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Domińska K, Urbanek KA, Kowalska K, Habrowska-Górczyńska DE, Kozieł MJ, Ochędalski T, Piastowska-Ciesielska AW. The consequences of manipulating relaxin family peptide receptor 1 (RXFP1) level in ovarian cancer cells. Reprod Biol 2024; 24:100864. [PMID: 38640630 DOI: 10.1016/j.repbio.2024.100864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 04/21/2024]
Abstract
Deregulation of the relaxin family peptide system (RFPS) appears to increase the risk of range of cancers, including epithelial ovarian cancers (EOC). The present study examines the effect of relaxin family peptide receptor 1 (RXFP1) level on the biological properties of human epithelial ovarian adenocarcinoma cells (OVCAR4 and SKOV3). RXFP1 was downregulated (RXFP1↓) in the cells using the RXFP1 sgRNA CRISPR All-in-One Lentivirus set (pLenti-U6-sgRNA-SFFV-Cas9-2A-Puro), and upregulated (RXFP1↑) using the RXFP1 CRISPRa sgRNA Lentivector (pLenti-U6-sgRNA-PGK-Neo) kit, which activates the RXFP1 gene when paired with dCas9-SAM. The changes taking place during adhesion to extracellular matrix (ECM) proteins were assessed in multi-well plates coated with collagen, fibronectin, laminin and gelatin. Cellular viability was monitored based on mitochondrial metabolic activity (MTT Assay, Alamar Blue Assay) and adenosine triphosphate production (ATP Assay). The rate of cell proliferation was determined based on the percentage of Ki67 immunoreactive cells and the numbers of cells in particular cell-cycle phases. The mesenchymal-like (Boyden Chamber Assay) and amoeboid-like movements (Wound Healing Assay) of ovarian cancer cells were also analyzed after transfection. RXFP1 downregulation decreased the adhesion properties of ovarian cancer cells and increased the tendency for apoptosis under stressful conditions. In contrast, RXFP1 upregulation had pro-proliferative, pro-survival and promigratory effects. Our findings confirm that the relaxin-2/RXFP1 signaling pathway plays a role in the promotion of growth and progression of ovarian cancer.
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Affiliation(s)
- Kamila Domińska
- Medical University of Lodz, Department of Comparative Endocrinology, Zeligowskiego 7/9, 90-752 Lodz, Poland.
| | - Kinga Anna Urbanek
- Medical University of Lodz, Department of Cell Cultures and Genomic Analysis, Zeligowskiego 7/9, 90-752 Lodz, Poland
| | - Karolina Kowalska
- Medical University of Lodz, Department of Cell Cultures and Genomic Analysis, Zeligowskiego 7/9, 90-752 Lodz, Poland
| | | | - Marta Justyna Kozieł
- Medical University of Lodz, Department of Cell Cultures and Genomic Analysis, Zeligowskiego 7/9, 90-752 Lodz, Poland
| | - Tomasz Ochędalski
- Medical University of Lodz, Department of Comparative Endocrinology, Zeligowskiego 7/9, 90-752 Lodz, Poland
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2
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Sköld C, Corvigno S, Dahlstrand H, Enblad G, Mezheyeuski A, Sundström-Poromaa I, Stålberg K, Tolf A, Glimelius I, Koliadi A. Association between parity and pregnancy-associated tumor features in high-grade serous ovarian cancer. Cancer Causes Control 2024:10.1007/s10552-024-01876-2. [PMID: 38578428 DOI: 10.1007/s10552-024-01876-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/24/2024] [Indexed: 04/06/2024]
Abstract
PURPOSE High-grade serous ovarian cancer (HGSC) is the most common ovarian cancer subtype. Parity is an important risk-reducing factor, but the underlying mechanism behind the protective effect is unclear. Our aim was to study if the expression of hormones and proteins involved in pregnancy were affected by the woman's parity status, and if they may be associated with tumor stage and survival. METHODS We evaluated expression of progesterone receptor (PR), progesterone receptor membrane component 1 (PGRMC1), relaxin-2, and transforming growth factor beta 1 (TGFβ1) in tumor tissue from 92 women with HGSC parous (n = 73) and nulliparous (n = 19). Key findings were then evaluated in an independent expansion cohort of 49 patients. Survival rates by hormone/protein expression were illustrated using the Kaplan-Meier method. The independent prognostic value was tested by Cox regression, using models adjusted for established poor-prognostic factors (age at diagnosis, FIGO stage, type of surgery, and macroscopic residual tumor after surgery). RESULTS HGSC tumors from parous women were PR positive (≥ 1% PR expression in tumor cells) more often than tumors from nulliparous women (42% vs. 16%; p-value 0.04), and having more children was associated with developing PR positive tumors [i.e., ≥ 3 children versus nulliparity, adjusted for age at diagnosis and stage: OR 4.31 (95% CI 1.12-19.69)]. A similar result was seen in the expansion cohort. Parity status had no impact on expression of PGRMC1, relaxin-2 and TGFβ1. No associations were seen with tumor stage or survival. CONCLUSION Tumors from parous women with HGSC expressed PR more often than tumors from nulliparous women, indicating that pregnancies might possibly have a long-lasting impact on ovarian cancer development.
