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Barabutis N, Akhter MS, Kubra KT, Jackson K. Growth Hormone-Releasing Hormone in Endothelial Inflammation. Endocrinology 2022; 164:6887354. [PMID: 36503995 PMCID: PMC9923806 DOI: 10.1210/endocr/bqac209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022]
Abstract
The discovery of hypothalamic hormones propelled exciting advances in pharmacotherapy and improved life quality worldwide. Growth hormone-releasing hormone (GHRH) is a crucial element in homeostasis maintenance, and regulates the release of growth hormone from the anterior pituitary gland. Accumulating evidence suggests that this neuropeptide can also promote malignancies, as well as inflammation. Our review is focused on the role of that 44 - amino acid peptide (GHRH) and its antagonists in inflammation and vascular function, summarizing recent findings in the corresponding field. Preclinical studies demonstrate the protective role of GHRH antagonists against endothelial barrier dysfunction, suggesting that the development of those peptides may lead to new therapies against pathologies related to vascular remodeling (eg, sepsis, acute respiratory distress syndrome). Targeted therapies for those diseases do not exist.
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Affiliation(s)
- Nektarios Barabutis
- Correspondence: Nektarios Barabutis, MSc, PhD, School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, 1800 Bienville Dr, Monroe, LA 71201, USA.
| | | | - Khadeja-Tul Kubra
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA, USA
| | - Keith Jackson
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA, USA
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New brefeldin A-cinnamic acid ester derivatives as potential antitumor agents: Design, synthesis and biological evaluation. Eur J Med Chem 2022; 240:114598. [PMID: 35849940 DOI: 10.1016/j.ejmech.2022.114598] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/23/2022] [Accepted: 07/06/2022] [Indexed: 11/23/2022]
Abstract
Hepatocellular carcinoma (HCC) is the most common primary liver malignancy and ranks third in mortality rate worldwide. Brefeldin A (BFA, 1), a natural Arf1 inhibitor, qualifies extremely superior antitumor activity against HCC while its low aqueous solubility, poor bioavailability, and high toxicity have greatly hindered its translation to the clinic. Herein, a series of BFA-cinnamic acid ester derivatives was rationally designed and synthesized via introducing active cinnamic acid and its analogues into the structure of 1. Their in vitro cytotoxic activities on five cancer cell lines, including HepG2, BEL-7402, HeLa, Eca-109 and PANC-1, were evaluated using MTT assay. As expected, favorable cytotoxic activity was observed on majority of the mono-substituted derivatives. Especially, the most potent brefeldin A 4-O-(4)-dimethylaminocinnamate (CHNQD-01269, 33) with improved aqueous solubility, demonstrated the strong cytotoxic activity against HepG2 and BEL-7402 cell lines with IC50 values of 0.29 and 0.84 μM, respectively. More importantly, 33 performed low toxicity on normal liver cell line L-02 with the selectivity index (SI) of 9.69, which was more than 17-fold higher than that of 1. Results from mechanistic studies represented that 33 blocked the cell cycle in the G1 phase, and induced apoptosis via elevating reactive oxygen species (ROS) production and increasing expression of apoptosis-related proteins of HepG2 cells. Docking experiment also suggested 33 a promising Arf1 inhibitor, which was confirmed by the cellular thermal shift assay that 33 displayed a significant effect on the stability of Arf1 protein. Furthermore, 33 possessed high safety profile (MTD >100 mg/kg, ip) and favorable pharmacokinetic properties. Notably, the superior antiproliferative activity was verified in HepG2 tumor-bearing xenograft model in which 33 markedly suppressed the tumor growth (TGI = 46.17%) in nude mice at a dose of 10 mg/kg once a day for 16 d. The present study provided evidence of exploiting this series of highly efficacious derivatives, especially 33, for the treatment of HCC.
