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Batchu S, Hakim A, Henry OS, Madzo J, Atabek U, Spitz FR, Hong YK. Transcriptome-guided resolution of tumor microenvironment interactions in pheochromocytoma and paraganglioma subtypes. J Endocrinol Invest 2022; 45:989-998. [PMID: 35088383 DOI: 10.1007/s40618-021-01729-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 12/19/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Pheochromocytomas and paragangliomas (PCPG) are rare catecholamine-secreting endocrine tumors deriving from chromaffin cells of the embryonic neural crest. Although distinct molecular PCPG subtypes have been elucidated, certain characteristics of these tumors have yet to be fully examined, namely the tumor microenvironment (TME). To further understand tumor-stromal interactions in PCPG subtypes, the present study deconvoluted bulk tumor gene expression to examine ligand-receptor interactions. METHODS RNA-sequencing data primary solid PCPG tumors were derived from The Cancer Genome Atlas (TCGA). Tumor purity was estimated using two robust algorithms. The tumor purity estimates and bulk tumor expression values allowed for non-negative linear regression to predict the average expression of each gene in the stromal and tumor compartments for each PCPG molecular subtype. The predicted expression values were then used in conjunction with a previously curated ligand-receptor database and scoring system to evaluate top ligand-receptor interactions. RESULTS Across all PCPG subtypes compared to normal samples, tumor-to-tumor signaling between bone morphogenic proteins 7 (BMP7) and 15 (BMP15) and cognate receptors ACVR2B and BMPR1B was increased. In addition, tumor-to-stroma signaling was enriched for interactions between predicted tumor-originating delta-like ligand 3 (DLL3) and predicted stromal NOTCH receptors. Stroma-to-tumor signaling was enriched for interactions between ephrins A1 and A4 with ephrin receptors EphA5, EphA7, and EphA8. Pseudohypoxia subtype tumors displayed increased predicted stromal expression of genes related to immune-exhausted T-cell response, including those for inhibitory receptors HAVCR2 and CTLA4. CONCLUSION The current exploratory study predicted stromal and tumor through compartmental deconvolution and yielded previously unrecognized interactions and putative biomarkers in PCPG.
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Affiliation(s)
- S Batchu
- Cooper Medical School at Rowan University, 401 Broadway, Camden, NJ, 08103, USA.
| | - A Hakim
- Department of Surgery, Cooper University Hospital, Camden, NJ, USA
| | - O S Henry
- Cooper Medical School at Rowan University, 401 Broadway, Camden, NJ, 08103, USA
| | - J Madzo
- Coriell Institute, Camden, NJ, USA
| | - U Atabek
- Department of Surgery, Cooper University Hospital, Camden, NJ, USA
| | - F R Spitz
- Department of Surgery, Cooper University Hospital, Camden, NJ, USA
| | - Y K Hong
- Department of Surgery, Cooper University Hospital, Camden, NJ, USA
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2
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Lin SY, Sung FC, Lin CL, Lin CC, Hsu WH, Liao WC, Ho MW, Lin PC, Hsu CY, Kao CH. Association of antihypertensives during hospitalisation with acute respiratory failure in patients with viral pneumonia: A population-based case-control study. Int J Clin Pract 2021; 75:e14776. [PMID: 34510649 DOI: 10.1111/ijcp.14776] [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: 03/24/2021] [Revised: 07/03/2021] [Accepted: 08/30/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND We aimed to identify associations between the risk of acute respiratory failure (ARF) and types of antihypertensive agents in patients with viral pneumonia. METHODS In this case-control study, data extracted from the Taiwan National Health Insurance Research Database were analysed. The base population comprised patients with viral pneumonia treated from 2000 to 2013. The case group comprised patients with ARF and the control group comprised participants without ARF. Adjusted odds ratios (ORs) were calculated using a multivariable logistic regression model. RESULTS In total, 4427 viral pneumonia patients with ARF and 4427 matched control participants without ARF were recruited. Patients with diabetes, alcohol-related disease, asthma, chronic kidney disease or end-stage renal disease, chronic obstructive pulmonary disease, cancer, congestive heart failure, stroke, acute pulmonary oedema and shock had increased odds of developing ARF, especially shock (adjusted OR = 49.3; 95% CI = 27.4, 88.7), cancer (12.6; 8.67, 18.2) and stroke (7.51; 5.32, 10.6). Increasing odds of developing ARF were noted in patients using potassium-sparing diuretics (2.95; 1.54, 5.64), loop diuretics (68.2; 48.1, 96.6), calcium channel blockers (1.64; 1.26, 2.13) and angiotensin-converting enzyme inhibitors (1.70; 1.15, 2.53). Patients with prescriptions of α-blockers (0.44; 0.26, 0.74), β-blockers (0.37; 0.26, 0.52), thiazides (0.38; 0.25, 0.59) and angiotensin receptor blockers (0.65; 0.51, 0.83) had lower odds of having ARF. CONCLUSION Patients with viral pneumonia who received α-blockers, β-blockers, thiazides or angiotensin receptor blockers during hospitalisation had a lower risk of developing ARF.