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Affiliation(s)
- Camilla Sköld
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
| | - Sara Corvigno
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Hanna Dahlstrand
- Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Gunilla Enblad
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | | | | | - Karin Stålberg
- Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
| | - Anna Tolf
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Ingrid Glimelius
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
- Division of Clinical Epidemiology, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Anthoula Koliadi
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
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3
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Jung J, Han H. The diverse influences of relaxin-like peptide family on tumor progression: Potential opportunities and emerging challenges. Heliyon 2024; 10:e24463. [PMID: 38298643 PMCID: PMC10828710 DOI: 10.1016/j.heliyon.2024.e24463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/05/2024] [Accepted: 01/09/2024] [Indexed: 02/02/2024] Open
Abstract
Relaxin-like peptide family exhibit differential expression patterns in various types of cancers and play a role in cancer development. This family participates in tumorigenic processes encompassing proliferation, migration, invasion, tumor microenvironment, immune microenvironment, and anti-cancer resistance, ultimately influencing patient prognosis. In this review, we explore the mechanisms underlying the interaction between the RLN-like peptide family and tumors and provide an overview of therapeutic approaches utilizing this interaction.
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Affiliation(s)
| | - Hyunho Han
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
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4
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Karki D, Pant P, Shrestha A, Chhetri ST, Kadel I, Karna GP. Esophageal squamous carcinoma in a 25-year-old female, changing trend in epidemiology: A case report. Clin Case Rep 2023; 11:e8134. [PMID: 37915734 PMCID: PMC10616536 DOI: 10.1002/ccr3.8134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/19/2023] [Accepted: 10/21/2023] [Indexed: 11/03/2023] Open
Abstract
Timely diagnosis, comprehensive assessment, and a multidisciplinary treatment approach are essential for young patients with esophageal squamous cell carcinoma, even when conventional risk factors are absent. This report emphasizes the need for increased clinical awareness and improved patient outcomes in an evolving epidemiological landscape.
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Affiliation(s)
| | - Prashant Pant
- Department of Internal MedicineStar HospitalLalitpurNepal
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5
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Kwantwi LB. The dual and multifaceted role of relaxin-2 in cancer. Clin Transl Oncol 2023; 25:2763-2771. [PMID: 36947362 DOI: 10.1007/s12094-023-03146-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/01/2023] [Indexed: 03/23/2023]
Abstract
The continuous increase in cancer-associated deaths despite the substantial improvement in diagnosis and treatment has sparked discussions on the need for novel biomarkers and therapeutic strategies for cancer. Although increasing evidence has demonstrated the pivotal role of relaxin-2 in multiple cancers, their role is a double-edged sword with both protumor and antitumor having been reported in various malignant tumors. Considering this dual role, it appears the biological mechanism underpinning the action of relaxin-2 in cancer is not clear and further studies to elucidate their potential as a preventive factor for cancers are of prime importance. Herein, a summarized up-to-date report on the role of relaxin-2 in human cancer including detailed clinical and experimental evidence supporting their tumor-promoting and inhibitory functions in cancer development and progression has been elucidated. Also, signaling pathways and other factors orchestrating the activities of relaxin-2 in the tumor microenvironment has been discussed. Collectively, the evidence from this review has demonstrated the need for further evaluation of the role of relaxin-2 as a diagnostic and or prognostic biomarker for cancer.
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Affiliation(s)
- Louis Boafo Kwantwi
- Department of Medical Imaging Sciences, Klintaps College of Health and Allied Sciences, Accra, DTD. TDC, 30A Klagon, Com. 19, Tema, Ghana.
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6
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Bennett AN, Huang RX, He Q, Lee NP, Sung WK, Chan KHK. Drug repositioning for esophageal squamous cell carcinoma. Front Genet 2022; 13:991842. [PMID: 36246638 PMCID: PMC9554346 DOI: 10.3389/fgene.2022.991842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
Esophageal cancer (EC) remains a significant challenge globally, having the 8th highest incidence and 6th highest mortality worldwide. Esophageal squamous cell carcinoma (ESCC) is the most common form of EC in Asia. Crucially, more than 90% of EC cases in China are ESCC. The high mortality rate of EC is likely due to the limited number of effective therapeutic options. To increase patient survival, novel therapeutic strategies for EC patients must be devised. Unfortunately, the development of novel drugs also presents its own significant challenges as most novel drugs do not make it to market due to lack of efficacy or safety concerns. A more time and cost-effective strategy is to identify existing drugs, that have already been approved for treatment of other diseases, which can be repurposed to treat EC patients, with drug repositioning. This can be achieved by comparing the gene expression profiles of disease-states with the effect on gene-expression by a given drug. In our analysis, we used previously published microarray data and identified 167 differentially expressed genes (DEGs). Using weighted key driver analysis, 39 key driver genes were then identified. These driver genes were then used in Overlap Analysis and Network Analysis in Pharmomics. By extracting drugs common to both analyses, 24 drugs are predicted to demonstrate therapeutic effect in EC patients. Several of which have already been shown to demonstrate a therapeutic effect in EC, most notably Doxorubicin, which is commonly used to treat EC patients, and Ixazomib, which was recently shown to induce apoptosis and supress growth of EC cell lines. Additionally, our analysis predicts multiple psychiatric drugs, including Venlafaxine, as repositioned drugs. This is in line with recent research which suggests that psychiatric drugs should be investigated for use in gastrointestinal cancers such as EC. Our study shows that a drug repositioning approach is a feasible strategy for identifying novel ESCC therapies and can also improve the understanding of the mechanisms underlying the drug targets.