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Dutta P, Sultana S, Dey R, Bishayi B. Regulation of Staphylococcus aureus-induced CXCR1 expression via inhibition of receptor mobilization and receptor shedding during dual receptor (TNFR1 and IL-1R) neutralization. Immunol Res 2020; 67:241-260. [PMID: 31290001 DOI: 10.1007/s12026-019-09083-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Our earlier studies proposed a radically new idea suggesting interdependency between TNF-α/TNFR1 and IL-1β/IL-1R pathways in modulation of Staphylococcus aureus-induced CXCL8/CXCR1 axis. However, the effects of inhibition of cytokine receptor mobilization at intracellular level and surface TNFR1 and IL-1R shedding on S. aureus-induced CXCR1 expression have not been studied so far in peritoneal macrophages. This study aimed to investigate the role of inhibition of receptor mobilization from the intracellular pool (using brefeldin A) and surface receptor shedding (using TAPI-1) on CXCR1 expression during dual receptor (TNFR1 plus IL-1R) neutralization in peritoneal macrophages isolated from wild-type Swiss Albino mice. Release of superoxide anion, nitric oxide, and hydrogen peroxide was measured and cytokine production was done by ELISA. Expression of surface receptors (TNFR1, IL-1R, and CXCR1) and inflammatory mediators was studied by Western blot. It was observed that S. aureus-infected macrophages showed elevated ROS production, secretion of TNF-α, IL-1β, and CXCL8, along with increased expression of surface receptors (TNFR1, IL-1R, and CXCR1), and inflammatory markers (iNOS and COX-2) compared with control or treated groups (p < 0.05). However, prior treatment of macrophages with BFA or TAPI-1 in the presence of anti-TNFR1 antibody and IRAP during S. aureus infection showed significant reduction of all these parameters (p < 0.05). We can conclude that targeting of TNFR1 and IL-1R (with major focus on surface expression study) either through blockage of intracellular receptor trafficking pathway or via surface receptor shedding diminishes TNFR1/IL-1R interaction and consequently downregulates CXCR1 expression along with inflammatory signalling pathways during bacterial infections.
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Affiliation(s)
- Puja Dutta
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta, West Bengal, 700009, India
| | - Sahin Sultana
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta, West Bengal, 700009, India
| | - Rajen Dey
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta, West Bengal, 700009, India
| | - Biswadev Bishayi
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta, West Bengal, 700009, India.
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Luchsinger C, Aguilar M, Burgos PV, Ehrenfeld P, Mardones GA. Functional disruption of the Golgi apparatus protein ARF1 sensitizes MDA-MB-231 breast cancer cells to the antitumor drugs Actinomycin D and Vinblastine through ERK and AKT signaling. PLoS One 2018; 13:e0195401. [PMID: 29614107 PMCID: PMC5882166 DOI: 10.1371/journal.pone.0195401] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 03/21/2018] [Indexed: 12/26/2022] Open
Abstract
Increasing evidence indicates that the Golgi apparatus plays active roles in cancer, but a comprehensive understanding of its functions in the oncogenic transformation has not yet emerged. At the same time, the Golgi is becoming well recognized as a hub that integrates its functions of protein and lipid biosynthesis to signal transduction for cell proliferation and migration in cancer cells. Nevertheless, the active function of the Golgi apparatus in cancer cells has not been fully evaluated as a target for combined treatment. Here, we analyzed the effect of perturbing the Golgi apparatus on the sensitivity of the MDA-MB-231 breast cancer cell line to the drugs Actinomycin D and Vinblastine. We disrupted the function of ARF1, a protein necessary for the homeostasis of the Golgi apparatus. We found that the expression of the ARF1-Q71L mutant increased the sensitivity of MDA-MB-231 cells to both Actinomycin D and Vinblastine, resulting in decreased cell proliferation and cell migration, as well as in increased apoptosis. Likewise, the combined treatment of cells with Actinomycin D or Vinblastine and Brefeldin A or Golgicide A, two disrupting agents of the ARF1 function, resulted in similar effects on cell proliferation, cell migration and apoptosis. Interestingly, each combined treatment had distinct effects on ERK1/2 and AKT signaling, as indicated by the decreased levels of either phospho-ERK1/2 or phospho-AKT. Our results suggest that disruption of Golgi function could be used as a strategy for the sensitization of cancer cells to chemotherapy.
