risk, the majority focused exclusively either on lung or on brain injury. However, considering that preterm infants suffering from BPD are at higher risk for poor neurodevelopmental outcome, an interaction between both organs seems plausible. This review summarizes recent findings regarding mechanisms of hyperoxia-induced neonatal lung and brain injury. We will discuss common pathophysiological pathways, which potentially link both injured organ systems. Furthermore, promises and needs of currently suggested therapies, including pharmacological and regenerative cell-based treatments for BPD and EoP, will be emphasized. Limited therapeutic approaches highlight the urgent need for a better understanding of the mechanisms underlying detrimental effects of hyperoxia on the lung-brain axis in order to pave the way for the development of novel multimodal therapies, ideally targeting both severe preterm birth-associated complications.
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8
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Pawlak JB, Blobe GC. TGF-β superfamily co-receptors in cancer. Dev Dyn 2022; 251:137-163. [PMID: 33797167 PMCID: PMC8484463 DOI: 10.1002/dvdy.338] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/17/2021] [Accepted: 03/22/2021] [Indexed: 01/03/2023] Open
Abstract
Transforming growth factor-β (TGF-β) superfamily signaling via their cognate receptors is frequently modified by TGF-β superfamily co-receptors. Signaling through SMAD-mediated pathways may be enhanced or depressed depending on the specific co-receptor and cell context. This dynamic effect on signaling is further modified by the release of many of the co-receptors from the membrane to generate soluble forms that are often antagonistic to the membrane-bound receptors. The co-receptors discussed here include TβRIII (betaglycan), endoglin, BAMBI, CD109, SCUBE proteins, neuropilins, Cripto-1, MuSK, and RGMs. Dysregulation of these co-receptors can lead to altered TGF-β superfamily signaling that contributes to the pathophysiology of many cancers through regulation of growth, metastatic potential, and the tumor microenvironment. Here we describe the role of several TGF-β superfamily co-receptors on TGF-β superfamily signaling and the impact on cellular and physiological functions with a particular focus on cancer, including a discussion on recent pharmacological advances and potential clinical applications targeting these co-receptors.
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Affiliation(s)
| | - Gerard C. Blobe
- Department of Medicine, Duke University Medical Center,Department of Pharmacology and Cancer Biology, Duke University Medical Center,Corresponding author: Gerard Blobe, B354 LSRC, Box 91004 DUMC, Durham, NC 27708, , 919-668-1352
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9
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Appuhn SV, Siebert S, Myti D, Wrede C, Surate Solaligue DE, Pérez-Bravo D, Brandenberger C, Schipke J, Morty RE, Grothausmann R, Mühlfeld C. Capillary Changes Precede Disordered Alveolarization in a Mouse Model of Bronchopulmonary Dysplasia. Am J Respir Cell Mol Biol 2021; 65:81-91. [PMID: 33784484 DOI: 10.1165/rcmb.2021-0004oc] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD), the most common sequela of preterm birth, is a severe disorder of the lung that is often associated with long-lasting morbidity. A hallmark of BPD is the disruption of alveolarization, whose pathogenesis is incompletely understood. Here, we tested the vascular hypothesis that disordered vascular development precedes the decreased alveolarization associated with BPD. Neonatal mouse pups were exposed to 7, 14, or 21 days of normoxia (21% O2) or hyperoxia (85% O2) with n = 8-11 for each group. The right lungs were fixed by vascular perfusion and investigated by design-based stereology or three-dimensional reconstruction of data sets obtained by serial block-face scanning EM. The alveolar capillary network of hyperoxia-exposed mice was characterized by rarefaction, partially altered geometry, and widening of capillary segments as shown by three-dimensional reconstruction. Stereology revealed that the development of alveolar epithelium and capillary endothelium was decreased in hyperoxia-exposed mice; however, the time course of these effects was different. That the surface area of the alveolar epithelium was smaller in hyperoxia-exposed mice first became evident at Day 14. In contrast, the surface area of the endothelium was reduced in hyperoxia-exposed mouse pups at Day 7. The thickness of the air-blood barrier decreased during postnatal development in normoxic mice, whereas it increased in hyperoxic mice. The endothelium and the septal connective tissue made appreciable contributions to the thickened septa. In conclusion, the present study provides clear support for the idea that the stunted alveolarization follows the disordered microvascular development, thus supporting the vascular hypothesis of BPD.