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Affiliation(s)
- Adam N. Bennett
- Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Rui Xuan Huang
- Department of Electrical Engineering, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Qian He
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Nikki P. Lee
- Department of Surgery, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Wing-Kin Sung
- Department of Computer Sciences, National University of Singapore, Singapore, Singapore
| | - Kei Hang Katie Chan
- Department of Electrical Engineering, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Department of Epidemiology, Centre for Global Cardiometabolic Health, Brown University, Providence, RI, United States
- *Correspondence: Kei Hang Katie Chan,
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7
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Relaxin-2 as a Potential Biomarker in Cardiovascular Diseases. J Pers Med 2022; 12:jpm12071021. [PMID: 35887517 PMCID: PMC9317583 DOI: 10.3390/jpm12071021] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 11/17/2022] Open
Abstract
The pleiotropic hormone relaxin-2 plays a pivotal role in the physiology and pathology of the cardiovascular system. Relaxin-2 exerts relevant regulatory functions in cardiovascular tissues through the specific receptor relaxin family peptide receptor 1 (RXFP1) in the regulation of cardiac metabolism; the induction of vasodilatation; the reversion of fibrosis and hypertrophy; the reduction of inflammation, oxidative stress, and apoptosis; and the stimulation of angiogenesis, with inotropic and chronotropic effects as well. Recent preclinical and clinical outcomes have encouraged the potential use of relaxin-2 (or its recombinant form, known as serelaxin) as a therapeutic strategy during cardiac injury and/or in patients suffering from different cardiovascular disarrangements, especially heart failure. Furthermore, relaxin-2 has been proposed as a promising biomarker of cardiovascular health and disease. In this review, we emphasize the relevance of the endogenous hormone relaxin-2 as a useful diagnostic biomarker in different backgrounds of cardiovascular pathology, such as heart failure, atrial fibrillation, myocardial infarction, ischemic heart disease, aortic valve disease, hypertension, and atherosclerosis, which could be relevant in daily clinical practice and could contribute to comprehending the specific role of relaxin-2 in cardiovascular diseases.
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8
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Martins RC, Pintalhão M, Leite-Moreira A, Castro-Chaves P. Relaxin and the Cardiovascular System: from Basic Science to Clinical Practice. Curr Mol Med 2021; 20:167-184. [PMID: 31642776 DOI: 10.2174/1566524019666191023121607] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 08/07/2019] [Accepted: 10/07/2019] [Indexed: 12/16/2022]
Abstract
The peptide hormone relaxin was originally linked to reproductive physiology, where it is believed to mediate systemic and renal hemodynamic adjustments to pregnancy. Recently, its broad range of effects in the cardiovascular system has been the focus of intensive research regarding its implications under pathological conditions and potential therapeutic potential. An understanding of the multitude of cardioprotective actions prompted the study of serelaxin, recombinant human relaxin-2, for the treatment of acute heart failure. Despite early promising results from phase II studies, recently revealed RELAX-AHF-2 outcomes were rather disappointing and the treatment for acute heart failure remains an unmet medical need. This article reviews the physiologic actions of relaxin on the cardiovascular system and its relevance in the pathophysiology of cardiovascular disease. We summarize the most updated clinical data and discuss future directions of serelaxin for the treatment of acute heart failure. This should encourage additional work to determine how can relaxin's beneficial effects be exploited for the treatment of cardiovascular disease.
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Affiliation(s)
- Rafael Clara Martins
- Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto, Portugal.,Cardiovascular Research Centre, Porto, Portugal.,Internal Medicine Department, São João Hospital Centre, Porto, Portugal
| | - Mariana Pintalhão
- Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto, Portugal.,Cardiovascular Research Centre, Porto, Portugal.,Internal Medicine Department, São João Hospital Centre, Porto, Portugal
| | - Adelino Leite-Moreira
- Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto, Portugal.,Cardiovascular Research Centre, Porto, Portugal.,Cardiothoracic Surgery Department, São João Hospital Centre, Porto, Portugal
| | - Paulo Castro-Chaves
- Department of Surgery and Physiology, Faculty of Medicine, University of Porto, Porto, Portugal.,Cardiovascular Research Centre, Porto, Portugal.,Internal Medicine Department, São João Hospital Centre, Porto, Portugal
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9
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Wang A, Tan Y, Zhang Y, Xu D, Fang Y, Chen X, Wang S. The prognostic role of angiolymphatic invasion in N0 esophageal carcinoma: a meta-analysis and systematic review. J Thorac Dis 2019; 11:3276-3283. [PMID: 31559030 DOI: 10.21037/jtd.2019.08.50] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Background Angiolymphatic invasion (ALI) plays an important role in lymph node metastasis. The presence of an ALI predicts a high risk for lymph node metastasis and a poor prognosis in patients with lymph node negative esophageal carcinoma. The independent prognostic value of ALI in node-negative patients remains controversial. A meta-analysis was conducted to investigate the relationship between ALI and prognosis in cases of lymph node negative esophageal carcinoma. Methods We searched the PubMed, EMBASE, Web of Science, and Cochrane Library databases for studies on the relationship between ALI and the prognosis of patients with esophageal carcinoma. Studies with N0 patients' survival data related to ALI were included. The effect size (ES) was the hazard ratio (HR) with 95% confidence intervals (CI) for cancer-specific survival (CSS), overall survival (OS) and recurrence-free survival (RFS). Results A total of 9 studies with 2,154 patients were included after applying the inclusion and exclusion criteria. The pooled HR showed that patients with ALI have a poor cancer specific survival (HR =2.54; 95% CI, 1.84-3.51; P<0.001), a poor overall survival (HR =2.84; 95% CI, 2.17-3.72; P<0.001) and a short disease free survival (HR =2.84; 95% CI: 1.85-4.37; P<0.001). Conclusions ALI could be used as an indicator for identifying high-risk patients with lymph node-negative esophageal carcinoma and can be used as an indicator for sub-stages in further stage classification.
