1
|
Mechanistic Interrogation of Cell Transformation In Vitro: The Transformics Assay as an Exemplar of Oncotransformation. Int J Mol Sci 2022; 23:ijms23147603. [PMID: 35886950 PMCID: PMC9321586 DOI: 10.3390/ijms23147603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/21/2022] [Accepted: 07/03/2022] [Indexed: 12/19/2022] Open
Abstract
The Transformics Assay is an in vitro test which combines the BALB/c 3T3 Cell Transformation Assay (CTA) with microarray transcriptomics. It has been shown to improve upon the mechanistic understanding of the CTA, helping to identify mechanisms of action leading to chemical-induced transformation thanks to RNA extractions in specific time points along the process of in vitro transformation. In this study, the lowest transforming concentration of the carcinogenic benzo(a)pyrene (B(a)P) has been tested in order to find molecular signatures of initial events relevant for oncotransformation. Application of Enrichment Analysis (Metacore) to the analyses of the results facilitated key biological interpretations. After 72 h of exposure, as a consequence of the molecular initiating event of aryl hydrocarbon receptor (AhR) activation, there is a cascade of cellular events and microenvironment modification, and the immune and inflammatory responses are the main processes involved in cell response. Furthermore, pathways and processes related to cell cycle regulation, cytoskeletal adhesion and remodeling processes, cell differentiation and transformation were observed.
Collapse
|
2
|
Therapeutic Potential of Ajwa Dates (Phoenix dactylifera) Extract in Prevention of Benzo(a)pyrene-Induced Lung Injury through the Modulation of Oxidative Stress, Inflammation, and Cell Signalling Molecules. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12136784] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chronic respiratory diseases are a leading cause of lung-related death worldwide. The vital factors causing lung pathogenesis include consistent exposure to tobacco smoke, air pollution, and occupational risks. Regarding the significant morbidity and mortality linked to lung pathogenesis, there are neither conclusive treatments nor wholly preventive strategies. In the present study, the protective mechanism of Ajwa date extract (ADE), on Benzopyrene [B(a)P]-induced lung injury in animal models was investigated using antioxidant, lipid peroxidation, anti-inflammatory activities, angiogenesis, histopathological studies, and apoptosis assays. B(a)P treatment significantly decreased the level of antioxidant enzymes such as catalase (Cat) (13.4 vs. 24.7 U/mg protein), Superoxide dismutase (SOD) (38.5 vs. 65.7 U/mg protein), Glutathione peroxidase (GPx) (42.4 vs. 57.3 U/mg protein) and total antioxidant capacity (TAC) (49.8 vs. 98.7 nM) as compared to the treatment group (p < 0.05). B(a)P treatment led to increased expression of pro-inflammatory markers such as TNF-α (88.5 vs. 72.6 pg/mL), IFN-γ (4.86 vs. 3.56 pg/mL), interleukin-6 (IL-6) (109.6 vs. 85.4 pg/mL) and CRP (1.84 vs. 0.94 ng/mL) as compared to the treatment group (p < 0.05). The data shows a significant increase in lipid peroxidation and angiogenesis factors such as vascular endothelial growth factor (VEGF) by B(a)P treatment (p < 0.05). However, ADE treatment showed an improvement of these factors. In addition, ADE treatment significantly ameliorated histopathological changes, collagen fiber deposition, and expression pattern of VEGF and Bax proteins. Furthermore, the flow cytometry data demonstrated that B(a)P intoxication enhanced the apoptosis ratio, which was significantly improved with ADE treatment. Finally, we may infer that Phyto-constituents of ADE have the potential to protect against B(a)P-induced lung pathogenesis. Therefore, Ajwa dates might be used to develop a possible potent alternative therapy for lung pathogenesis.
Collapse
|
3
|
Fan L, Li W, Ma J, Cheng M, Xie L, Ye Z, Xie Y, Wang B, Yu L, Zhou Y, Chen W. Benzo(a)pyrene induces airway epithelial injury through Wnt5a-mediated non-canonical Wnt-YAP/TAZ signaling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 815:151965. [PMID: 34838920 DOI: 10.1016/j.scitotenv.2021.151965] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/10/2021] [Accepted: 11/21/2021] [Indexed: 06/13/2023]
Abstract
Wnt5a is a key mediator of non-canonical Wnt signaling, and an early indicator of epithelial injury and lung dysfunction. Polycyclic aromatic hydrocarbons (PAHs) could induce acute pulmonary pathogenesis, of which the underlying mechanism remains unclear. To elucidate the potential role of Wnt5a-mediated non-canonical Wnt-YAP/TAZ signaling in the lung injury induced by short-term exposure of benzo(a)pyrene (BaP, a representative PAHs), intratracheally instilled mouse model was used and further interfered with its Wnt5a level by small molecule antagonists and agonists. Our data revealed that BaP exposure induced the lung inflammatory response and reduced the expression of Clara cell secretory protein (CC16) in a dose-dependent manner. More importantly, the activation of Wnt5a and downstream YAP/TAZ were accompanied with the enhanced release of epithelial-derived thymic stromal lymphopoietin and interleukin-33, which acted as pro-inflammatory cytokines. Functionally, inhibition of Wnt5a attenuated the BaP-induced inflammation and recuperated CC16 expression, as well as suppressed the epithelial cytokines release. Whereas promoting Wnt5a expression affected the toxic effects of BaP oppositely. Our findings together suggest that Wnt5a is a potential endogenous regulator in lung inflammation and airway epithelial injury, and Wnt5a-YAP/TAZ signaling contributes to lung dysfunction in acute exposure to BaP.