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Affiliation(s)
- Shih-Yi Lin
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Division of Nephrology and Kidney Institute, China Medical University Hospital, Taichung, Taiwan
| | - Fung-Chang Sung
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Cheng-Li Lin
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Cheng-Chieh Lin
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Family Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Wu-Huei Hsu
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Chest Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Wei-Chih Liao
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Chest Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Mao-Wang Ho
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Infection, China Medical University Hospital, Taichung, Taiwan
| | - Po-Chang Lin
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Infection, China Medical University Hospital, Taichung, Taiwan
| | - Chung-Y Hsu
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
| | - Chia-Hung Kao
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Nuclear Medicine and PET Center, China Medical University Hospital, Taichung, Taiwan
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan
- Center of Augmented Intelligence in Healthcare, China Medical University Hospital, Taichung, Taiwan
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Al-Hassan S, Attia H, Alomar H, Arafa M, Ali RA. The inhibitory mechanisms of losartan and vitamin D on amiodarone-induced lung inflammation in rats: Role of mitogen-activated protein kinases/activator protein-1. J Biochem Mol Toxicol 2021; 35:e22923. [PMID: 34590760 DOI: 10.1002/jbt.22923] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 08/22/2021] [Accepted: 09/20/2021] [Indexed: 11/09/2022]
Abstract
Amiodarone (AMD), an antiarrhythmic drug, is used cautiously due to its lung toxicity that is characterized by alveolar inflammation followed by fatal fibrosis. AMD induces lung inflammation via increasing the alveolar macrophages and disturbing the balance of T-helper-1 (Th1) and Th2 cells cytokines. In this study, the role of the mitogen-activated protein kinases (MAPKs)/activator protein-1 (AP-1) pathway in AMD-induced lung inflammation was evaluated. Also, the anti-inflammatory and antifibrotic effects of losartan and/or vitamin D were investigated following 7, 14, and 28 days of AMD administration. AMD resulted in lung injury, inflammatory infiltration, and increased pulmonary levels of inflammatory cytokines starting from Week 1 of exposure. A significant increase in serum levels of interleukin-4 along with a significant reduction of interferon-gamma, in addition to strong expression of CD68, were reported after 14 and 28 days of AMD administration reflecting Th1/Th2 cytokines imbalance and the accumulation of alveolar macrophages, respectively. The phosphorylation of MAPKs (ERK1/2, JNK, p38) and AP-1 was significantly enhanced starting from Week 1 of exposure. Marked expression of transforming growth factor beta-1 and massive deposition of collagen were detected after 28 days reflecting late fibrosis. All these abnormalities were significantly mitigated by vitamin D and its combination with losartan. Losartan alone has less prominent anti-inflammatory effects particularly after 28 days; however, it efficiently prevented late fibrosis. This study concludes that MAPKs/AP-1 pathway is involved in AMD-induced lung inflammation and that vitamin D and/or losartan could be used as a prophylactic agent to prevent AMD-induced lung toxicity.
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Affiliation(s)
- Sara Al-Hassan
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,Department of Pricing and Pharmacoeconomics, Drug Sector, Saudi Food and Drug Authority, Riyadh, Saudi Arabia
| | - Hala Attia
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,Department of Biochemistry, College of Pharmacy, Mansours University, Mansoura, Egypt
| | - Hatun Alomar
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Maha Arafa
- Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Rehab A Ali
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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4
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Bellet MM, Pieroni S, Castelli M, Piobbico D, Fallarino F, Romani L, Della-Fazia MA, Servillo G. HOPS/Tmub1 involvement in the NF-kB-mediated inflammatory response through the modulation of TRAF6. Cell Death Dis 2020; 11:865. [PMID: 33060567 PMCID: PMC7567074 DOI: 10.1038/s41419-020-03086-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/28/2020] [Accepted: 09/30/2020] [Indexed: 12/23/2022]
Abstract
HOPS/Tmub1 is a ubiquitously expressed transmembrane ubiquitin-like protein that shuttles between nucleus and cytoplasm during cell cycle progression. HOPS causes cell cycle arrest in G0/G1 phase, an event associated to stabilization of p19Arf, an important tumor suppressor protein. Moreover, HOPS plays an important role in driving centrosomal assembly and maintenance, mitotic spindle proper organization, and ultimately a correct cell division. Recently, HOPS has been described as an important regulator of p53, which acts as modifier, stabilizing p53 half-life and playing a key role in p53 mediating apoptosis after DNA damage. NF-κB is a transcription factor with a central role in many cellular events, including inflammation and apoptosis. Our experiments demonstrate that the transcriptional activity of the p65/RelA NF-κB subunit is regulated by HOPS. Importantly, Hops−/− cells have remarkable alterations of pro-inflammatory responses. Specifically, we found that HOPS enhances NF-κB activation leading to increase transcription of inflammatory mediators, through the reduction of IκBα stability. Notably, this effect is mediated by a direct HOPS binding to the E3 ubiquitin ligase TRAF6, which lessens TRAF6 stability ultimately leading increased IKK complex activation. These findings uncover a previously unidentified function of HOPS/Tmub1 as a novel modulator of TRAF6, regulating inflammatory responses driven by activation of the NF-κB signaling pathway. The comprehension on how HOPS/Tmub1 takes part to the inflammatory processes in vivo and whether this function is important in the control of proliferation and tumorigenesis could establish the basis for the development of novel pharmacological strategies.