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Affiliation(s)
- An Wang
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai 200400, China
| | - Yulong Tan
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai 200400, China
| | - Yuyan Zhang
- Suzhou Center for Disease Prevention and Control, Suzhou 215008, China
| | - Dong Xu
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai 200400, China
| | - Yuchao Fang
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai 200400, China
| | - Xiaofeng Chen
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai 200400, China
| | - Shaohua Wang
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai 200400, China
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10
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Wang A, Tan Y, Geng X, Chen X, Wang S. Lymphovascular invasion as a poor prognostic indicator in thoracic esophageal carcinoma: a systematic review and meta-analysis. Dis Esophagus 2019; 32:5085982. [PMID: 30169614 DOI: 10.1093/dote/doy083] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The ability to further stratify patients with esophageal carcinoma (EC) in the same stage into high-risk patients by the presence of lymphovascular invasion (LVI) may permit refinement of multi-modality therapy. However, the role of LVI in the prognosis of EC is not definite. A meta-analysis was conducted to investigate the relationship between LVI and EC prognosis. We searched PubMed, Embase, Web of Science, and Cochrane Library databases for studies on the association between LVI and prognosis of EC. Only studies with patient survival data related to LVI were included. The effect size for this analysis was the hazard ratio (HR) with 95% confidence intervals (CI) for overall survival (OS) and recurrence-free survival (RFS). Thirty-five studies with 9876 patients were included according to the defined inclusion and exclusion criteria. LVI was a poor indicator for the OS (HR = 1.64, 95% CI: 1.44-1.87, P < 0.001) and RFS (HR = 1.79, 95% CI: 1.38-2.34, P < 0.001). However, the heterogeneity was medium in OS (I2 = 61.2%, P < 0.001) and extreme in RFS (I2 = 77.5%, P < 0.001). In subgroup analysis, heterogeneity was originated from the staining method and proportion of early disease (stage (I + II)). We concluded that LVI was a poor prognostic indicator in patients with EC, especially in those studies with the IHC staining method and a high proportion of early disease (stage (I + II)).
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Affiliation(s)
- A Wang
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Y Tan
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - X Geng
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - X Chen
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - S Wang
- Department of Thoracic Surgery, Huashan Hospital, Fudan University, Shanghai, China
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11
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Li YY, Du LB, Hu XQ, Jaiswal S, Gu SY, Gu YX, Dong HJ. A suggested framework for conducting esophageal cancer screening in China. J Dig Dis 2018; 19:722-729. [PMID: 30375169 DOI: 10.1111/1751-2980.12675] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 09/10/2018] [Accepted: 09/27/2018] [Indexed: 12/11/2022]
Abstract
Esophageal cancer is one of the most prevalent malignant tumors worldwide. Because of its challenging clinical characteristics, esophageal cancer is a major disease burden on the economy, society, and individuals. There is an urgent need to establish a beneficial policy to reduce the burden and to improve the health-related quality of life of patients. Primary prevention with smoking cessation and reduction of drinking alcohol are highly recommended. Screening, early diagnosis and treatment are suggested. This study intended to establish a modified future screening model from the social perspective that deploys different strategies for different populations. Risk assessment and community-based screening are proposed for high-risk populations. Health education in low-risk areas could help promote primary prevention to mitigate lifestyle factors and to increase public awareness and potentially to increase screening and early detection.
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Affiliation(s)
- Yuan Yuan Li
- Center for Health Policy Studies, Department of Social Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Ling Bin Du
- Office for Zhejiang Cancer Center, Zhejiang Cancer Hospital, Hangzhou, Zhejiang Province, China
| | - Xiao Qian Hu
- Center for Health Policy Studies, Department of Social Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Sanjay Jaiswal
- Cardiovascular Department, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Shu Yan Gu
- Center for Health Policy Studies, Department of Social Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Yu Xuan Gu
- Center for Health Policy Studies, Department of Social Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Heng Jin Dong
- Center for Health Policy Studies, Department of Social Medicine, School of Public Health, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
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12
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Fue M, Miki Y, Takagi K, Hashimoto C, Yaegashi N, Suzuki T, Ito K. Relaxin 2/RXFP1 Signaling Induces Cell Invasion via the β-Catenin Pathway in Endometrial Cancer. Int J Mol Sci 2018; 19:ijms19082438. [PMID: 30126180 PMCID: PMC6121407 DOI: 10.3390/ijms19082438] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/15/2018] [Accepted: 08/17/2018] [Indexed: 12/20/2022] Open
Abstract
Relaxin is known to play an important role in animal pregnancies, including those of humans. It is suggested that relaxin induces aggressive cell growth and invasiveness in several types of cancer, including endometrial cancer. However, the mechanisms of relaxin remain largely unclear. In this study, we examined the effects of relaxin 2 (RLN2), the major circulating relaxin in humans, on human endometrial carcinoma cell lines. RLN2 treatment induced invasion in HEC-1B and Ishikawa cells. RLN2-induced cell invasion was significantly decreased by transfection of relaxin receptor 1 (RXFP1) siRNAs. The β-catenin inhibitor, XAV939, also significantly inhibited the RLN2-induced cell invasions. Both a decrease of cadherin expression and an increase of β-catenin phosphorylation were observed in response to the RLN2 treatment in HEC-1B and Ishikawa cells. We then examined RLN2 and RXFP1 expression in 80 human endometrioid endometrial carcinoma tissues. RLN2 immunoreactivity was detected in the human endometrial carcinoma cells and had a correlative tendency with histological grade and RXFP1. These results suggest that adherens junctions in cancer cells are weakened by the breakdown of the cadherin/catenin complex, which is induced by β-catenin phosphorylation via RLN2/RXFP1 signaling.