Collapse
Affiliation(s)
- Lieyang Fan
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wei Li
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; School of Public Health, Xuzhou Medical University, Xuzhou 221004, China
| | - Jixuan Ma
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Man Cheng
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Li Xie
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zi Ye
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yujia Xie
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Bin Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Linling Yu
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yun Zhou
- School of Public Health, Guangzhou Medical University, Guangzhou 510120, China.
| | - Weihong Chen
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| |
Collapse
|
4
|
Identification of key biomarkers and immune infiltration in sporadic vestibular schwannoma basing transcriptome-wide profiling. World Neurosurg 2022; 160:e591-e600. [PMID: 35092815 DOI: 10.1016/j.wneu.2022.01.077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 01/19/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND Vestibular schwannoma (VS) is a common intracranial tumor, with 95% of the cases being sporadic vestibular schwannoma (SVS). The purposed of this study was identifying genes responsible for inflammation in SVS and clarifying its underlying immune mechanisms. METHODS Transcriptional sequencing datasets (GSE141801 and GSE108237) from the Gene Expression Omnibus (GEO) database were used in this study. The candidate modules closely related to SVS and hub genes were screened out by weighted gene co-expression network analysis. Τhe sensitivity and specificity of the hub genes for SVS prediction were evaluated by ROC curve analysis. The CIBERSORT algorithm was subsequently applied to analyze the immune infiltration between SVS and controls. Finally, biological signaling pathways involved in the hub genes were identified via gene set enrichment analysis. RESULTS A total of 39 significantly enriched in myelination and collagen-containing extracellular matrix DEGs were identified at the screening step. Three hub genes (MAPK8IP1, SLC36A2, and OR2AT4) were identified, which mainly enriched in pathways of melanogenesis, GnRH, and calcium signaling pathways. Compared with normal nerves, SVS tissue contained a higher proportion of T cells, monocytes and activated dendritic cells, whereas proportions of M2 macrophages were lower. CONCLUSIONS The intergrated analysis revealed the pattern of immune cell infiltration in SVS and provided a crucial molecular foundation to enhance understanding of SVS. Hub genes MAPK8IP1, SLC36A2 and OR2AT4 are potential biomarkers and therapeutic targets to facilitate the accurate diagnosis, prognosis and therapy of SVS.
Collapse
|
5
|
Li X, Li N, Han Y, Rao K, Ji X, Ma M. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)-induced suppression of immunity in THP-1-derived macrophages and the possible mechanisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 287:117302. [PMID: 34020259 DOI: 10.1016/j.envpol.2021.117302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 04/25/2021] [Accepted: 04/30/2021] [Indexed: 06/12/2023]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a well-known immunotoxic environmental pollutant. However, most immunotoxicology studies of TCDD were based on the animal models and the inner mechanisms have just focused on a few genes/proteins. In this study, the immune functions of THP-1-derived macrophages was measured with in-vitro bioassays after 24-h exposure of TCDD including environmentally relevant concentrations. RNA-seq and Weighted Gene Co-expression Network Analysis were used to characterize the immunotoxicity molecular mechanisms. Our study is the first report on the TCDD-induced effects of cell adhesion, morphology, and multiple cytokines/chemokines production on THP-1 macrophages. After TCDD treatment, we observed an inhibited cell adherence, probably attributed to the suppressed mRNA levels of adhesion molecules ICAM-1, VCAM-1 and CD11b, and a decrease in cell pseudopodia and expression of F-actin. The inflammatory cytokines TNF-α, IL-10 and other 8 cytokines/chemokines regulating granulocytes/T cells and angiogenesis were disrupted by TCDD. Alternative splicing event was found to be a sensitive target for TCDD. Using WGCNA, we identified 10 hub genes (TNF, SRC, FGF2, PTGS2, CDH2, GNG11, BDNF, WNT5A, CXCR5 and RUNX2) highly relevant to these observed phenotypes, suggesting AhR less important in the effects TCDD have on THP-1 macrophages than in other cells. Our findings broaden the understanding of TCDD immunotoxicity on macrophages and provide new potential targets for clarifying the molecular mechanisms.
Collapse
Affiliation(s)
- Xinyan Li
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Na Li
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yingnan Han
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Kaifeng Rao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Xiaoya Ji
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mei Ma
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| |
Collapse
|
6
|
Alotaibi AG, Li JV, Gooderham NJ. Tumour necrosis factor-α (TNF-α) enhances dietary carcinogen-induced DNA damage in colorectal cancer epithelial cells through activation of JNK signaling pathway. Toxicology 2021; 457:152806. [PMID: 33961948 PMCID: PMC8211460 DOI: 10.1016/j.tox.2021.152806] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/30/2021] [Accepted: 04/29/2021] [Indexed: 02/07/2023]
Abstract
Colorectal cancer (CRC) is the third most common cancer worldwide and the second leading cause of cancer death. Benzo[a]pyrene (BaP) and 2-amino-1-methyl-6-phenylimidazol [4,5-b] pyridine (PhIP) present in cooked meat are pro-carcinogens and considered to be potential risk factors for CRC. Their carcinogenic and mutagenic effects require metabolic activation primarily by cytochrome P450 1 family enzymes (CYPs); the expression of these enzymes can be modulated by aryl hydrocarbon receptor (AhR) activation and the tumour microenvironment, involving mediators of inflammation. In this study, we hypothesized that tumour necrosis factor-α (TNF-α), a key mediator of inflammation, modulates BaP- and PhIP-induced DNA damage in colon cancer epithelial cells. Importantly, we observed that TNF-α alone (0.1-100 pg/ml) induced DNA damage (micronuclei formation) in HCT-116 cells and co-treatment of TNF-α with BaP or PhIP showed higher levels of DNA damage compared to the individual single treatments. TNF-α alone or in combination with BaP or PhIP did not affect the expression levels of CYP1A1 and CYP1B1 (target genes of AhR signaling pathways). The DNA damage induced by TNF-α was elevated in p53 null HTC-116 cells compared to wild type cells, suggesting that TNF-α-induced DNA damage is suppressed by functional p53. In contrast, p53 status failed to affect BaP and PhIP induced micronucleus frequency. Furthermore, JNK and NF-κB signaling pathway were activated by TNF-α treatment but only inhibition of JNK significantly reduced TNF-α-induced DNA damage. Collectively, these findings suggest that TNF-α induced DNA damage involves JNK signaling pathway rather than AhR and NF-κB pathways in colon cancer epithelial cells.
