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Chang CL, Cai Z, Hsu SYT. Gel-forming antagonist provides a lasting effect on CGRP-induced vasodilation. Front Pharmacol 2022; 13:1040951. [PMID: 36569288 PMCID: PMC9772450 DOI: 10.3389/fphar.2022.1040951] [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: 09/09/2022] [Accepted: 11/14/2022] [Indexed: 12/14/2022] Open
Abstract
Migraine affects ∼15% of the adult population, and the standard treatment includes the use of triptans, ergotamines, and analgesics. Recently, CGRP and its receptor, the CLR/RAMP1 receptor complex, have been targeted for migraine treatment due to their critical roles in mediating migraine headaches. The effort has led to the approval of several anti-CGRP antibodies for chronic migraine treatment. However, many patients still suffer continuous struggles with migraine, perhaps due to the limited ability of anti-CGRP therapeutics to fully reduce CGRP levels or reach target cells. An alternative anti-CGRP strategy may help address the medical need of patients who do not respond to existing therapeutics. By serendipity, we have recently found that several chimeric adrenomedullin/adrenomedullin 2 peptides are potent CLR/RAMP receptor antagonists and self-assemble to form liquid gels. Among these analogs, the ADE651 analog, which potently inhibits CLR/RAMP1 receptor signaling, forms gels at a 6-20% level. Screening of ADE651 variants indicated that residues at the junctional region of this chimeric peptide are important for gaining the gel-forming capability. Gel-formation significantly slowed the passage of ADE651 molecules through Centricon filters. Consistently, subcutaneous injection of ADE651 gel in rats led to the sustained presence of ADE651 in circulation for >1 week. In addition, analysis of vascular blood flow in rat hindlimbs showed ADE651 significantly reduces CGRP-induced vasodilation. Because gel-forming antagonists could have direct and sustained access to target cells, ADE651 and related antagonists for CLR/RAMP receptors may represent promising candidates for targeting CGRP- and/or adrenomedullin-mediated headaches in migraine patients.
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Affiliation(s)
- Chia Lin Chang
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center, Chang Gung University, Taoyuan, Taiwan
| | - Zheqing Cai
- CL Laboratory LLC, Gaithersburg, MD, United States
| | - Sheau Yu Teddy Hsu
- Adepthera LLC, San Jose, CA, United States,*Correspondence: Sheau Yu Teddy Hsu,
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2
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Jailani ABA, Bigos KJA, Avgoustou P, Egan JL, Hathway RA, Skerry TM, Richards GO. Targeting the adrenomedullin-2 receptor for the discovery and development of novel anti-cancer agents. Expert Opin Drug Discov 2022; 17:839-848. [PMID: 35733389 DOI: 10.1080/17460441.2022.2090541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Adrenomedullin (AM) is a peptide responsible for many physiological processes including vascular health and hormone regulation. Dysregulation of AM signaling can stimulate cancers by promoting proliferation, angiogenesis and metastasis. Two AM receptors contribute to tumor progression in different ways. Adrenomedullin-1 receptor (AM1R) regulates blood pressure and blocking AM signaling via AM1R would be clinically unacceptable. Therefore, antagonizing adrenomedullin-2 receptor (AM2R) presents as an avenue for anti-cancer drug development. AREAS COVERED We review the literature to highlight AM's role in cancer as well as delineating the specific roles AM1R and AM2R mediate in the development of a pro-tumoral microenvironment. We highlight the importance of exploring the residue differences between the receptors that led to the development of first-in-class selective AM2R small molecule antagonists. We also summarize the current approaches targeting AM and its receptors, their anti-tumor effects and their limitations. EXPERT OPINION As tool compounds, AM2R antagonists will allow the dissection of the functions of CGRPR (calcitonin gene-related peptide receptor), AM1R and AM2R, and has considerable potential as a first-in-class oncology therapy. Furthermore, the lack of detectable side effects and good drug-like pharmacokinetic properties of these AM2R antagonists support the promise of this class of compounds as potential anti-cancer therapeutics.