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Affiliation(s)
- Misaki Fue
- Department of Disaster Obstetrics and Gynecology, International Research Institute of Disaster Science (IRIDeS), Tohoku University, Sendai 980-8575, Japan.
| | - Yasuhiro Miki
- Department of Disaster Obstetrics and Gynecology, International Research Institute of Disaster Science (IRIDeS), Tohoku University, Sendai 980-8575, Japan.
| | - Kiyoshi Takagi
- Department of Pathology and Histotechnology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Chiaki Hashimoto
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Takashi Suzuki
- Department of Pathology and Histotechnology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Kiyoshi Ito
- Department of Disaster Obstetrics and Gynecology, International Research Institute of Disaster Science (IRIDeS), Tohoku University, Sendai 980-8575, Japan.
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13
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Guo X, Liu Y, Huang X, Wang Y, Qu J, Lv Y. Serum relaxin as a diagnostic and prognostic marker in patients with epithelial ovarian cancer. Cancer Biomark 2018; 21:81-87. [PMID: 29060928 DOI: 10.3233/cbm-170278] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND AIM Relaxin is a short circulating peptide hormone. The aim of this study was to understand the role of relaxin in progression of epithelial ovarian cancer (EOC) and to assess its diagnostic and prognostic significance. METHODS A total of 124 patients with EOC, 46 patients with benign ovarian diseases, and 50 healthy controls were recruited. Serum levels of relaxin were determined by ELISA method. The relationship between serum relaxin level and each of the clinicopathological parameters was analyzed using the χ2 test. Survival curves were plotted using the Kaplan-Meier method. The statistical difference in survival between the different groups was compared using the log-rank test. Survival correlation with the prognostic factors was further investigated by multivariate analysis using the Cox proportional hazards model with backward stepwise likelihood ratio. RESULTS The results showed that serum relaxin level was significantly higher in patients with EOC than those with benign ovarian diseases and healthy controls (p< 0.01). Serum relaxin level was associated with FIGO stage, lymph node metastasis, tumor resectability, survival of the patients, chemotherapy and tumor recurrence (p< 0.05). Analysis using the Kaplan-meier method indicated that patients with high serum relaxin had significantly shorter overall survival time than those with low relaxin (p< 0.01). In a multivariate analysis along with clinical prognostic parameters, serum relaxin was identified as an independent adverse prognostic variable for survival. CONCLUSIONS These results indicated that serum relaxin may be a clinically useful indicator for diagnostic and prognostic evaluation in EOC patients.
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Affiliation(s)
- Xiaojing Guo
- Department of Reproductive Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yujie Liu
- Department of Reproductive Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xia Huang
- Department of Reproductive Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yun Wang
- Department of Gynaecology, People's Hospital of Jining, Jining, Shandong, China.,Department of Gynaecology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Jin Qu
- Department of Gynaecology, People's Hospital of Jining, Jining, Shandong, China.,Department of Gynaecology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yingpin Lv
- Department of Reproductive Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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Affiliation(s)
- Y Xu
- Department of Urology, The Central Hospital of Linyi , Yishui, China
| | - Q Yu
- Department of Urology, The Affiliated Hospital of Qingdao University , Qingdao, China
| | - Y Liu
- Department of Urology, The Central Hospital of Linyi , Yishui, China
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15
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Relaxin-2 Expression in Oral Squamous Cell Carcinoma. Int J Biol Markers 2016; 31:e324-9. [DOI: 10.5301/jbm.5000219] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2016] [Indexed: 02/07/2023]
Abstract
Background When advanced, oral squamous cell carcinoma (OSCC) may involve adjacent non-epithelial structures, and the prognosis is worse for bone invasion. Human relaxin-2 is a peptide hormone that has recently been associated with cancer. It can induce human osteoclast differentiation and activation, suggesting a role in tumor-driven osteolysis. This study was a preliminary assessment of the prognostic role of relaxin-2 in surgical specimens of OSCC tissue and adjacent but uninvolved mandibular/maxillary bone. Methods Relaxin-2 immunohistochemical expression and reaction intensity were assessed in tumor and uninvolved adjacent mandibular/maxillary bone specimens from 23 operated OSCC patients. Results All OSCC specimens were positive for relaxin-2. The intensity of its reaction in OSCC correlated significantly with the pattern of the tumor's invasion front (p = 0.02), being higher with the infiltrative pattern. Mean relaxin-2 immunohistochemical expression was higher in patients whose OSCC recurred after treatment than those experiencing no recurrence (81.3% ± 22.6% vs. 59.5% ± 29.7%, respectively). A significant direct association emerged between relaxin-2 expression in OSCC specimens and recurrence rate (p = 0.049). Conclusions Relaxin-2 expression in OSCC should be further investigated as a potentially useful marker for identifying patients at higher risk of recurrence, who might benefit from closer follow-up and more aggressive adjuvant therapy. In other oncological settings, increasing evidence of relaxin being produced by cancer cells is prompting efforts to synthesize human relaxin-2 analogs capable of acting as antagonists and limiting tumor growth.