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Affiliation(s)
- Svenja V Appuhn
- Institute of Functional and Applied Anatomy and.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Sara Siebert
- Institute of Functional and Applied Anatomy and.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Despoina Myti
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Member of the German Center for Lung Research (DZL), University of Giessen and Marburg Lung Center, Giessen, Germany; and
| | - Christoph Wrede
- Institute of Functional and Applied Anatomy and.,Research Core Unit Electron Microscopy, Hannover Medical School, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Member of the German Center for Lung Research (DZL), University of Giessen and Marburg Lung Center, Giessen, Germany; and
| | - David Pérez-Bravo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Member of the German Center for Lung Research (DZL), University of Giessen and Marburg Lung Center, Giessen, Germany; and
| | - Christina Brandenberger
- Institute of Functional and Applied Anatomy and.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Julia Schipke
- Institute of Functional and Applied Anatomy and.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Member of the German Center for Lung Research (DZL), University of Giessen and Marburg Lung Center, Giessen, Germany; and
| | - Roman Grothausmann
- Institute of Functional and Applied Anatomy and.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung Research (DZL), Hannover, Germany.,Faculty of Engineering and Health, HAWK University of Applied Sciences and Arts, Göttingen, Germany
| | - Christian Mühlfeld
- Institute of Functional and Applied Anatomy and.,Research Core Unit Electron Microscopy, Hannover Medical School, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover, Member of the German Center for Lung Research (DZL), Hannover, Germany
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10
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Amarelle L, Quintela L, Hurtado J, Malacrida L. Hyperoxia and Lungs: What We Have Learned From Animal Models. Front Med (Lausanne) 2021; 8:606678. [PMID: 33768102 PMCID: PMC7985075 DOI: 10.3389/fmed.2021.606678] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 02/15/2021] [Indexed: 12/19/2022] Open
Abstract
Although oxygen (O2) is essential for aerobic life, it can also be an important source of cellular damage. Supra-physiological levels of O2 determine toxicity due to exacerbated reactive oxygen species (ROS) production, impairing the homeostatic balance of several cellular processes. Furthermore, injured cells activate inflammation cascades, amplifying the tissue damage. The lung is the first (but not the only) organ affected by this condition. Critically ill patients are often exposed to several insults, such as mechanical ventilation, infections, hypo-perfusion, systemic inflammation, and drug toxicity. In this scenario, it is not easy to dissect the effect of oxygen toxicity. Translational investigations with animal models are essential to explore injuring stimuli in controlled experimental conditions, and are milestones in understanding pathological mechanisms and developing therapeutic strategies. Animal models can resemble what happens in critical care or anesthesia patients under mechanical ventilation and hyperoxia, but are also critical to explore the effect of O2 on lung development and the role of hyperoxic damage on bronchopulmonary dysplasia. Here, we set out to review the hyperoxia effects on lung pathology, contributing to the field by describing and analyzing animal experimentation's main aspects and its implications on human lung diseases.
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Affiliation(s)
- Luciano Amarelle
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Lucía Quintela
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Javier Hurtado
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Leonel Malacrida
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay.,Advanced Bioimaging Unit, Institut Pasteur Montevideo and Universidad de la República, Montevideo, Uruguay
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11
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Bakker W, Dingenouts CKE, Lodder K, Wiesmeijer KC, de Jong A, Kurakula K, Mager HJJ, Smits AM, de Vries MR, Quax PHA, Goumans MJTH. BMP Receptor Inhibition Enhances Tissue Repair in Endoglin Heterozygous Mice. Int J Mol Sci 2021; 22:2010. [PMID: 33670533 PMCID: PMC7922601 DOI: 10.3390/ijms22042010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/02/2021] [Accepted: 02/08/2021] [Indexed: 12/12/2022] Open
Abstract
Hereditary hemorrhagic telangiectasia type 1 (HHT1) is a severe vascular disorder caused by mutations in the TGFβ/BMP co-receptor endoglin. Endoglin haploinsufficiency results in vascular malformations and impaired neoangiogenesis. Furthermore, HHT1 patients display an impaired immune response. To date it is not fully understood how endoglin haploinsufficient immune cells contribute to HHT1 pathology. Therefore, we investigated the immune response during tissue repair in Eng+/- mice, a model for HHT1. Eng+/- mice exhibited prolonged infiltration of macrophages after experimentally induced myocardial infarction. Moreover, there was an increased number of inflammatory M1-like macrophages (Ly6Chigh/CD206-) at the expense of reparative M2-like macrophages (Ly6Clow/CD206+). Interestingly, HHT1 patients also showed an increased number of inflammatory macrophages. In vitro analysis revealed that TGFβ-induced differentiation of Eng+/- monocytes into M2-like macrophages was blunted. Inhibiting BMP signaling by treating monocytes with LDN-193189 normalized their differentiation. Finally, LDN treatment improved heart function after MI and enhanced vascularization in both wild type and Eng+/- mice. The beneficial effect of LDN was also observed in the hind limb ischemia model. While blood flow recovery was hampered in vehicle-treated animals, LDN treatment improved tissue perfusion recovery in Eng+/- mice. In conclusion, BMPR kinase inhibition restored HHT1 macrophage imbalance in vitro and improved tissue repair after ischemic injury in Eng+/- mice.