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Affiliation(s)
- Charlotte Luchsinger
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
| | - Marcelo Aguilar
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
| | - Patricia V. Burgos
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
- Center for Cell Biology and Biomedicine (CEBICEM), School of Medicine and Science, Universidad San Sebastián, Santiago, Chile
- Center for Aging and Regeneration (CARE), Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pamela Ehrenfeld
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
- Department of Anatomy, Histology and Pathology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Gonzalo A. Mardones
- Department of Physiology, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
- Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
- Center for Cell Biology and Biomedicine (CEBICEM), School of Medicine and Science, Universidad San Sebastián, Santiago, Chile
- * E-mail:
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Lin N, Zhu Y, Fan R, Xiong M. A quadratically regularized functional canonical correlation analysis for identifying the global structure of pleiotropy with NGS data. PLoS Comput Biol 2017; 13:e1005788. [PMID: 29040274 PMCID: PMC5659802 DOI: 10.1371/journal.pcbi.1005788] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 10/27/2017] [Accepted: 09/21/2017] [Indexed: 01/12/2023] Open
Abstract
Investigating the pleiotropic effects of genetic variants can increase statistical power, provide important information to achieve deep understanding of the complex genetic structures of disease, and offer powerful tools for designing effective treatments with fewer side effects. However, the current multiple phenotype association analysis paradigm lacks breadth (number of phenotypes and genetic variants jointly analyzed at the same time) and depth (hierarchical structure of phenotype and genotypes). A key issue for high dimensional pleiotropic analysis is to effectively extract informative internal representation and features from high dimensional genotype and phenotype data. To explore correlation information of genetic variants, effectively reduce data dimensions, and overcome critical barriers in advancing the development of novel statistical methods and computational algorithms for genetic pleiotropic analysis, we proposed a new statistic method referred to as a quadratically regularized functional CCA (QRFCCA) for association analysis which combines three approaches: (1) quadratically regularized matrix factorization, (2) functional data analysis and (3) canonical correlation analysis (CCA). Large-scale simulations show that the QRFCCA has a much higher power than that of the ten competing statistics while retaining the appropriate type 1 errors. To further evaluate performance, the QRFCCA and ten other statistics are applied to the whole genome sequencing dataset from the TwinsUK study. We identify a total of 79 genes with rare variants and 67 genes with common variants significantly associated with the 46 traits using QRFCCA. The results show that the QRFCCA substantially outperforms the ten other statistics.
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Affiliation(s)
- Nan Lin
- Department of Biostatistics and Data Science, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, United States of America
| | - Yun Zhu
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America
| | - Ruzong Fan
- Biostatistics and Bioinformatics Branch (BBB), Division of Intramural Population Health Research (DIPHR), Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States of America
| | - Momiao Xiong
- Department of Biostatistics and Data Science, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, United States of America
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Lee U, Kim SO, Hwang JA, Jang JH, Son S, Ryoo IJ, Ahn JS, Kim BY, Lee KH. The Fungal Metabolite Brefeldin A Inhibits Dvl2-Plk1-Dependent Primary Cilium Disassembly. Mol Cells 2017; 40:401-409. [PMID: 28614913 PMCID: PMC5523016 DOI: 10.14348/molcells.2017.0032] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/28/2017] [Accepted: 05/11/2017] [Indexed: 11/27/2022] Open
Abstract
The primary cilium is a non-motile microtubule-based organelle that protrudes from the surface of most human cells and works as a cellular antenna to accept extracellular signals. Primary cilia assemble from the basal body during the resting stage (G0 phase) and simultaneously disassemble with cell cycle re-entry. Defective control of assembly or disassembly causes diverse human diseases including ciliopathy and cancer. To identify the effective compounds for studying primary cilium disassembly, we have screened 297 natural compounds and identified 18 and 17 primary cilium assembly and disassembly inhibitors, respectively. Among them, the application of KY-0120, identified as Brefeldin A, disturbed Dvl2-Plk1-mediated cilium disassembly via repression of the interaction of CK1ɛ-Dvl2 and the expression of Plk1 mRNA. Therefore, our study may suggest useful compounds for studying the cellular mechanism of primary cilium disassembly to prevent ciliopathy and cancer.
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Affiliation(s)
- Uijeong Lee
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
- Department of Biomolecular Science, University of Science and Technology, Daejeon 34113,
Korea
| | - Sun-Ok Kim
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
| | - Jeong-Ah Hwang
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
- Research Institute of Medical Sciences, Department of Physiology, College of Medicine, Chungnam National University, Daejeon 34134,
Korea
| | - Jae-Hyuk Jang
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
- Department of Biomolecular Science, University of Science and Technology, Daejeon 34113,
Korea
| | - Sangkeun Son
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
- Department of Biomolecular Science, University of Science and Technology, Daejeon 34113,
Korea
| | - In-Ja Ryoo
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
| | - Jong Seog Ahn
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
- Department of Biomolecular Science, University of Science and Technology, Daejeon 34113,
Korea
| | - Bo Yeon Kim
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
- Department of Biomolecular Science, University of Science and Technology, Daejeon 34113,
Korea
| | - Kyung Ho Lee
- World Class Institute (WCI), Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Chungbuk 28116,
Korea
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