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16
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Guan S, Wang C, Chen X, Liu B, Tan B, Liu F, Wang D, Han L, Wang L, Huang X, Wang J, Yao B, Shi J, Chen P, Nesa EU, Song Q, Cheng Y. MiR-613: a novel diagnostic and prognostic biomarker for patients with esophageal squamous cell carcinoma. Tumour Biol 2015; 37:4383-91. [PMID: 26499784 DOI: 10.1007/s13277-015-4271-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 10/15/2015] [Indexed: 12/29/2022] Open
Abstract
MicroRNA-613 (miR-613) plays important roles in tumorigenesis and cancer progression. We aimed to evaluate its expression level and potential for diagnosis and prognosis in esophageal squamous cell cancer (ESCC). We examined miR-613 expression in 60 pairs of ESCC cancerous and matched paracancerous tissues, serum samples from 75 ESCC patients and 75 healthy volunteers, and 105 formalin-fixed paraffin-embedded (FFPE) tissue samples using quantitative reverse transcription polymerase chain reaction. Receiver-operating characteristic (ROC) curve analysis, Kaplan-Meier method, and Cox regression were applied to analyze its diagnostic and prognostic value. MiR-613 was significantly decreased in ESCC tissue compared with paracancerous tissue (P < 0.001). Moreover, the expression level of miR-613 was significantly reduced with increased T stage of ESCC. Statistically significant difference between ESCC patients and healthy controls in expression level of miR-613 (0.89 ± 0.73 vs. 1.71 ± 1.03, P < 0.001) was found. The area under the ROC curve (AUC) based on serum miR-613 was 0.767 ± 0.040. We also performed analysis on early-stage patients and revealed that the AUC value was 0.728 ± 0.052 (P < 0.001). The Kaplan-Meier curve revealed that the downregulation of miR-613 was related to worse overall survival (OS) and progression-free survival (PFS) of ESCC patients (P = 0.018 and P = 0.035, respectively). Furthermore, the multivariate analysis identified miR-613 to be an independent prognostic factor for OS and PFS (P = 0.031 and P = 0.006, respectively) In conclusion, miR-613 is significantly reduced in cancerous tissue and serum samples of ESCC patients. It can serve as an ideal indicator for the diagnosis and prognosis of ESCC.
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Affiliation(s)
- Shanghui Guan
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Cong Wang
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Xuan Chen
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Bowen Liu
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Bingxu Tan
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Fang Liu
- Department of Image, Shandong Medical College, Jinan, Shandong, 250002, People's Republic of China
| | - Ding Wang
- Department of Clinical Laboratory, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Lihui Han
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Lu Wang
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Xiaochen Huang
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Jiangfeng Wang
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Bin Yao
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Jialei Shi
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Pengxiang Chen
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Effat Un Nesa
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Qingxu Song
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China
| | - Yufeng Cheng
- Department of Radiation Oncology, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, People's Republic of China.
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Halls ML, Bathgate RAD, Sutton SW, Dschietzig TB, Summers RJ. International Union of Basic and Clinical Pharmacology. XCV. Recent advances in the understanding of the pharmacology and biological roles of relaxin family peptide receptors 1-4, the receptors for relaxin family peptides. Pharmacol Rev 2015; 67:389-440. [PMID: 25761609 DOI: 10.1124/pr.114.009472] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Relaxin, insulin-like peptide 3 (INSL3), relaxin-3, and INSL5 are the cognate ligands for the relaxin family peptide (RXFP) receptors 1-4, respectively. RXFP1 activates pleiotropic signaling pathways including the signalosome protein complex that facilitates high-sensitivity signaling; coupling to Gα(s), Gα(i), and Gα(o) proteins; interaction with glucocorticoid receptors; and the formation of hetero-oligomers with distinctive pharmacological properties. In addition to relaxin-related ligands, RXFP1 is activated by Clq-tumor necrosis factor-related protein 8 and by small-molecular-weight agonists, such as ML290 [2-isopropoxy-N-(2-(3-(trifluoromethylsulfonyl)phenylcarbamoyl)phenyl)benzamide], that act allosterically. RXFP2 activates only the Gα(s)- and Gα(o)-coupled pathways. Relaxin-3 is primarily a neuropeptide, and its cognate receptor RXFP3 is a target for the treatment of depression, anxiety, and autism. A variety of peptide agonists, antagonists, biased agonists, and an allosteric modulator target RXFP3. Both RXFP3 and the related RXFP4 couple to Gα(i)/Gα(o) proteins. INSL5 has the properties of an incretin; it is secreted from the gut and is orexigenic. The expression of RXFP4 in gut, adipose tissue, and β-islets together with compromised glucose tolerance in INSL5 or RXFP4 knockout mice suggests a metabolic role. This review focuses on the many advances in our understanding of RXFP receptors in the last 5 years, their signal transduction mechanisms, the development of novel compounds that target RXFP1-4, the challenges facing the field, and current prospects for new therapeutics.
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Affiliation(s)
- Michelle L Halls
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia (M.L.H., R.J.S.); Neuropeptides Division, Florey Institute of Neuroscience and Mental Health and Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, Australia (R.A.D.B.); Neuroscience Drug Discovery, Janssen Research & Development, LLC, San Diego, California (S.W.S.); Immundiagnostik AG, Bensheim, Germany (T.B.D.); and Charité-University Medicine Berlin, Campus Mitte, Medical Clinic for Cardiology and Angiology, Berlin, Germany (T.B.D.)
| | - Ross A D Bathgate
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia (M.L.H., R.J.S.); Neuropeptides Division, Florey Institute of Neuroscience and Mental Health and Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, Australia (R.A.D.B.); Neuroscience Drug Discovery, Janssen Research & Development, LLC, San Diego, California (S.W.S.); Immundiagnostik AG, Bensheim, Germany (T.B.D.); and Charité-University Medicine Berlin, Campus Mitte, Medical Clinic for Cardiology and Angiology, Berlin, Germany (T.B.D.)