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Affiliation(s)
- Ameera B A Jailani
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - Kamilla J A Bigos
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - Paris Avgoustou
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - Joseph L Egan
- Department of Chemistry, University of Sheffield, Sheffield, UK
| | | | - Timothy M Skerry
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
| | - Gareth O Richards
- Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK
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Jung M, Jang I, Kim K, Moon KC. CK14 Expression Identifies a Basal/Squamous-Like Type of Papillary Non-Muscle-Invasive Upper Tract Urothelial Carcinoma. Front Oncol 2020; 10:623. [PMID: 32391279 PMCID: PMC7193093 DOI: 10.3389/fonc.2020.00623] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/03/2020] [Indexed: 12/14/2022] Open
Abstract
Object: CK14 expression is an important marker of basal/squamous-like (BASQ)-type muscle-invasive bladder carcinoma, and this molecularly defined subtype has a poor prognosis and a distinct response to chemotherapy. However, CK14 expression and its clinicopathological and molecular significance in papillary non-muscle-invasive upper tract urothelial carcinoma (NMIUTUC) remain unknown. Herein, we investigated the prognostic implications of immunohistochemical (IHC) staining for CK14 and the transcriptional characteristics associated with CK14 expression in papillary NMIUTUC. Materials and Methods: IHC staining for CK14 was conducted in 204 papillary NMIUTUC specimens. Positive CK14 IHC staining was defined as a positive signal in >0% of tumor cells. RNA sequencing data were analyzed from 8 papillary high-grade NMIUTUC specimens consisting of 4 CK14-positive and 4 CK14-negative tumors. Results: CK14 positivity was associated with a high TNM stage (p < 0.001) and a high World Health Organization grade (p = 0.003). Survival analysis showed that CK14 positivity was significantly associated with poor progression-free survival (p = 0.015; hazard ratio [HR] = 2.990; 95% confidence interval [CI] = 1.180-7.580) and was marginally associated with poor cancer-specific survival (p = 0.052; HR = 3.77; 95% CI = 0.900-15.780). Gene set enrichment analysis demonstrated that the CK14-positive tumors were associated with a basal subtype of breast cancer, squamous cell carcinoma development, p40, tumor necrosis factor α-nuclear factor-κB, and p53 pathways, and embryonic stem cells; these characteristics are reminiscent of the BASQ subtype. In addition, with a p < 0.05 and |fold change| ≥2 as the cutoffs, we identified 178 differentially expressed genes when comparing CK14-positive and CK14-negative tumors. Functional analysis of these genes revealed several networks and gene ontology terms related to the positive regulation of cellular proliferation in CK14-positive tumors. Consistent with these results, we demonstrated that the mean Ki-67 proliferative index was higher in CK14-positive tumors than it was in CK14-negative tumors (2.3 vs. 0.8%, respectively, p = 0.002). Conclusion: CK14-positive papillary NMIUTUC is an aggressive subtype with BASQ-like molecular characteristics and dynamic proliferative activity. We propose that CK14 IHC staining can be a useful biomarker of BASQ-type papillary NMIUTUC that can be applied in daily practice with the aim of precision oncology.