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Affiliation(s)
- Wineke Bakker
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (W.B.); (C.K.E.D.); (K.L.); (K.C.W.); (K.K.); (A.M.S.)
| | - Calinda K. E. Dingenouts
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (W.B.); (C.K.E.D.); (K.L.); (K.C.W.); (K.K.); (A.M.S.)
| | - Kirsten Lodder
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (W.B.); (C.K.E.D.); (K.L.); (K.C.W.); (K.K.); (A.M.S.)
| | - Karien C. Wiesmeijer
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (W.B.); (C.K.E.D.); (K.L.); (K.C.W.); (K.K.); (A.M.S.)
| | - Alwin de Jong
- Department of Surgery, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (A.d.J.); (M.R.d.V.); (P.H.A.Q.)
| | - Kondababu Kurakula
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (W.B.); (C.K.E.D.); (K.L.); (K.C.W.); (K.K.); (A.M.S.)
| | | | - Anke M. Smits
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (W.B.); (C.K.E.D.); (K.L.); (K.C.W.); (K.K.); (A.M.S.)
| | - Margreet R. de Vries
- Department of Surgery, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (A.d.J.); (M.R.d.V.); (P.H.A.Q.)
| | - Paul H. A. Quax
- Department of Surgery, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (A.d.J.); (M.R.d.V.); (P.H.A.Q.)
| | - Marie José T. H. Goumans
- Department of Cell and Chemical Biology, Leiden University Medical Center, 2333 ZC Leiden, The Netherlands; (W.B.); (C.K.E.D.); (K.L.); (K.C.W.); (K.K.); (A.M.S.)
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12
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Di Matteo A, Belloni E, Pradella D, Cappelletto A, Volf N, Zacchigna S, Ghigna C. Alternative splicing in endothelial cells: novel therapeutic opportunities in cancer angiogenesis. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:275. [PMID: 33287867 PMCID: PMC7720527 DOI: 10.1186/s13046-020-01753-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 10/26/2020] [Indexed: 02/07/2023]
Abstract
Alternative splicing (AS) is a pervasive molecular process generating multiple protein isoforms, from a single gene. It plays fundamental roles during development, differentiation and maintenance of tissue homeostasis, while aberrant AS is considered a hallmark of multiple diseases, including cancer. Cancer-restricted AS isoforms represent either predictive biomarkers for diagnosis/prognosis or targets for anti-cancer therapies. Here, we discuss the contribution of AS regulation in cancer angiogenesis, a complex process supporting disease development and progression. We consider AS programs acting in a specific and non-redundant manner to influence morphological and functional changes involved in cancer angiogenesis. In particular, we describe relevant AS variants or splicing regulators controlling either secreted or membrane-bound angiogenic factors, which may represent attractive targets for therapeutic interventions in human cancer.
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Affiliation(s)
- Anna Di Matteo
- Istituto di Genetica Molecolare, "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, via Abbiategrasso 207, 27100, Pavia, Italy
| | - Elisa Belloni
- Istituto di Genetica Molecolare, "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, via Abbiategrasso 207, 27100, Pavia, Italy
| | - Davide Pradella
- Istituto di Genetica Molecolare, "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, via Abbiategrasso 207, 27100, Pavia, Italy
| | - Ambra Cappelletto
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149, Trieste, Italy
| | - Nina Volf
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149, Trieste, Italy
| | - Serena Zacchigna
- Cardiovascular Biology Laboratory, International Centre for Genetic Engineering and Biotechnology (ICGEB), 34149, Trieste, Italy. .,Department of Medical, Surgical and Health Sciences, University of Trieste, 34149, Trieste, Italy.
| | - Claudia Ghigna
- Istituto di Genetica Molecolare, "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, via Abbiategrasso 207, 27100, Pavia, Italy.