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Affiliation(s)
- Marina Maria Bellet
- Department of Experimental Medicine, University of Perugia, 06132, Perugia, Italy
| | - Stefania Pieroni
- Department of Experimental Medicine, University of Perugia, 06132, Perugia, Italy
| | - Marilena Castelli
- Department of Experimental Medicine, University of Perugia, 06132, Perugia, Italy
| | - Danilo Piobbico
- Department of Experimental Medicine, University of Perugia, 06132, Perugia, Italy
| | - Francesca Fallarino
- Department of Experimental Medicine, University of Perugia, 06132, Perugia, Italy
| | - Luigina Romani
- Department of Experimental Medicine, University of Perugia, 06132, Perugia, Italy
| | | | - Giuseppe Servillo
- Department of Experimental Medicine, University of Perugia, 06132, Perugia, Italy.
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5
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Cortez MA, Masrorpour F, Ivan C, Zhang J, Younes AI, Lu Y, Estecio MR, Barsoumian HB, Menon H, Caetano MDS, Ramapriyan R, Schoenhals JE, Wang X, Skoulidis F, Wasley MD, Calin G, Hwu P, Welsh JW. Bone morphogenetic protein 7 promotes resistance to immunotherapy. Nat Commun 2020; 11:4840. [PMID: 32973129 PMCID: PMC7519103 DOI: 10.1038/s41467-020-18617-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 08/26/2020] [Indexed: 11/24/2022] Open
Abstract
Immunotherapies revolutionized cancer treatment by harnessing the immune system to target cancer cells. However, most patients are resistant to immunotherapies and the mechanisms underlying this resistant is still poorly understood. Here, we report that overexpression of BMP7, a member of the TGFB superfamily, represents a mechanism for resistance to anti-PD1 therapy in preclinical models and in patients with disease progression while on immunotherapies. BMP7 secreted by tumor cells acts on macrophages and CD4+ T cells in the tumor microenvironment, inhibiting MAPK14 expression and impairing pro-inflammatory responses. Knockdown of BMP7 or its neutralization via follistatin in combination with anti-PD1 re-sensitizes resistant tumors to immunotherapies. Thus, we identify the BMP7 signaling pathway as a potential immunotherapeutic target in cancer. The mechanisms underlying resistance to immunotherapy are still poorly understood. Here, the authors show that BMP7, a molecule part of the TGF-beta superfamily, suppresses proinflammatory antitumor responses and may represent a target for overcoming resistance to PD1 inhibitors.
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Affiliation(s)
- Maria Angelica Cortez
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Fatemeh Masrorpour
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Cristina Ivan
- Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jie Zhang
- Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ahmed I Younes
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yue Lu
- Epigenetic and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Marcos R Estecio
- Epigenetic and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hampartsoum B Barsoumian
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Hari Menon
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mauricio da Silva Caetano
- Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rishab Ramapriyan
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jonathan E Schoenhals
- Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xiaohong Wang
- Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ferdinandos Skoulidis
- Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mark D Wasley
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - George Calin
- Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Patrick Hwu
- Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - James W Welsh
- Departments of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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6
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Zhang J, Wang Y, Li SQ, Fang L, Wang XZ, Li J, Zhang HB, Huang B, Xu YM, Yang WM, Lin J, Min QH, Liao ZH, Wu Y, Liu J. Correction of Bcl-x splicing improves responses to imatinib in chronic myeloid leukaemia cells and mouse models. Br J Haematol 2020; 189:1141-1150. [PMID: 32189339 DOI: 10.1111/bjh.16472] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 12/16/2019] [Indexed: 01/25/2023]
Abstract
Imatinib mesylate (IM) resistance has become a major clinical problem for chronic myeloid leukaemia (CML). It is known that Bcl-x splicing is deregulated and is involved in multiple malignant cancer initiation and chemotherapy resistance, including CML. The aim of the present study was to correct the abnormal splicing of Bcl-x in CML and investigate the subsequent malignant phenotype changes, especially response to IM. The aberrant Bcl-x splicing in CML cells was effectively restored using vivo-Morpholino Antisense Oligomer (vMO). CCK-8 cell viability assay and flow cytometry showed that restoring of Bcl-x splicing increases IM-induced growth inhibition and apoptosis of K562 cells. Moreover, a more significant similar phenomenon was observed in imatinib-resistant CML cell lines K562/G01. Finally, establishment of CML xenograft model had also proved that correcting Bcl-x splicing in vivo can also enhance the anti-tumor effect of IM. Our findings suggest that vMO co-operating with IM can effectively increase the sensitivity of CML cells to IM both in vitro and in vivo, and Bcl-x splicing could become good candidates for chemotherapy-sensitized target in IM-resistant CML.