| | - Steve W Sutton
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia (M.L.H., R.J.S.); Neuropeptides Division, Florey Institute of Neuroscience and Mental Health and Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, Australia (R.A.D.B.); Neuroscience Drug Discovery, Janssen Research & Development, LLC, San Diego, California (S.W.S.); Immundiagnostik AG, Bensheim, Germany (T.B.D.); and Charité-University Medicine Berlin, Campus Mitte, Medical Clinic for Cardiology and Angiology, Berlin, Germany (T.B.D.)
| | - Thomas B Dschietzig
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia (M.L.H., R.J.S.); Neuropeptides Division, Florey Institute of Neuroscience and Mental Health and Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, Australia (R.A.D.B.); Neuroscience Drug Discovery, Janssen Research & Development, LLC, San Diego, California (S.W.S.); Immundiagnostik AG, Bensheim, Germany (T.B.D.); and Charité-University Medicine Berlin, Campus Mitte, Medical Clinic for Cardiology and Angiology, Berlin, Germany (T.B.D.)
| | - Roger J Summers
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, Victoria, Australia (M.L.H., R.J.S.); Neuropeptides Division, Florey Institute of Neuroscience and Mental Health and Department of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria, Australia (R.A.D.B.); Neuroscience Drug Discovery, Janssen Research & Development, LLC, San Diego, California (S.W.S.); Immundiagnostik AG, Bensheim, Germany (T.B.D.); and Charité-University Medicine Berlin, Campus Mitte, Medical Clinic for Cardiology and Angiology, Berlin, Germany (T.B.D.)
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18
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Zhang D, Wang Y, Yu S, Niu H, Gong X, Miao X. Serum relaxin levels as a novel biomarker for detection of acute myocardial infarction. Int J Clin Exp Med 2015; 8:16937-16940. [PMID: 26629247 PMCID: PMC4659135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 09/10/2015] [Indexed: 06/05/2023]
Abstract
UNLABELLED Background- AIMS Little is known about the prognostic significance of elevated serum relaxin in acute myocardial infarction (AMI) patients. The present study is designed to investigate the potential association between serum relaxin levels and the risk of AMI. MATERIALS AND METHODS We measured circulating relaxin levels in 80 patients (median age 62.3 years) who presented with first-time AMI 8 hours after the incident. The circulating relaxin-2 levels in 80 healthy volunteers (median age 61.5 years) was also measured. Relaxin-2 was detected using enzyme immunoassay in both groups. RESULTS Serum relaxin levels were significantly higher in patients with AMI (27.4 ± 6.3 ng/ml) compared to controls (9.2 ± 2.3 ng/ml) (P < 0.01). We found that a relaxin level > 13.8 ng/ml had a sensitivity of 79% and a specificity of 86% for predicting AMI. Relaxin revealed the higher sensitivity and specificity for diagnosing AMI. CONCLUSIONS Elevated relaxin in plasma may be a novel biomarker for early detection of AMI.
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Affiliation(s)
- Dongxia Zhang
- Department of Cardiothoracic Medicine, Yuhuangding HospitalYantai, Shandong, China
| | - Yun Wang
- Department of Cardiothoracic Surgery, People’s Hospital of ZhangqiuZhangqiu, Jinan, China
| | - Songben Yu
- Department of Pharmacy, People’s Hospital of ZhangqiuZhangqiu, Jinan, China
| | - Hua Niu
- Department of Radiology, People’s Hospital of ZhangqiuZhangqiu, Jinan, China
| | - Xingji Gong
- Department of Cardiothoracic Medicine, Yuhuangding HospitalYantai, Shandong, China
| | - Xia Miao
- Department of Clinical Lab, People’s Hospital of WeifangWeifang, China
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Neschadim A, Summerlee AJS, Silvertown JD. Targeting the relaxin hormonal pathway in prostate cancer. Int J Cancer 2014; 137:2287-95. [PMID: 25043063 DOI: 10.1002/ijc.29079] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 07/07/2014] [Indexed: 11/11/2022]
Abstract
Targeting the androgen signalling pathway has long been the hallmark of anti-hormonal therapy for prostate cancer. However, development of androgen-independent prostate cancer is an inevitable outcome to therapies targeting this pathway, in part, owing to the shift from cancer dependence on androgen signalling for growth in favor of augmentation of other cellular pathways that provide proliferation-, survival- and angiogenesis-promoting signals. This review focuses on the role of the hormone relaxin in the development and progression of prostate cancer, prior to and after the onset of androgen independence, as well as its role in cancers of other reproductive tissues. As the body of literature expands, examining relaxin expression in cancerous tissues and its role in a growing number of in vitro and in vivo cancer models, our understanding of the important involvement of this hormone in cancer biology is becoming clearer. Specifically, the pleiotropic functions of relaxin affecting cell growth, angiogenesis, blood flow, cell migration and extracellular matrix remodeling are examined in the context of cancer progression. The interactions and intercepts of the intracellular signalling pathways of relaxin with the androgen pathway are explored in the context of progression of castration-resistant and androgen-independent prostate cancers. We provide an overview of current anti-hormonal therapeutic treatment options for prostate cancer and delve into therapeutic approaches and development of agents aimed at specifically antagonizing relaxin signalling to curb tumor growth. We also discuss the rationale and challenges utilizing such agents as novel anti-hormonals in the clinic, and their potential to supplement current therapeutic modalities.