Collapse
Affiliation(s)
- Aminah G Alotaibi
- Section of Biomolecular Medicine; National Centre for Genomic Technology, King Abdulaziz City for Science and Technology, KACST, Riyadh, Saudi Arabia
| | - Jia V Li
- Section of Nutrition Research, Division of Digestive Diseases, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
| | | |
Collapse
|
7
|
Tajima H, Tajiki-Nishino R, Watanabe Y, Kurata K, Fukuyama T. Activation of aryl hydrocarbon receptor by benzo[a]pyrene increases interleukin 33 expression and eosinophil infiltration in a mouse model of allergic airway inflammation. J Appl Toxicol 2020; 40:1545-1553. [PMID: 32557721 DOI: 10.1002/jat.4017] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/05/2020] [Accepted: 05/16/2020] [Indexed: 12/15/2022]
Abstract
We recently demonstrated that benzo[a]pyrene (BaP), the aryl hydrocarbon receptor (AhR) ligand, directly contributes to aggravation of cutaneous allergy in a mouse model of allergic dermatitis. The present study aimed to determine whether BaP-induced AhR activation results in development of airway inflammation. Initially, the potential for a direct relationship between BaP-induced AhR activation and airway inflammation was investigated in vivo, using a mouse model of type 2 helper T cell (Th2) hapten toluene-2,4-diisocyanate (TDI)-induced airway inflammation. Mice were orally administered BaP at 48, 24, and 4 h before the final allergen challenge. Oral administration of BaP showed a significant increase in lung inflammation and eosinophil infiltration. While expression of Th2 cytokines such as interleukin 4 (IL-4) and IL-13 was not affected by exposure to BaP, AhR activation significantly increased IL-33 expression. To confirm the in vivo results, in vitro experiments were performed using the human eosinophilic leukemia cell line (EOL-1), human bronchial epithelial cell line (BEAS-2B), and human lung adenocarcinoma epithelial cell line (A549). Results indicated that pre-treatment with BaP increased expression of IL-8 in house dust mite-activated EOL-1, BEAS-2B, and A549 cells. In addition, IL-33 levels in BEAS-2B cells were significantly increased after BaP exposure. Our findings indicated that BaP-induced AhR activation is involved in the pro-inflammatory response in respiratory allergy, and that this effect may be mediated by increased IL-33 expression and eosinophil infiltration.
Collapse
Affiliation(s)
- Hitoshi Tajima
- Toxicology Division, Institute of Environmental Toxicology, Ibaraki, Japan
| | | | - Yuko Watanabe
- Toxicology Division, Institute of Environmental Toxicology, Ibaraki, Japan
| | - Keigo Kurata
- Institute of Tokyo Environmental Allergy, ITEA Inc., Tokyo, Japan
| | - Tomoki Fukuyama
- Toxicology Division, Institute of Environmental Toxicology, Ibaraki, Japan.,Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, Sagamihara-shi, Kanagawa, Japan
| |
Collapse
|
8
|
Kang L, Guo N, Liu X, Wang X, Guo W, Xie SM, Liu C, Lv P, Xing L, Zhang X, Shen H. High mobility group box-1 protects against Aflatoxin G 1-induced pulmonary epithelial cell damage in the lung inflammatory environment. Toxicol Lett 2020; 331:92-101. [PMID: 32446815 DOI: 10.1016/j.toxlet.2020.05.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 12/20/2022]
Abstract
Aflatoxin G1 (AFG1) is a member of the carcinogenic aflatoxin family. Our previous studies indicated that oral administration of AFG1 caused tumor necrosis factor (TNF)-α-dependent inflammation that enhanced oxidative DNA damage in alveolar epithelial cells, which may be related to AFG1-induced lung carcinogenesis. High mobility group box-1 (HMGB1) is a nuclear DNA-binding protein; the intracellular and extracellular roles of HMGB1 have been shown to contribute to DNA repair and sterile inflammation. The role of HMGB1 in DNA damage in an aflatoxin-induced lung inflammatory environment was investigated in this study. Upregulation of HMGB1, TLR2, and RAGE was observed in AFG1-induced lung inflamed tissues and adenocarcinoma. Blocking AFG1-induced inflammation by neutralization of TNF-α inhibited the upregulation of HMGB1 in mouse lung tissues, suggesting that AFG1-induced TNF-α-dependent inflammation regulated HMGB1 expression. In the in vitro human pulmonary epithelial cell line model, Beas-2b, AFG1 directly enhanced the cytosolic translocation of HMGB1 and its extracellular secretion. The addition of extracellular soluble HMGB1 protected AFG1-induced DNA damage through the TLR2/NF-κB pathway in Beas-2b cells. In addition, blockade of endogenous HMGB1 by siRNA significantly enhanced AFG1-induced damage. Thus, our findings showed that both extracellularly-released and nuclear and cytosolic HMGB1 could protect the cell from AFG1-induced cell damage in a TNF-α-dependent lung inflammatory environment.
Collapse
Affiliation(s)
- Lifei Kang
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China; Department of Pathology, Hebei Chest Hospital, Shijiazhuang, China
| | - Ningfei Guo
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Xiaoyi Liu
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Xiuqing Wang
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Wenli Guo
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Shelly M Xie
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Chunping Liu
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Ping Lv
- Department of Pharmacology, Hebei Medical University, Shijiazhuang, China
| | - Lingxiao Xing
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China
| | - Xianghong Zhang
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China; Department of Pathology, The Second Hospital, Hebei Medical University, Shijiazhuang, China.
| | - Haitao Shen
- Laboratory of Pathology, Hebei Medical University, Shijiazhuang, China.