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Affiliation(s)
- Jing Zhang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Yan Wang
- Department of Hematology, Affiliated Hospital of Guizhou Medical University, Guiyang, China.,Key Laboratory of Hematological Disease Diagnostic, Treat Centre of Guizhou Province, Guiyang, China.,Department of Hematology, Guizhou Provincial Laboratory of Hematopoietic Stem Cell Transplantation Center, Guiyang, China
| | - Shu-Qi Li
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Le Fang
- Department of Clinical Laboratory, 521 Hospital of Ordnance Industry, Xi'an, China
| | - Xiao-Zhong Wang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Jing Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hai-Bin Zhang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Bo Huang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Yan-Mei Xu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Wei-Ming Yang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Jin Lin
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Qing-Hua Min
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
| | - Zhi-Hua Liao
- Department of Clinical Laboratory, Jiangxi Maternal and Child Health Care Hospital, Nanchang, China
| | - Yan Wu
- Center for Disease Control and Prevention of Donghu District, Nanchang, China
| | - Jing Liu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Key Laboratory of Laboratory Medicine, Nanchang, China
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7
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System Prediction and Validation of TCM for Chronic Myeloid Leukemia Treatment from the Perspective of Low-Toxicity Chemotherapy: A Stilbene α-Viniferin Has a Proapoptotic Effect on K562 Cells via the Mitochondrial Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:1986962. [PMID: 32104190 PMCID: PMC7035520 DOI: 10.1155/2020/1986962] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 01/08/2020] [Indexed: 11/17/2022]
Abstract
Objective In traditional Chinese medicine (TCM), chronic myeloid leukemia (CML) has been attributed to “poisoned bone marrow,” which is viewed as a loss of Qi or blood, a deficiency in Yin or Yang that causes a complex imbalance between cell growth and death. Malignant myeloid progenitor cells display excessive growth that is difficult to control without toxicity. More than 60 herbs in TCM have shown efficacy against CML. However, the key molecules and mechanisms involved in the holistic-level characterization, as well as the effective target associations, are still unknown. Methods The present study employed a computational approach with filtering potential compounds via admetSAR, systems biology-based functional data prediction, and biochemical and molecular biological validation. Results We generated 118 bioactive compounds from 11 herbs within four dialectical therapy groups that are most commonly used to treat CML and predicted 141 potential targets. The stilbene resveratrol and its derivatives were found to be highly related to these targets. Among them, α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies. In vitro, experimental data showed a nonnecrotic growth limitation of K562 cells caused by α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies. μg·mL−1 at 24 h. Finally, we validated the chemotherapeutic effect of α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies. Conclusions Our work sheds light on the mechanism of the efficacy of the stilbene α-viniferin in TCM for the prevention of CML. This work also predicts and validates targets in the mitochondrial signaling pathway, providing a novel strategy for CML treatment.α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies.
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Lu Z, Chang W, Meng S, Xu X, Xie J, Guo F, Yang Y, Qiu H, Liu L. Mesenchymal stem cells induce dendritic cell immune tolerance via paracrine hepatocyte growth factor to alleviate acute lung injury. Stem Cell Res Ther 2019; 10:372. [PMID: 31801626 PMCID: PMC6894226 DOI: 10.1186/s13287-019-1488-2] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/28/2019] [Accepted: 11/05/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) have been shown to alleviate acute lung injury (ALI) via paracrine hepatocyte growth factor (HGF) and to induce the differentiation of dendritic cells (DCs) into tolerogenic dendritic cells (DCregs) and participate in the immune response. However, whether MSCs induce the production of DCregs by secreting HGF to alleviate early ALI remains unclear. We observed that the protective effect of mouse bone marrow-derived MSCs against lipopolysaccharide (LPS)-induced ALI was achieved by inducing mature DCs (mDCs) to differentiate into DCregs, and its mechanism is related to the activation of the HGF/Akt pathway. METHODS MSCs or MSCs with overexpression or knockdown of HGF were cocultured with DCs derived from mouse bone marrow using a Transwell system for 3 days. Moreover, we used MSCs or MSCs with overexpression or knockdown of HGF to treat LPS-induced ALI mice for 24 h. Flow cytometry was performed to measure the phagocytosis, accumulation, and maturation of DCs, as well as proliferation of T cells. Lung injury was estimated by lung wet weight to body weight ratio (LWW/BW) and histopathological analysis. Furthermore, we used the Akt inhibitor MK-2206 in a coculture system to elucidate the role of the HGF/Akt pathway in regulating the differentiation of DCs into regulatory DCs and relieving lung injury in early ALI mice. RESULTS Immature DCs (imDCs) were induced to mature after 24 h of LPS (50 ng/ml) stimulation. MSCs or HGF induced the differentiation of mDCs into regulatory DCs characterized by low expression of MHCII, CD86, and CD40 molecules, strong phagocytic function, and the ability to inhibit T cell proliferation. The effect of MSCs on DCregs was enhanced with the increase in HGF secretion and was weakened with the decrease in HGF secretion. DCregs induced by recombinant HGF were attenuated by the Akt inhibitor MK-2206. Lung DC aggregation and mDC ratio increased in LPS-induced ALI mice, while treatment with MSCs decreased lung DC aggregation and maturation and alleviated lung pathological injury. High expression of the HGF gene enhanced the above effect of MSCs, while decreased expression of HGF weakened the above effect of MSCs. CONCLUSIONS MSCs alleviate early ALI via paracrine HGF by inducing mDCs to differentiate into regulatory DCs. Furthermore, the mechanism of HGF-induced differentiation of mDCs into DCregs is related to the activation of the Akt pathway.