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Affiliation(s)
- Anton Neschadim
- Armour Therapeutics Inc., Toronto, 124 Orchard View Blvd, Toronto, ON, Canada
| | | | - Joshua D Silvertown
- Armour Therapeutics Inc., Toronto, 124 Orchard View Blvd, Toronto, ON, Canada
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20
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Upregulation of relaxin after experimental subarachnoid hemorrhage in rabbits. BIOMED RESEARCH INTERNATIONAL 2014; 2014:836397. [PMID: 25133183 PMCID: PMC4123578 DOI: 10.1155/2014/836397] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Accepted: 06/24/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND Although relaxin causes vasodilatation in systemic arteries, little is known about its role in cerebral arteries. We investigated the expression and role of relaxin in basilar arteries after subarachnoid hemorrhage (SAH) in rabbits. METHODS Microarray analysis with rabbit basilar artery RNA was performed. Messenger RNA expression of relaxin-1 and relaxin/insulin-like family peptide receptor 1 (RXFP1) was investigated with quantitative RT-PCR. RXFP1 expression in the basilar artery was investigated with immunohistochemistry. Relaxin concentrations in cerebrospinal fluid (CSF) and serum were investigated with an enzyme-linked immunosorbent assay. Using human brain vascular smooth muscle cells (HBVSMC) preincubated with relaxin, myosin light chain phosphorylation (MLC) was investigated with immunoblotting after endothelin-1 stimulation. RESULTS After SAH, RXFP1 mRNA and protein were significantly downregulated on day 3, whereas relaxin-1 mRNA was significantly upregulated on day 7. The relaxin concentration in CSF was significantly elevated on days 5 and 7. Pretreatment with relaxin reduced sustained MLC phosphorylation induced by endothelin-1 in HBVSMC. CONCLUSION Upregulation of relaxin and downregulation of RXFP1 after SAH may participate in development of cerebral vasospasm. Downregulation of RXFP1 may induce a functional decrease in relaxin activity during vasospasm. Understanding the role of relaxin may provide further insight into the mechanisms of cerebral vasospasm.
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Napier KJ, Scheerer M, Misra S. Esophageal cancer: A Review of epidemiology, pathogenesis, staging workup and treatment modalities. World J Gastrointest Oncol 2014; 6:112-120. [PMID: 24834141 PMCID: PMC4021327 DOI: 10.4251/wjgo.v6.i5.112] [Citation(s) in RCA: 549] [Impact Index Per Article: 54.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Revised: 12/31/2013] [Accepted: 04/11/2014] [Indexed: 02/05/2023] Open
Abstract
Esophageal cancer is a serious malignancy with regards to mortality and prognosis. It is a growing health concern that is expected to increase in incidence over the next 10 years. Squamous cell carcinoma is the most common histological type of esophageal cancer worldwide, with a higher incidence in developing nations. With the increased prevalence of gastroesophageal reflux disease and obesity in developed nations, the incidence of esophageal adenocarcinoma has dramatically increased in the past 40 years. Esophageal cancer is staged according to the widely accepted TNM system. Staging plays an integral part in guiding stage specific treatment protocols and has a great impact on overall survival. Common imaging modalities used in staging include computed tomography, endoscopic ultrasound and positron emission tomography scans. Current treatment options include multimodality therapy mainstays of current treatment include surgery, radiation and chemotherapy. Tumor markers of esophageal cancer are an advancing area of research that could potentially lead to earlier diagnosis as well as playing a part in assessing tumor response to therapy.
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He J, Zeng ZC, Xiang ZL, Yang P. Mass spectrometry-based serum peptide profiling in hepatocellular carcinoma with bone metastasis. World J Gastroenterol 2014; 20:3025-3032. [PMID: 24659894 PMCID: PMC3961966 DOI: 10.3748/wjg.v20.i11.3025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 11/14/2013] [Accepted: 01/02/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the potential of serum peptides as a diagnostic tool for hepatocellular carcinoma (HCC) with bone metastasis.
METHODS: Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) was used to characterize the serum peptide profile of HCC patients with bone metastasis. Serum samples from 138 HCC patients (66 cases with and 72 cases without bone metastasis) were randomly assigned into a training set (n = 76) and a test set (n = 62). Differential serum peptides were examined using ClinProt magnetic bead-based purification followed by MALDI-TOF-MS. The sequences of differentially expressed serum peptides were identified using liquid chromatography-mass spectrometry. A diagnostic model was established using a learning algorithm of radial basis function neural network verified by a single blind trial. Receiver operating characteristic (ROC) analysis was performed to evaluate the diagnostic power of the established model.
RESULTS: Ten peptide peaks were significantly different between HCC patients with or without bone metastasis (P < 0.001). Sequences of seven peptides with mass to charge ratios (m/z) of 1780.7, 1866.5, 2131.6, 2880.4, 1532.4, 2489.8, and 2234.3 were successfully identified. These seven peptides were derived from alpha-fetoprotein, prothrombin, serglycin, isoform 2 of inter-alpha-trypsin inhibitor heavy chain H4, isoform 1 of autophagy-related protein 16-2, and transthyretin and fibrinogen beta chains, respectively. The recognition rate and predictive power of a diagnostic model established on the basis of six significant peptides (m/z for these six peptides were 1535.4, 1780.7, 1866.5, 2131.6, 2880.4, and 2901.9) were 89.47% and 82.89%, respectively. The sensitivity and specificity of this model based upon a single blind trial were 85.29% and 85.71%, respectively. ROC analysis found that the AUC (area under the ROC curve) value was 0.911.
CONCLUSION: Our study suggested that serum peptides may serve as a diagnosis tool for HCC bone metastasis.
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