| |
Collapse
|
9
|
Bao Y, Chen Q, Xie Y, Tao Z, Jin K, Chen S, Bai Y, Yang J, Shan S. Ferulic acid attenuates oxidative DNA damage and inflammatory responses in microglia induced by benzo(a)pyrene. Int Immunopharmacol 2019; 77:105980. [DOI: 10.1016/j.intimp.2019.105980] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/01/2019] [Accepted: 10/13/2019] [Indexed: 02/07/2023]
|
10
|
Shao P, Guo N, Wang C, Zhao M, Yi L, Liu C, Kang L, Cao L, Lv P, Xing L, Zhang X, Shen H. Aflatoxin G
1
induced TNF‐α‐dependent lung inflammation to enhance DNA damage in alveolar epithelial cells. J Cell Physiol 2018; 234:9194-9206. [PMID: 30478833 DOI: 10.1002/jcp.27596] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 09/19/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Peilu Shao
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
- Department of Pathology The Second Hospital, Hebei Medical University Shijiazhuang China
| | - Ningfei Guo
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
| | - Can Wang
- Department of Pathology The Second Hospital, Hebei Medical University Shijiazhuang China
| | - Mei Zhao
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
| | - Li Yi
- Department of Pathology The Second Hospital, Hebei Medical University Shijiazhuang China
| | - Chunping Liu
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
| | - Lifei Kang
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
| | - Lei Cao
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
| | - Ping Lv
- Department of Pharmacology Hebei Medical University Shijiazhuang China
| | - Lingxiao Xing
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
| | - Xianghong Zhang
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
- Department of Pathology The Second Hospital, Hebei Medical University Shijiazhuang China
| | - Haitao Shen
- Laboratory of Pathology, School of Basic Medical Sciences, Hebei Medical University Shijiazhuang China
| |
Collapse
|
11
|
Kamata S, Fujino N, Yamada M, Grime K, Suzuki S, Ota C, Tando Y, Okada Y, Sakurada A, Noda M, Matsuda Y, Sugiura H, Ichinose M. Expression of cytochrome P450 mRNAs in Type II alveolar cells from subjects with chronic obstructive pulmonary disease. Pharmacol Res Perspect 2018; 6:e00405. [PMID: 29850024 PMCID: PMC5964255 DOI: 10.1002/prp2.405] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 04/24/2018] [Indexed: 12/24/2022] Open
Abstract
Inhaled drugs are critical for the treatment of inflammatory airway diseases such as chronic obstructive pulmonary disease (COPD). To develop better therapeutics for pulmonary disease it is of potential importance to understand molecular mechanisms of local biotransformation in the lung. Alveolar epithelial type II (ATII) cells have a key role in homeostasis in the lung, but little is known about expression patterns of genes encoding cytochrome P450 (CYP) enzymes in ATII cells. In addition, alteration of CYP gene expression has not been fully defined in COPD. We previously established a method to purify ATII cells from the adult human lung using fluorescence‐activated cell sorting. By employing this technique we determined gene expression patterns of 14 CYP enzymes in ATII cells from nonsmokers (n = 4) and smokers (n = 4), both having normal pulmonary function. Although most CYP genes are highly expressed in primary hepatocytes, we found that CYP1B1 mRNA expression was 7.2‐fold higher in ATII compared to hepatocytes (P = .0275). Additionally we noted a 3.0‐fold upregulation of CYP2C19 and 50% reduction in CYP2J2 mRNA expressions in ATII cells isolated from patients with COPD (n = 3) compared to smokers without COPD (n = 4). These data, for the first time, detail a comprehensive set of genes encoding CYP enzymes in human ATII cells and highlights differentially expressed CYP mRNAs of patients with COPD. Such understanding may have important implications for the development of novel inhaled drugs.
Collapse
Affiliation(s)
- Satoshi Kamata
- Department of Thoracic Surgery Institute of Development, Aging and Cancer Tohoku University Sendai Japan
| | - Naoya Fujino
- Department of Respiratory Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Mitsuhiro Yamada
- Department of Respiratory Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Ken Grime
- Respiratory Inflammation & Autoimmunity IMED Biotech Unit AstraZeneca Gothenburg Sweden
| | - Satoshi Suzuki
- Department of Thoracic Surgery Japanese Red Cross Ishinomaki Hospital Ishinomaki Japan
| | - Chiharu Ota
- Department of Advanced Preventive Medicine for Infectious Disease Tohoku University Graduate School of Medicine Sendai Japan
| | - Yukiko Tando
- Department of Advanced Preventive Medicine for Infectious Disease Tohoku University Graduate School of Medicine Sendai Japan
| | - Yoshinori Okada
- Department of Thoracic Surgery Institute of Development, Aging and Cancer Tohoku University Sendai Japan
| | - Akira Sakurada
- Department of Thoracic Surgery Institute of Development, Aging and Cancer Tohoku University Sendai Japan
| | - Masafumi Noda
- Department of Thoracic Surgery Institute of Development, Aging and Cancer Tohoku University Sendai Japan
| | - Yasushi Matsuda
- Department of Thoracic Surgery Institute of Development, Aging and Cancer Tohoku University Sendai Japan
| | - Hisatoshi Sugiura
- Department of Respiratory Medicine Tohoku University Graduate School of Medicine Sendai Japan
| | - Masakazu Ichinose
- Department of Respiratory Medicine Tohoku University Graduate School of Medicine Sendai Japan
| |
Collapse
|
12
|
Shi Q, Fijten RR, Spina D, Riffo Vasquez Y, Arlt VM, Godschalk RW, Van Schooten FJ. Altered gene expression profiles in the lungs of benzo[a]pyrene-exposed mice in the presence of lipopolysaccharide-induced pulmonary inflammation. Toxicol Appl Pharmacol 2017; 336:8-19. [PMID: 28987381 PMCID: PMC5703654 DOI: 10.1016/j.taap.2017.09.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/22/2017] [Accepted: 09/29/2017] [Indexed: 12/13/2022]
Abstract
Patients with inflammatory lung diseases are often additionally exposed to polycyclic aromatic hydrocarbons like B[a]P and B[a]P-induced alterations in gene expression in these patients may contribute to the development of lung cancer. Mice were intra-nasally treated with lipopolysaccharide (LPS, 20μg/mouse) to induce pulmonary inflammation and subsequently exposed to B[a]P (0.5mg/mouse) by intratracheal instillation. Gene expression changes were analyzed in mouse lungs by RNA microarrays. Analysis of genes that are known to be involved in the cellular response to B[a]P indicated that LPS significantly inhibited gene expression of various enzymes linked to B[a]P metabolism, which was confirmed by phenotypic analyses of enzyme activity. Ultimately, these changes resulted in higher levels of B[a]P-DNA adducts in the lungs of mice exposed to B[a]P with prior LPS treatment compared to the lungs of mice exposed to B[a]P alone. Using principle component analysis (PCA), we found that of all the genes that were significantly altered in their expression, those that were able to separate the different exposure conditions were predominantly related to immune-response. Moreover, an overall analysis of differentially expressed genes indicated that cell-cell adhesion and cell-cell communication was inhibited in lungs of mice that received both B[a]P and LPS. Our results indicate that pulmonary inflammation increased the genotoxicity of B[a]P via inhibition of both phase I and II metabolism. Therefore, inflammation could be a critical contributor to B[a]P-induced carcinogenesis in humans.