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Affiliation(s)
- Zhonghua Lu
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Wei Chang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Shanshan Meng
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Xiuping Xu
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Jianfeng Xie
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Fengmei Guo
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Yi Yang
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Haibo Qiu
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China
| | - Ling Liu
- Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, 87 Dingjia Bridge, Hunan Road, Gu Lou District, Nanjing, 210009, China.
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9
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Shao A, Tu S, Lu J, Zhang J. Crosstalk between stem cell and spinal cord injury: pathophysiology and treatment strategies. Stem Cell Res Ther 2019; 10:238. [PMID: 31387621 PMCID: PMC6683526 DOI: 10.1186/s13287-019-1357-z] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The injured spinal cord is difficult to repair and regenerate. Traditional treatments are not effective. Stem cells are a type of cells that have the potential to differentiate into various cells, including neurons. They exert a therapeutic effect by safely and effectively differentiating into neurons or replacing damaged cells, secreting neurotrophic factors, and inhibiting the inflammatory response. Many types of stem cells have been used for transplantation, and each has its own advantages and disadvantages. This review discusses the possible mechanisms of stem cell therapy for spinal cord injury, and the types of stem cells commonly used in experiments, to provide a reference for basic and clinical research on stem cell therapy for spinal cord injury.
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Affiliation(s)
- Anwen Shao
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
| | - Sheng Tu
- Department of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Jianan Lu
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Jianmin Zhang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.,Brain Research Institute, Zhejiang University, Hangzhou, 310003, China.,Collaborative Innovation Center for Brain Science, Zhejiang University, Hangzhou, 310003, China
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MiR-27a/b Regulates Liver Regeneration by Posttranscriptional Modification of Tmub1. Dig Dis Sci 2018; 63:2362-2372. [PMID: 29777440 DOI: 10.1007/s10620-018-5113-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 05/04/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND Transmembrane and ubiquitin-like domain-containing 1 protein (Tmub1) negatively regulates liver regeneration. However, whether this regulation involves posttranscriptional modification of Tmub1 expression is unknown. AIM The aim of the study was to investigate whether microRNA (miR)-27a/b regulates posttranscriptional modification of Tmub1 and cell proliferation during liver regeneration. METHODS Tmub1 mRNA 3'-untranslated region (UTR) sequences were analyzed using online software. A luciferase assay was used to verify the relationship between miR-27a/b and the 3'-UTR of Tmub1. Rat partial hepatectomy models were used to investigate miR-27a/b and Tmub1 levels after partial hepatectomy. MiR-27a/b expression was down- and up-regulated with mimics and inhibitors, respectively, to observe the effects of miR-27a/b on Tmub1 expression. Quantitative RT-PCR and Western blot analyses were used to measure miR-27a/b and Tmub1 expression. Hepatocyte proliferation was measured using the CCK8 method for BRL-3A liver cells and proliferating cell nuclear antigen and histone H3 phosphorylation in the regenerating liver. RESULTS A potential binding site of miR-27a/b was found in the 3'-UTR sequence of Tmub1. Our luciferase assay confirmed that the Tmub1 mRNA 3'-UTR was the target of miR-27a/b. We observed a temporal correlation between miR-27a/b and Tmub1 expression during liver regeneration. MiR-27a/b down-regulated Tmub1 expression both in vivo and in vitro. MiR-27a/b regulated hepatocyte proliferation during liver regeneration. CONCLUSION MiR-27a/b regulates hepatocyte proliferation by controlling posttranscriptional modification of Tmub1 during liver regeneration.
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Lan X, Fu H, Li G, Zeng W, Lin X, Zhu Y, Liu M, Chen P. TMUB1 Inhibits BRL-3A Hepatocyte Proliferation by Interfering with the Binding of CAML to Cyclophilin B through its TM1 Hydrophobic Domain. Sci Rep 2018; 8:9917. [PMID: 29967478 PMCID: PMC6028644 DOI: 10.1038/s41598-018-28339-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 06/15/2018] [Indexed: 02/06/2023] Open
Abstract
Transmembrane and ubiquitin-like domain-containing 1 (Tmub1) encodes a protein (TMUB1) containing an ubiquitin-like domain and plays a negative regulatory role during hepatocyte proliferation, but its mechanism in this process is still unknown. Here, TMUB1 interfered with the binding of calcium-modulating cyclophilin ligand (CAML) to cyclophilin B, which may represent a key role in the negative regulatory process of TMUB1 in hepatocyte proliferation. Co-immunoprecipitation assays in rat BRL-3A cells confirmed the interaction between TMUB1 and CAML; significant regulation of the influx of Ca2+ ([Ca2+]i) and hepatocyte proliferation occurred following TMUB1 overexpression or knockout. Deletion of the TM1 hydrophobic domain of TMUB1 completely abolished this interaction and led to loss of TMUB1's regulatory effects on cytological behavior. Furthermore, overexpression of TMUB1 completely abolished the interaction between CAML and its downstream protein cyclophilin B, which can act upstream of calcineurin by increasing [Ca2+]i during cell proliferation. Taken together, our results indicate that TMUB1 regulates BRL-3A hepatocyte proliferation by interacting with CAML and further interferes with the binding of CAML to cyclophilin B to decrease cellular [Ca2+]i.