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Affiliation(s)
- Minsun Jung
- Department of Pathology, Seoul National University Hospital, Seoul, South Korea
| | - Insoon Jang
- Division of Clinical Bioinformatics, Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Kwangsoo Kim
- Division of Clinical Bioinformatics, Biomedical Research Institute, Seoul National University Hospital, Seoul, South Korea
| | - Kyung Chul Moon
- Department of Pathology, Seoul National University Hospital, Seoul, South Korea.,Medical Research Center, Kidney Research Institute, Seoul National University College of Medicine, Seoul, South Korea
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Bhandari P, Novikova G, Goergen CJ, Irudayaraj J. Ultrasound beam steering of oxygen nanobubbles for enhanced bladder cancer therapy. Sci Rep 2018; 8:3112. [PMID: 29449656 PMCID: PMC5814559 DOI: 10.1038/s41598-018-20363-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 01/10/2018] [Indexed: 12/23/2022] Open
Abstract
New intravesical treatment approaches for bladder cancer are needed as currently approved treatments show several side effects and high tumor recurrence rate. Our study used MB49 murine urothelial carcinoma model to evaluate oxygen encapsulated cellulosic nanobubbles as a novel agent for imaging and ultrasound guided drug delivery. In this study, we show that oxygen nanobubbles (ONB) can be propelled (up to 40 mm/s) and precisely guided in vivo to the tumor by an ultrasound beam. Nanobubble velocity can be controlled by altering the power of the ultrasound Doppler beam, while nanobubble direction can be adjusted to different desired angles by altering the angle of the beam. Precise ultrasound beam steering of oxygen nanobubbles was shown to enhance the efficacy of mitomycin-C, resulting in significantly lower tumor progression rates while using a 50% lower concentration of chemotherapeutic drug. Further, dark field imaging was utilized to visualize and quantify the ONB ex vivo. ONBs were found to localize up to 500 µm inside the tumor using beam steering. These results demonstrate the potential of an oxygen nanobubble drug encapsulated system to become a promising strategy for targeted drug delivery because of its multimodal (imaging and oxygen delivery) and multifunctional (targeting and hypoxia programming) properties.
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Affiliation(s)
- Pushpak Bhandari
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, 47907, United States
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, United States
| | - Gloriia Novikova
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana, 47907, United States
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, United States
| | - Craig J Goergen
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, 47907, United States
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, United States
| | - Joseph Irudayaraj
- Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana, 47907, United States.
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, United States.
- Department of Bioengineering, UIUC, Urbana, IL 61801, United States.
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Qiao F, Fang J, Xu J, Zhao W, Ni Y, Akuo BA, Zhang W, Liu Y, Ding F, Li G, Liu B, Wang H, Shao S. The role of adrenomedullin in the pathogenesis of gastric cancer. Oncotarget 2017; 8:88464-88474. [PMID: 29179449 PMCID: PMC5687619 DOI: 10.18632/oncotarget.18881] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Accepted: 06/13/2017] [Indexed: 12/29/2022] Open
Abstract
Adrenomedullin has been shown to be overexpressed in many tumors, including gastric cancer tumors; however, its mechanism of action remains unclear. In this study, we examined the role of adrenomedullin in the pathogenesis of gastric cancer. Using clinical specimens and immunohistochemistry, we found that the expression levels of adrenomedullin and its receptors are inordinately elevated as compared to the adjacent non-tumor gastric tissues. We used siRNA gene silencing, in BGC-823 gastric cancer cell lines, to target adrenomedullin genes, and found that increased adrenomedullin expression results in the proliferation of tumor cells, tumor invasion, and metastasis. Furthermore, we found that under hypoxic conditions, gastric cancer BGC-823 cells exhibit higher expression levels of adrenomedullin and various other related proteins. Our results indicate the involvement of adrenomedullin in microvessel proliferation and partially in the release of hypoxia in solid tumors. Knockdown of adrenomedullin expression, at the protein level, reduced the levels of phosphoprotein kinase B and B-cell lymphoma 2 but increased the levels of cleaved-caspase3 and Bcl 2 associated x protein (Bax). Therefore, we hypothesized siRNA targeting of adrenomedullin genes inhibits various serine/threonine kinases via a signaling pathway that induces cell apoptosis. SiRNA targeting of adrenomedullin genes and green fluorescent control vectors were used to transfect BGC-823 cells, and western blot analyses were used to detect changes in the rates of autophagy in related proteins using confocal laser scanning microscopy. No significant changes were detected. Therefore, the knockdown of adrenomedullin and its receptors may represent a novel treatment strategy for gastric cancer.