Collapse
Affiliation(s)
- Q Shi
- Department of Toxicology & Pharmacology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200, MD, Maastricht, The Netherlands
| | - R R Fijten
- Department of Toxicology & Pharmacology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200, MD, Maastricht, The Netherlands
| | - D Spina
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - Y Riffo Vasquez
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - V M Arlt
- Analytical and Environmental Sciences Division, MRC-PHE Centre for Environmental & Health, King's College London, 150 Stamford Street, London SE1 9NH, United Kingdom
| | - R W Godschalk
- Department of Toxicology & Pharmacology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200, MD, Maastricht, The Netherlands.
| | - F J Van Schooten
- Department of Toxicology & Pharmacology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200, MD, Maastricht, The Netherlands
| |
Collapse
|
13
|
Cancer chemoprevention revisited: Cytochrome P450 family 1B1 as a target in the tumor and the microenvironment. Cancer Treat Rev 2017; 63:1-18. [PMID: 29197745 DOI: 10.1016/j.ctrv.2017.10.013] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 02/08/2023]
Abstract
Cancer chemoprevention is the use of synthetic, natural or biological agents to prevent or delay the development or progression of malignancies. Intriguingly, many phytochemicals with anti-inflammatory and anti-angiogenic effects, recently proposed as chemoprevention strategies, are inhibitors of Cytochrome P450 family 1B1 (CYP1B1), an enzyme overexpressed in a wide variety of tumors and associated with angiogenesis. In turn, pro-inflammatory cytokines were reported to boost CYP1B1 expression, suggesting a key role of CYP1B1 in a positive loop of inflammatory angiogenesis. Other well-known pro-tumorigenic activities of CYP1B1 rely on metabolic bioactivation of xenobiotics and steroid hormones into their carcinogenic derivatives. In contrast to initial in vitro observations, in vivo studies demonstrated a protecting role against cancer for the other CYP1 family members (CYP1A1 and CYP1A2), suggesting that the specificity of CYP1 family inhibitors should be carefully taken into account for developing potential chemoprevention strategies. Recent studies also proposed a role of CYP1B1 in multiple cell types found within the tumor microenvironment, including fibroblasts, endothelial and immune cells. Overall, our review of the current literature suggests a positive loop between inflammatory cytokines and CYP1B1, which in turn may play a key role in cancer angiogenesis, acting on both cancer cells and the tumor microenvironment. Strategies aiming at specific CYP1B1 inhibition in multiple cell types may translate into clinical chemoprevention and angioprevention approaches.
Collapse
|
14
|
Inflammation and the chemical carcinogen benzo[a]pyrene: Partners in crime. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2017; 774:12-24. [DOI: 10.1016/j.mrrev.2017.08.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 08/02/2017] [Accepted: 08/19/2017] [Indexed: 12/12/2022]
|
15
|
Song MA, Benowitz NL, Berman M, Brasky TM, Cummings KM, Hatsukami DK, Marian C, O'Connor R, Rees VW, Woroszylo C, Shields PG. Cigarette Filter Ventilation and its Relationship to Increasing Rates of Lung Adenocarcinoma. J Natl Cancer Inst 2017; 109:3836090. [PMID: 28525914 DOI: 10.1093/jnci/djx075] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 03/23/2017] [Indexed: 01/09/2023] Open
Abstract
The 2014 Surgeon General's Report on smoking and health concluded that changing cigarette designs have caused an increase in lung adenocarcinomas, implicating cigarette filter ventilation that lowers smoking machine tar yields. The Food and Drug Administration (FDA) now has the authority to regulate cigarette design if doing so would improve public health. To support a potential regulatory action, two weight-of-evidence reviews were applied for causally relating filter ventilation to lung adenocarcinoma. Published scientific literature (3284 citations) and internal tobacco company documents contributed to causation analysis evidence blocks and the identification of research gaps. Filter ventilation was adopted in the mid-1960s and was initially equated with making a cigarette safer. Since then, lung adenocarcinoma rates paradoxically increased relative to other lung cancer subtypes. Filter ventilation 1) alters tobacco combustion, increasing smoke toxicants; 2) allows for elasticity of use so that smokers inhale more smoke to maintain their nicotine intake; and 3) causes a false perception of lower health risk from "lighter" smoke. Seemingly not supportive of a causal relationship is that human exposure biomarker studies indicate no reduction in exposure, but these do not measure exposure in the lung or utilize known biomarkers of harm. Altered puffing and inhalation may make smoke available to lung cells prone to adenocarcinomas. The analysis strongly suggests that filter ventilation has contributed to the rise in lung adenocarcinomas among smokers. Thus, the FDA should consider regulating its use, up to and including a ban. Herein, we propose a research agenda to support such an effort.