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Affiliation(s)
- Xiang Lan
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China
| | - Hangwei Fu
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China
| | - Guangyao Li
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China
| | - Wei Zeng
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China
| | - Xia Lin
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China
| | - Yuanxin Zhu
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China
| | - Menggang Liu
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China.
| | - Ping Chen
- Department of Hepatobiliary Surgery, The Third Affiliated Hospital, The Third Military Medical University (Army medical university), Chongqing, China.
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12
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Narasimhan A, Greiner R, Bathe OF, Baracos V, Damaraju S. Differentially expressed alternatively spliced genes in skeletal muscle from cancer patients with cachexia. J Cachexia Sarcopenia Muscle 2018; 9:60-70. [PMID: 28984045 PMCID: PMC5803615 DOI: 10.1002/jcsm.12235] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/20/2017] [Accepted: 08/03/2017] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Alternative splicing (AS) is a post-transcriptional gene regulatory mechanism that contributes to proteome diversity. Aberrant splicing mechanisms contribute to various cancers and muscle-related conditions such as Duchenne muscular dystrophy. However, dysregulation of AS in cancer cachexia (CC) remains unexplored. Our objectives were (i) to profile alternatively spliced genes (ASGs) on a genome-wide scale and (ii) to identify differentially expressed alternatively spliced genes (DASGs) associated with CC. METHODS Rectus abdominis muscle biopsies obtained from cancer patients were stratified into cachectic cases (n = 21, classified based on International consensus diagnostic framework for CC) and non-cachectic controls (n = 19, weight stable cancer patients). Human transcriptome array 2.0 was used for profiling ASGs using the total RNA isolated from muscle biopsies. Representative DASG signatures were validated using semi-quantitative RT-PCR. RESULTS We identified 8960 ASGs, of which 922 DASGs (772 up-regulated and 150 down-regulated) were identified at ≥1.4 fold-change and P < 0.05. Representative DASGs validated by semi-quantitative RT-PCR confirmed the primary findings from the human transcriptome arrays. Identified DASGs were associated with myogenesis, adipogenesis, protein ubiquitination, and inflammation. Up to 10% of the DASGs exhibited cassette exon (exon included or skipped) as a predominant form of AS event. We also observed other forms of AS events such as intron retention, alternate promoters. CONCLUSIONS Overall, we have, for the first time, conducted global profiling of muscle tissue to identify DASGs associated with CC. The mechanistic roles of the identified DASGs in CC pathophysiology using model systems is warranted, as well as replication of findings in independent cohorts.
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Affiliation(s)
- Ashok Narasimhan
- Department of Laboratory Medicine and PathologyUniversity of AlbertaEdmontonABT6G 1Z2Canada
| | - Russell Greiner
- Department of Computing SciencesUniversity of AlbertaEdmontonABT6G 2E8Canada
| | - Oliver F. Bathe
- Departments of Surgery and OncologyUniversity of CalgaryCalgaryABT2N 1N4Canada
| | - Vickie Baracos
- Department of OncologyUniversity of AlbertaEdmontonABT6G 1Z2Canada
- Cross Cancer InstituteEdmontonABT6G 1Z2Canada
| | - Sambasivarao Damaraju
- Department of Laboratory Medicine and PathologyUniversity of AlbertaEdmontonABT6G 1Z2Canada
- Cross Cancer InstituteEdmontonABT6G 1Z2Canada
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13
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Imbalance of Th17/Tregs in rats with smoke inhalation-induced acute lung injury. Sci Rep 2016; 6:21348. [PMID: 26884314 PMCID: PMC4756332 DOI: 10.1038/srep21348] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 01/21/2016] [Indexed: 12/24/2022] Open
Abstract
T helper (Th) 17 cells and CD4+ CD25+ regulatory T (Treg) cells are supposed to be critically involved in regulating autoimmune and inflammatory diseases. The aim of this study was to investigate the Th17/Treg pattern in rats with gunpowder smog-induced acute lung injury. Wistar rats were equally randomized to three groups: normal control group, ALI 6 h group (smoke inhalation for 6 h) and ALI 24 h group (smoke inhalation for 24 h). We observed changes in cell counting in bronchoalveolar lavage fluid (BALF), alveolar-capillary membrane permeability and lung tissue pathology. Moreover, rats in ALI 6 h and ALI 24 h group showed increased expression of Th17 cell and related cytokines (IL-17 A, IL-6, TGF-β and IL-23). Meanwhile, Treg prevalence and related cytokines (IL-10, IL-2 and IL-35) were decreased. Consequently, the ratio of Th17/Treg was higher after smoke inhalation. Additionally, Th1 cell decreased while Th2 cell increased at 6 h and 24 h after smoke inhalation. In conclusion, Th17/Treg imbalance exists in rats with smoke inhalation-induced acute lung injury, suggesting its potential role in the pathogenesis of this disease.