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13
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Gong J, Feng Z, Peterson AL, Carr JF, Vang A, Braza J, Choudhary G, Dennery PA, Yao H. Endothelial to mesenchymal transition during neonatal hyperoxia-induced pulmonary hypertension. J Pathol 2020; 252:411-422. [PMID: 32815166 DOI: 10.1002/path.5534] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/04/2020] [Accepted: 08/11/2020] [Indexed: 12/19/2022]
Abstract
Bronchopulmonary dysplasia (BPD), a chronic lung disease in premature infants, results from mechanical ventilation and hyperoxia, amongst other factors. Although most BPD survivors can be weaned from supplemental oxygen, many show evidence of cardiovascular sequelae in adulthood, including pulmonary hypertension and pulmonary vascular remodeling. Endothelial-mesenchymal transition (EndoMT) plays an important role in mediating vascular remodeling in idiopathic pulmonary arterial hypertension. Whether hyperoxic exposure, a known mediator of BPD in rodent models, causes EndoMT resulting in vascular remodeling and pulmonary hypertension remains unclear. We hypothesized that neonatal hyperoxic exposure causes EndoMT, leading to the development of pulmonary hypertension in adulthood. To test this hypothesis, newborn mice were exposed to hyperoxia and then allowed to recover in room air until adulthood. Neonatal hyperoxic exposure gradually caused pulmonary vascular and right ventricle remodeling as well as pulmonary hypertension. Male mice were more susceptible to developing pulmonary hypertension compared to female mice, when exposed to hyperoxia as newborns. Hyperoxic exposure induced EndoMT in mouse lungs as well as in cultured lung microvascular endothelial cells (LMVECs) isolated from neonatal mice and human fetal donors. This was augmented in cultured LMVECs from male donors compared to those from female donors. Using primary mouse LMVECs, hyperoxic exposure increased phosphorylation of both Smad2 and Smad3, but reduced Smad7 protein levels. Treatment with a selective TGF-β inhibitor SB431542 blocked hyperoxia-induced EndoMT in vitro. Altogether, we show that neonatal hyperoxic exposure caused vascular remodeling and pulmonary hypertension in adulthood. This was associated with increased EndoMT. These novel observations provide mechanisms underlying hyperoxia-induced vascular remodeling and potential approaches to prevent BPD-associated pulmonary hypertension by targeting EndoMT. © 2020 The Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Jiannan Gong
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA.,Department of Respiratory and Critical Care Medicine, Second Hospital of Shanxi Medical University, Shanxi Medical University, Taiyuan, PR China
| | - Zihang Feng
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA
| | - Abigail L Peterson
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA
| | - Jennifer F Carr
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA
| | - Alexander Vang
- Vascular Research Laboratory, Providence VA Medical Center, Providence, RI, USA
| | - Julie Braza
- Vascular Research Laboratory, Providence VA Medical Center, Providence, RI, USA
| | - Gaurav Choudhary
- Vascular Research Laboratory, Providence VA Medical Center, Providence, RI, USA.,Department of Medicine, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Phyllis A Dennery
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA.,Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Hongwei Yao
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, USA
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14
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Paturi B, Ryan RM, Nielsen L, Wang H, Kumar VHS. Effects of antioxidant MnTBAP on angiogenesis in newborn mice with hyperoxic lung injury. J Neonatal Perinatal Med 2020; 14:53-60. [PMID: 32804105 DOI: 10.3233/npm-200483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Oxygen toxicity mediated by reactive oxygen species (ROS) plays an essential role in the development of bronchopulmonary dysplasia in premature infants. By reducing oxidative stress, antioxidants protect the immature lung. We studied the effects of MnTBAP, a catalytic antioxidant on angiogenesis and alveolar growth following neonatal hyperoxia. METHODS Newborn mouse litters randomized to room air (RA) or >95% O2 for 72 hours from day 4 (D4) to D7 to receive either MnTBAP (10 mg/kg/d) or saline intraperitoneally (every 24 h for three doses). Lungs harvested for angiogenic gene expression, protein expression, and histopathology post-hyperoxia exposure. Radial alveolar count (RAC), mean linear intercept (MLI) and vessel density assessed by histopathology. RESULTS Angiogenic gene expression was significantly lower in the hyperoxia group compared to the RA group. The protein expression for VEGF and its receptor, VEGFR1, was significantly lower following treatment with MnTBAP compared to hyperoxia alone. Expression of VEGFR2, Angiopoietin-1 and TIE2, were substantially higher in the RA groups compared to hyperoxia groups with or without MnTBAP. Hyperoxia groups demonstrated alveolar simplification. MnTBAP reduced vessel density and failed to improve alveolar growth following hyperoxia. CONCLUSIONS MnTBAP, a catalytic antioxidant, does not offer protection from hyperoxia-induced alveolar impairment. The lack of angiogenic upregulation by MnTBAP may contribute to alveolar simplification in newborn mice.
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Affiliation(s)
- B Paturi
- Department of Pediatrics, University at Buffalo, Buffalo, NY, USA
| | - R M Ryan
- Department of Pediatrics, Case Western Reserve University, Cleveland, OH, USA
| | - L Nielsen
- Department of Pediatrics, University at Buffalo, Buffalo, NY, USA
| | - H Wang
- Department of Pediatrics, University at Buffalo, Buffalo, NY, USA
| | - V H S Kumar
- Department of Pediatrics, University at Buffalo, Buffalo, NY, USA
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