Collapse
Affiliation(s)
- Min-Ae Song
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Neal L Benowitz
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Micah Berman
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Theodore M Brasky
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - K Michael Cummings
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Dorothy K Hatsukami
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Catalin Marian
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Richard O'Connor
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Vaughan W Rees
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Casper Woroszylo
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| | - Peter G Shields
- Affiliations of authors: Comprehensive Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH (MAS, MB, TMB, CM, PGS); Division of Epidemiology, The Ohio State University College of Public Health, Columbus, OH (MAS, CW); Departments of Medicine and Bioengineering and Therapeutic Sciences, Division of Clinical Pharmacology and Experimental Therapeutics and Center for Tobacco Control Research and Education, University of California, San Francisco, CA (NLB); College of Public Health and Moritz College of Law, The Ohio State University, Columbus, OH (MB); Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC (KMC); Tobacco Research Programs and Department of Psychiatry, University of Minnesota, Minneapolis, MN (DH); Biochemistry and Pharmacology Department, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania, (CM); Department of Health Behavior, Roswell Park Cancer Institute, Buffalo, NY (RO); Center for Global Tobacco Control, Department of Social and Behavioral Sciences, Harvard T. H. Chan School of Public Health, Boston, MA (VWR)
| |
Collapse
|
16
|
Badal SAM, Asuncion Valenzuela MM, Zylstra D, Huang G, Vendantam P, Francis S, Quitugua A, Amis LH, Davis W, Tzeng TRJ, Jacobs H, Gangemi DJ, Raner G, Rowland L, Wooten J, Campbell P, Brantley E, Delgoda R. Glaucarubulone glucoside from Castela macrophylla suppresses MCF-7 breast cancer cell growth and attenuates benzo[a]pyrene-mediated CYP1A gene induction. J Appl Toxicol 2017; 37:873-883. [PMID: 28138972 DOI: 10.1002/jat.3436] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 11/24/2016] [Accepted: 12/12/2016] [Indexed: 01/04/2023]
Abstract
Quassinoids often exhibit antioxidant and antiproliferative activity. Emerging evidence suggests that these natural metabolites also display chemopreventive actions. In this study, we investigated the potential for the quassinoid glaucarubulone glucoside (Gg), isolated from the endemic Jamaican plant Castela macrophylla (Simaroubaceae), to display potent cytotoxicity and inhibit human cytochrome P450s (CYPs), particularly CYP1A enzymes, known to convert polyaromatic hydrocarbons into carcinogenic metabolites. Gg reduced the viability of MCF-7 breast adenocarcinoma cells (IC50 = 121 nm) to a greater extent than standard of care anticancer agents 5-fluorouracil, tamoxifen (IC50 >10 μm) and the tamoxifen metabolite 4-hydroxytamoxifen (IC50 = 2.6 μm), yet was not cytotoxic to non-tumorigenic MCF-10A breast epithelial cells. Additionally, Gg induced MCF-7 breast cancer cell death. Gg blocked increases in reactive oxygen species in MCF-10A cells mediated by the polyaromatic hydrocarbon benzo[a]pyrene (B[a]P) metabolite B[a]P 1,6-quinone, yet downregulated the expression of genes that promote antioxidant activity in MCF-7 cells. This implies that Gg exhibits antioxidant and cytoprotective actions in non-tumorigenic breast epithelial cells and pro-oxidant, cytotoxic actions in breast cancer cells. Furthermore, Gg inhibited the activities of human CYP1A according to non-competitive kinetics and attenuated the ability of B[a]P to induce CYP1A gene expression in MCF-7 cells. These data indicate that Gg selectively suppresses MCF-7 breast cancer cell growth without impacting non-tumorigenic breast epithelial cells and blocks B[a]P-mediated CYP1A induction. Taken together, our data provide a rationale for further investigations of Gg and similar plant isolates as potential agents to treat and prevent breast cancer. Copyright © 2017 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Simone A M Badal
- Natural Products Institute, Faculty of Science and Technology, University of the West Indies, Mona, Jamaica, West Indies.,Department of Basic Medical Sciences, Faculty of Medical Sciences, University of the West Indies, Mona, Jamaica, West Indies
| | - Malyn M Asuncion Valenzuela
- Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University Health School of Medicine, Loma Linda, CA, 92350, USA
| | - Dain Zylstra
- Department of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA, 92350, USA
| | - George Huang
- Department of Biological Sciences, Clemson University, Clemson, SC, 29634, USA
| | - Pallavi Vendantam
- Department of Biological Sciences, Clemson University, Clemson, SC, 29634, USA
| | - Sheena Francis
- Natural Products Institute, Faculty of Science and Technology, University of the West Indies, Mona, Jamaica, West Indies
| | - Ashley Quitugua
- Department of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA, 92350, USA
| | - Louisa H Amis
- Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University Health School of Medicine, Loma Linda, CA, 92350, USA
| | - Willie Davis
- Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University Health School of Medicine, Loma Linda, CA, 92350, USA.,Department of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA, 92350, USA
| | - Tzuen-Rong J Tzeng
- Department of Biological Sciences, Clemson University, Clemson, SC, 29634, USA
| | - Helen Jacobs
- Department of Chemistry, Faculty of Science and Technology, University of the West Indies, Mona, Jamaica, West Indies
| | - David J Gangemi
- Department of Biological Sciences, Clemson University, Clemson, SC, 29634, USA
| | - Greg Raner
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC, 27402, USA.,Department of Biology and Chemistry, Liberty University, Lynchburg, VA, 24515, USA
| | - Leah Rowland
- Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University Health School of Medicine, Loma Linda, CA, 92350, USA
| | - Jonathan Wooten
- Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University Health School of Medicine, Loma Linda, CA, 92350, USA
| | - Petreena Campbell
- Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University Health School of Medicine, Loma Linda, CA, 92350, USA
| | - Eileen Brantley
- Department of Basic Sciences, Center for Health Disparities and Molecular Medicine, Loma Linda University Health School of Medicine, Loma Linda, CA, 92350, USA.,Department of Pharmaceutical and Administrative Sciences, Loma Linda University Health School of Pharmacy, Loma Linda, CA, 92350, USA.,Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Rupika Delgoda
- Natural Products Institute, Faculty of Science and Technology, University of the West Indies, Mona, Jamaica, West Indies
| |
Collapse
|
17
|
Shi Q, Maas L, Veith C, Van Schooten FJ, Godschalk RW. Acidic cellular microenvironment modifies carcinogen-induced DNA damage and repair. Arch Toxicol 2016; 91:2425-2441. [PMID: 28005143 PMCID: PMC5429366 DOI: 10.1007/s00204-016-1907-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 12/06/2016] [Indexed: 12/08/2022]