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14
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Yu ZX, Ji MS, Yan J, Cai Y, Liu J, Yang HF, Li Y, Jin ZC, Zheng JX. The ratio of Th17/Treg cells as a risk indicator in early acute respiratory distress syndrome. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2015; 19:82. [PMID: 25887535 PMCID: PMC4355972 DOI: 10.1186/s13054-015-0811-2] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 02/13/2015] [Indexed: 01/07/2023]
Abstract
Introduction Recent studies have revealed that lung inflammation mediated by CD4+ T cells may contribute to the pathogenesis of acute respiratory distress syndrome (ARDS). The imbalance between CD4 + CD25 + Foxp3 + regulatory T (Treg) cells and T helper (Th)17 cells has been found in a number of different inflammation and autoimmune diseases, while the role of the Th17/Treg balance in ARDS remains largely unknown. The aim of this study was to investigate the Th17/Treg pattern and its impact on disease severity and outcomes in patients with ARDS. Methods This prospective, observational study enrolled 79 patients who fulfilled the Berlin definition of ARDS and 26 age- and sex-matched healthy controls. Circulation Th17 and Treg cell frequencies were analyzed by flow cytometry, and the expressions of Th17- and Treg-related cytokines in serum were measured by enzyme-linked immunosorbent assay (ELISA). Acute Physiologic and Chronic Health Evaluation (APACHE) II score, Sequential Organ Failure Assessment (SOFA) score, and the Lung Injury Score were also calculated at enrollment. Results Within 24 hours after the onset of ARDS, the changes of peripheral circulating Th17 and Treg cell frequencies gradually increased from mild to severe ARDS. Th17/Treg ratio was positively correlated with APACHE II score, SOFA score, and Lung Injury Score, while negatively correlated with PaO2/FiO2. The areas under the receiver operating characteristic (AUC) curves of Th17/Treg ratio for predicting 28-day mortality in ARDS patients was higher than that of APACHE II score, SOFA score, Lung injury score, as well as PaO2/FiO2. Using a Th17/Treg ratio cutoff value of >0.79 to determine 28-day mortality, the sensitivity was 87.5% with 68.1% specificity. Multivariate logistic regression showed Th17/Treg ratio >0.79 (odds ratio = 8.68, P = 0.002) was the independent predictor for 28-day mortality in patients with ARDS. Finally, cumulative survival rates at 28-day follow-up also differed significantly between patients with Th17/Treg ratio >0.79 and ≤0.79 (P <0.001). Conclusions The Th17/Treg imbalance favoring a Th17 shift represents a potential therapeutic target to alleviate lung injury and a novel risk indicator in patients with early ARDS.
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Affiliation(s)
- Zhi-xin Yu
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Mu-sen Ji
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Jun Yan
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Yan Cai
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Jing Liu
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Hong-feng Yang
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Yong Li
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Zhao-chen Jin
- Department of Critical Care Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212002, China.
| | - Jin-Xu Zheng
- Department of Respiratory Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China.
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15
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Silva-Filho JL, Souza MC, Henriques MG, Morrot A, Savino W, Caruso-Neves C, Pinheiro AAS. Renin-angiotensin system contributes to naive T-cell migration in vivo. Arch Biochem Biophys 2015; 573:1-13. [PMID: 25752953 DOI: 10.1016/j.abb.2015.02.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 02/04/2015] [Accepted: 02/28/2015] [Indexed: 01/11/2023]
Abstract
Angiotensin II (Ang II) plays an important role in the regulation of the T-cell response during inflammation. However, the cellular mechanisms underlying the regulation of lymphocytes under physiologic conditions have not yet been studied. Here, we tested the influence of Ang II on T-cell migration using T cells from BALB/c mice. The results obtained in vivo showed that when Ang II production or the AT1 receptor were blocked, T-cell counts were enhanced in blood but decreased in the spleen. The significance of these effects was confirmed by observing that these cells migrate, through fibronectin to Ang II via the AT1 receptor. We also observed a gradient of Ang II from peripheral blood to the spleen, which explains its chemotactic effect on this organ. The following cellular mechanisms were identified to mediate the Ang II effect: upregulation of the chemokine receptor CCR9; upregulation of the adhesion molecule CD62L; increased production of the chemokines CCL19 and CCL25 in the spleen. These results indicate that the higher levels of Ang II in the spleen and AT1 receptor activation contribute to migration of naive T cells to the spleen, which expands our understanding on how the Ang II/AT1 receptor axis contributes to adaptive immunity.
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Affiliation(s)
- J L Silva-Filho
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - M C Souza
- Instituto de Tecnologia em Fármacos, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - M G Henriques
- Instituto de Tecnologia em Fármacos, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - A Morrot
- Instituto de Microbiologia Professor Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - W Savino
- Departamento de Imunologia, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - C Caruso-Neves
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Biologia e Bioimagem, Conselho Nacional de Desenvolvimento Científico e Tecnológico/MCT, Brazil
| | - A A S Pinheiro
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Instituto Nacional para Pesquisa Translacional em Saúde e Ambiente na Região Amazônica, Conselho Nacional de Desenvolvimento Científico e Tecnológico/MCT, Brazil.