Abstract
Chronic inflammation creates an acidic microenvironment, which plays an important role in cancer development. To investigate how low pH changes the cellular response to the carcinogen benzo[a]pyrene (B[a]P), we incubated human pulmonary epithelial cells (A549 and BEAS-2B) with nontoxic doses of B[a]P using culturing media of various pH’s (extracellular pH (pHe) of 7.8, 7.0, 6.5, 6.0 and 5.5) for 6, 24 and 48 h. In most incubations (pHe 7.0–6.5), the pH in the medium returned to the physiological pH 7.8 after 48 h, but at the lowest pH (pHe < 6.0), this recovery was incomplete. Similar changes were observed for the intracellular pH (pHi). We observed that acidic conditions delayed B[a]P metabolism and at t = 48 h, and the concentration of unmetabolized extracellular B[a]P and B[a]P-7,8-diol was significantly higher in acidic samples than under normal physiological conditions (pHe 7.8) for both cell lines. Cytochrome P450 (CYP1A1/CYP1B1) expression and its activity (ethoxyresorufin-O-deethylase activity) were repressed at low pHe after 6 and 24 h, but were significantly higher at t = 48 h. In addition, a DNA repair assay showed that the incision activity was ~80% inhibited for 6 h at low pHe and concomitant exposure to B[a]P. However, at t = 48 h, the incision activity recovered to more than 100% of the initial activity observed at neutral pHe. After 48 h, higher B[a]P-DNA adduct levels and γ-H2AX foci were observed at low pH samples than at pHe 7.8. In conclusion, acidic pH delayed the metabolism of B[a]P and inhibited DNA repair, ultimately leading to increased B[a]P-induced DNA damage.
Collapse
Affiliation(s)
- Q Shi
- Department of Pharmacology and Toxicology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands
| | - L Maas
- Department of Pharmacology and Toxicology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands
| | - C Veith
- Department of Pharmacology and Toxicology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands
| | - F J Van Schooten
- Department of Pharmacology and Toxicology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands
| | - R W Godschalk
- Department of Pharmacology and Toxicology, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, PO Box 616, 6200 MD, Maastricht, The Netherlands.
| |
Collapse
|
18
|
Adedara IA, Owoeye O, Aiyegbusi MA, Dagunduro JO, Daramola YM, Farombi EO. Kolaviron protects against benzo[a]pyrene-induced functional alterations along the brain-pituitary-gonadal axis in male rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:459-470. [PMID: 26280929 DOI: 10.1016/j.etap.2015.07.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/19/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
Exposure to benzo[a]pyrene (B[a]P) is well reported to be associated with neurological and reproductive dysfunctions. The present study investigated the influence of kolaviron, an isolated biflavonoid from the seed of Garcinia kola, on functional alterations along the brain-pituitary-gonadal axis in male rats exposed to B[a]P. Benzo[a]pyrene was orally administered at a dose of 10mg/kg alone or orally co-administered with kolaviron at 100 and 200mg/kg for 15 consecutive days. Administration of B[a]P significantly (p<0.05) decreased plasma levels of pituitary hormones namely follicle-stimulating hormone (FSH) and prolactin but increased luteinizing hormone (LH) by 47%, 55% and 20.9%, respectively, when compared with the control. The significant decrease in gonadosomatic index (GSI) was accompanied by significant decrease in testosterone production and sperm functional parameters in the B[a]P-treated rats. Moreover, B[a]P-treated rats showed significant elevation in the circulatory concentrations of pro-inflammatory cytokines and oxidative stress indices in the brain, testes and sperm of B[a]P-treated rats. Light microscopy revealed severe necrosis of the Purkinje cells in the cerebellum, neuronal degeneration of the cerebral cortex, neuronal necrosis of the hippocampus and testicular atrophy in B[a]P-treated rats. Kolaviron co-treatment significantly ameliorated B[a]P mediated damages by suppressing pro-inflammatory mediators and enhancing the antioxidant status, neuroendocrine function, sperm characteristics and improving the architecture of the brain and testes in B[a]P-treated rats. The findings in the present investigation highlight that kolaviron may be developed to novel therapeutic agent against toxicity resulting from B[a]P exposure.
Collapse
Affiliation(s)
- Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Olatunde Owoeye
- Department of Anatomy, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Motunrayo A Aiyegbusi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Joshua O Dagunduro
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Yetunde M Daramola
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| |
Collapse
|
19
|
Arlt VM, Krais AM, Godschalk RW, Riffo-Vasquez Y, Mrizova I, Roufosse CA, Corbin C, Shi Q, Frei E, Stiborova M, van Schooten FJ, Phillips DH, Spina D. Pulmonary Inflammation Impacts on CYP1A1-Mediated Respiratory Tract DNA Damage Induced by the Carcinogenic Air Pollutant Benzo[a]pyrene. Toxicol Sci 2015; 146:213-25. [PMID: 25911668 PMCID: PMC4517052 DOI: 10.1093/toxsci/kfv086] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Pulmonary inflammation can contribute to the development of lung cancer in humans. We investigated whether pulmonary inflammation alters the genotoxicity of polycyclic aromatic hydrocarbons (PAHs) in the lungs of mice and what mechanisms are involved. To model nonallergic acute inflammation, mice were exposed intranasally to lipopolysaccharide (LPS; 20 µg/mouse) and then instilled intratracheally with benzo[a]pyrene (BaP; 0.5 mg/mouse). BaP-DNA adduct levels, measured by (32)P-postlabeling analysis, were approximately 3-fold higher in the lungs of LPS/BaP-treated mice than in mice treated with BaP alone. Pulmonary Cyp1a1 enzyme activity was decreased in LPS/BaP-treated mice relative to BaP-treated mice suggesting that pulmonary inflammation impacted on BaP-induced Cyp1a1 activity in the lung. Our results showed that Cyp1a1 appears to be important for BaP detoxification in vivo and that the decrease of pulmonary Cyp1a1 activity in LPS/BaP-treated mice results in a decrease of pulmonary BaP detoxification, thereby enhancing BaP genotoxicity (ie, DNA adduct formation) in the lung. Because less BaP was detoxified by Cyp1a1 in the lungs of LPS/BaP-treated mice, more BaP circulated via the blood to extrapulmonary tissues relative to mice treated with BaP only. Indeed, we observed higher BaP-DNA adduct levels in livers of LPS/BaP-treated mice compared with BaP-treated mice. Our results indicate that pulmonary inflammation could be a critical determinant in the induction of genotoxicity in the lung by PAHs like BaP. Cyp1a1 appears to be involved in both BaP bioactivation and detoxification although the contribution of other enzymes to BaP-DNA adduct formation in lung and liver under inflammatory conditions remains to be explored.
Collapse
Affiliation(s)
- Volker M Arlt
- *Analytical and Environmental Sciences Division, MRC-PHE Centre for Environment & Health, King's College London, London SE1 9NH, United Kingdom,
| | - Annette M Krais
- *Analytical and Environmental Sciences Division, MRC-PHE Centre for Environment & Health, King's College London, London SE1 9NH, United Kingdom
| | - Roger W Godschalk
- Department of Toxicology, School for Nutrition, Toxicology and Metabolism (NUTRIM), Maastricht University Medical Centre, 6200 MD Maastricht, The Netherlands
| | - Yanira Riffo-Vasquez
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| | - Iveta Mrizova
- Department of Biochemistry, Faculty of Science, Charles University, 12840 Prague 2, Czech Republic
| | - Candice A Roufosse
- Department of Histopathology, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London W12 0HS, United Kingdom, and
| | - Charmaine Corbin
- *Analytical and Environmental Sciences Division, MRC-PHE Centre for Environment & Health, King's College London, London SE1 9NH, United Kingdom
| | - Quan Shi
- Department of Toxicology, School for Nutrition, Toxicology and Metabolism (NUTRIM), Maastricht University Medical Centre, 6200 MD Maastricht, The Netherlands
| | - Eva Frei
- Division of Preventive Oncology, National Center for Tumor Diseases, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Marie Stiborova
- Department of Biochemistry, Faculty of Science, Charles University, 12840 Prague 2, Czech Republic
| | - Frederik-Jan van Schooten
- Department of Toxicology, School for Nutrition, Toxicology and Metabolism (NUTRIM), Maastricht University Medical Centre, 6200 MD Maastricht, The Netherlands
| | - David H Phillips
- *Analytical and Environmental Sciences Division, MRC-PHE Centre for Environment & Health, King's College London, London SE1 9NH, United Kingdom
| | - Domenico Spina
- Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| |
Collapse
|
20
|
Šmerdová L, Svobodová J, Kabátková M, Kohoutek J, Blažek D, Machala M, Vondráček J. Upregulation of CYP1B1 expression by inflammatory cytokines is mediated by the p38 MAP kinase signal transduction pathway. Carcinogenesis 2014; 35:2534-43. [DOI: 10.1093/carcin/bgu190] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
|
21
|
Thakur VS, Liang YW, Lingappan K, Jiang W, Wang L, Barrios R, Zhou G, Guntupalli B, Shivanna B, Maturu P, Welty SE, Moorthy B, Couroucli XI. Increased susceptibility to hyperoxic lung injury and alveolar simplification in newborn rats by prenatal administration of benzo[a]pyrene. Toxicol Lett 2014; 230:322-32. [PMID: 24657529 DOI: 10.1016/j.toxlet.2014.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 02/11/2014] [Accepted: 03/11/2014] [Indexed: 12/27/2022]
Abstract
Maternal smoking is one of the risk factors for preterm birth and for the development of bronchopulmonary dysplasia (BPD). In this study, we tested the hypothesis that prenatal exposure of rats to benzo[a]pyrene (BP), a component of cigarette smoke, will result in increased susceptibility of newborns to oxygen-mediated lung injury and alveolar simplification, and that cytochrome P450 (CYP)1A and 1B1 enzymes and oxidative stress mechanistically contribute to this phenomenon. Timed pregnant Fisher 344 rats were administered BP (25 mg/kg) or the vehicle corn oil (CO) on gestational days 18, 19 and 20, and newborn rats were either maintained in room air or exposed to hyperoxia (85% O2) for 7 or 14 days. Hyperoxic newborn rats prenatally exposed to the vehicle CO showed lung injury and alveolar simplification, and inflammation, and these effects were potentiated in rats that were prenatally exposed to BP. Prenatal exposure to BP, followed by hyperoxia, also resulted in significant modulation of hepatic and pulmonary cytochrome P450 (CYP)1A and 1B1 enzymes at PND 7-14. These rats displayed significant oxidative stress in lungs at postnatal day (PND) 14, as evidenced by increased levels of the F2-isoprostane 8-iso-PGF2α. Furthermore, these animals showed BP-derived DNA adducts and oxidative DNA adducts in the lung. In conclusion, our results show increased susceptibility of newborns to oxygen-mediated lung injury and alveolar simplification following maternal exposure to BP, and our results suggest that modulation of CYP1A/1B1 enzymes, increases in oxidative stress, and BP-DNA adducts contributed to this phenomenon.
Collapse
Affiliation(s)
- Vijay S Thakur
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Yanhong W Liang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Krithika Lingappan
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Weiwu Jiang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Lihua Wang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Roberto Barrios
- Department of Pathology and Genomic Medicine, The Methodist Hospital Physician Organization, 6565 Fannin Street, Suite M227, Houston, TX 77030, USA
| | - Guodong Zhou
- Institute of Biotechnology, Texas A&M University Health Science Center, Houston, TX 77030, USA
| | - Bharath Guntupalli
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Binoy Shivanna
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Paramahamsa Maturu
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Stephen E Welty
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Bhagavatula Moorthy
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA
| | - Xanthi I Couroucli
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, 1102 Bates Avenue, MC: FC530.01, Houston, TX 77030, USA.
| |
Collapse
|