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Mandal AK, Ghosh D, Sarkar S, Ghosh A, Swarnakar S, Das N. Nanocapsulated quercetin downregulates rat hepatic MMP-13 and controls diethylnitrosamine-induced carcinoma. Nanomedicine (Lond) 2014; 9:2323-37. [PMID: 24593002 DOI: 10.2217/nnm.14.11] [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] [Indexed: 12/25/2022] Open
Abstract
AIMS The aims of our work were to investigate the controlling role and the efficacy of nanocapsulated quercetin drug delivery system on the decrement of inflammatory mediators such as MMP-13 in diethyl nitrosamine (DEN)-induced hepatocarcinogenesis. MATERIALS & METHODS Hepatocellular carcinoma was developed in the Swiss albino rats by the exposure of DEN. DEN administration caused the generation of reactive oxygen species, upregulation of TNF-α, IL-6, activation of MMP-13, severe oxidative damage, hyperplastic nodules with preneoplastic lesions and the histopathological changes in rat liver. RESULTS & CONCLUSION Nanocapsulated quercetin treatment restricted all alterations in DEN-mediated development of hepatocarcinogenesis. Therefore, it may be concluded that nanocapsulated quercetin may be accepted as a potent therapeutic formulation in preventing DEN-mediated hepatocarcinogenesis.
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Affiliation(s)
- Ardhendu Kumar Mandal
- Drug Development/Diagnostics & Biotechnology Division, Indian Institute of Chemical Biology, 4, Raja SC Mullick Road, Jadavpur, Kolkata - 700032, India
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Srinivasan S, Patil AH, Verma M, Bingham JL, Srivatsan R. Genome-wide Profiling of RNA splicing in prostate tumor from RNA-seq data using virtual microarrays. J Clin Bioinforma 2012. [PMID: 23181285 PMCID: PMC3533750 DOI: 10.1186/2043-9113-2-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background Second generation RNA sequencing technology (RNA-seq) offers the potential to interrogate genome-wide differential RNA splicing in cancer. However, since short RNA reads spanning spliced junctions cannot be mapped contiguously onto to the chromosomes, there is a need for methods to profile splicing from RNA-seq data. Before the invent of RNA-seq technologies, microarrays containing probe sequences representing exon-exon junctions of known genes have been used to hybridize cellular RNAs for measuring context-specific differential splicing. Here, we extend this approach to detect tumor-specific splicing in prostate cancer from a RNA-seq dataset. Method A database, SPEventH, representing probe sequences of under a million non-redundant splice events in human is created with exon-exon junctions of optimized length for use as virtual microarray. SPEventH is used to map tens of millions of reads from matched tumor-normal samples from ten individuals with prostate cancer. Differential counts of reads mapped to each event from tumor and matched normal is used to identify statistically significant tumor-specific splice events in prostate. Results We find sixty-one (61) splice events that are differentially expressed with a p-value of less than 0.0001 and a fold change of greater than 1.5 in prostate tumor compared to the respective matched normal samples. Interestingly, the only evidence, EST (BF372485), in the public database for one of the tumor-specific splice event joining one of the intron in KLK3 gene to an intron in KLK2, is also derived from prostate tumor-tissue. Also, the 765 events with a p-value of less than 0.001 is shown to cluster all twenty samples in a context-specific fashion with few exceptions stemming from low coverage of samples. Conclusions We demonstrate that virtual microarray experiments using a non-redundant database of splice events in human is both efficient and sensitive way to profile genome-wide splicing in biological samples and to detect tumor-specific splicing signatures in datasets from RNA-seq technologies. The signature from the large number of splice events that could cluster tumor and matched-normal samples into two tight separate clusters, suggests that differential splicing is yet another RNA phenotype, alongside gene expression and SNPs, that can be exploited for tumor stratification.
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Affiliation(s)
- Subhashini Srinivasan
- Institute of Bioinformatics and Applied Biotechnology, Biotech Park, Electronic City Phase I, Bangalore, 560100, India.
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Huang D, Lu H, Liu H, Yao K, Sun A, Zou Y, Ge J. Losartan attenuates human monocyte-derived dendritic cell immune maturation via downregulation of lectin-like oxidized low-density lipoprotein receptor-1. J Cardiovasc Pharmacol 2012; 60:133-9. [PMID: 22549450 DOI: 10.1097/fjc.0b013e318258f336] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The angiotensin II receptor-1 blockers have generally been shown to have antiatherogenic effects, and dendritic cells (DCs) are the most efficient antigen presenting cells that play an active role in the development of atherosclerosis through inflammatory-immune responses. Here, we tested the hypothesis that the antiatherogenic effect of losartan, the first angiotensin II receptor-1 blockers, might partly be mediated by attenuating DCs maturation. In this study, we showed that oxidized low-density lipoprotein (oxLDL) and angiotensin II (Ang II) could induce the maturation of human monocyte-derived DCs, stimulate CD83, HLA-DR expressions and IL-12, interferon-gamma secretions and increase the capacity of DCs to stimulate T-cell proliferation, which were suppressed by losartan. OxLDL could promote the autocrine secretion of Ang II by DCs and upregulate the expressions of 3 scavenger receptors SR-A, CD36, and LOX-1. Losartan reduced oxLDL-induced LOX-1 expression but not SR-A and CD36 expressions. Ang II could only upregulate the LOX-1 expression, which was reduced by losartan. OxLDL- and Ang II-induced upregulation of CD83 and secretion of IL-12 were all attenuated by LOX-1 neutralizing antibody. In conclusion, losartan could attenuate the oxLDL- and Ang II-induced immune maturation of human monocyte-derived DCs partly through downregulation of the LOX-1 expression.
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Affiliation(s)
- Dong Huang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
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