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Affiliation(s)
- Fuhao Qiao
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China.,Medical Laboratory, Xintai Hospital of Traditional Chinese Medicine, Xintai 271200, Shandong, PR China
| | - Jian Fang
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Jinfeng Xu
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Wenqiu Zhao
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Ying Ni
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | | | - Wei Zhang
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Yun Liu
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Fangfang Ding
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Guanlin Li
- School of The Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Baoguo Liu
- Nuclear Medicine Laboratory, Taian Jiangong Hospital, Taian 271001, Shandong, PR China
| | - Hua Wang
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Shihe Shao
- School of Medicine, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
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Schönauer R, Els-Heindl S, Beck-Sickinger AG. Adrenomedullin - new perspectives of a potent peptide hormone. J Pept Sci 2017; 23:472-485. [DOI: 10.1002/psc.2953] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 11/24/2016] [Accepted: 11/28/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Ria Schönauer
- Faculty of Biosciences, Pharmacy and Psychology, Institute of Biochemistry; Leipzig University; Brüderstraße 34 04103 Leipzig Germany
| | - Sylvia Els-Heindl
- Faculty of Biosciences, Pharmacy and Psychology, Institute of Biochemistry; Leipzig University; Brüderstraße 34 04103 Leipzig Germany
| | - Annette G. Beck-Sickinger
- Faculty of Biosciences, Pharmacy and Psychology, Institute of Biochemistry; Leipzig University; Brüderstraße 34 04103 Leipzig Germany
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7
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A simple method to induce hypoxia-induced vascular endothelial growth factor-A (VEGF-A) expression in T24 human bladder cancer cells. In Vitro Cell Dev Biol Anim 2016; 53:272-276. [PMID: 27752923 DOI: 10.1007/s11626-016-0103-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 09/27/2016] [Indexed: 10/20/2022]
Abstract
Angiogenesis is an essential process for the establishment, development, and dissemination of several malignant tumors including bladder cancer. The hypoxic condition promotes the stabilization of hypoxia-inducible factor 1 alpha (HIF-1α), which translocates to the nucleus to mediate angiogenic factors including the vascular endothelial growth factor A (VEGF-A). AnaeroGen system was developed for microbiology area to create a low oxygen tension required to the growth of anaerobic bacteria. Here, we hypothesized the use of AnaeroGen system to induce hypoxia in T24 human bladder carcinoma cells, in order to promote the overexpression of VEGF-A. T24 cells were cultured in six-well plates containing McCoy medium. Exposures of T24 cells to hypoxia for 1, 8, 24, and 48 h were performed using the Oxoid AnaeroGen system, while T24 cells under normoxia were used as control. The expression of VEGF-A and HIF-1α was analyzed by real-time PCR. ELISA for HIF-1α was carried out. The VEGF-A expression increased significantly by Oxoid AnaeroGen-induced hypoxia in a time-depending manner, reaching the peak in 48 h of hypoxia. Although HIF-1α mRNA was not changed, HIF-1α protein was increased in the presence of hypoxia, reaching a peak at 8 h. These results demonstrated that the Oxoid AnaeroGen system is a simple method to expose T24 cells to hypoxia and efficiently to upregulate VEGF expression in T24 cells.
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Su JB. Vascular endothelial dysfunction and pharmacological treatment. World J Cardiol 2015; 7:719-741. [PMID: 26635921 PMCID: PMC4660468 DOI: 10.4330/wjc.v7.i11.719] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 06/23/2015] [Accepted: 09/18/2015] [Indexed: 02/06/2023] Open
Abstract
The endothelium exerts multiple actions involving regulation of vascular permeability and tone, coagulation and fibrinolysis, inflammatory and immunological reactions and cell growth. Alterations of one or more such actions may cause vascular endothelial dysfunction. Different risk factors such as hypercholesterolemia, homocystinemia, hyperglycemia, hypertension, smoking, inflammation, and aging contribute to the development of endothelial dysfunction. Mechanisms underlying endothelial dysfunction are multiple, including impaired endothelium-derived vasodilators, enhanced endothelium-derived vasoconstrictors, over production of reactive oxygen species and reactive nitrogen species, activation of inflammatory and immune reactions, and imbalance of coagulation and fibrinolysis. Endothelial dysfunction occurs in many cardiovascular diseases, which involves different mechanisms, depending on specific risk factors affecting the disease. Among these mechanisms, a reduction in nitric oxide (NO) bioavailability plays a central role in the development of endothelial dysfunction because NO exerts diverse physiological actions, including vasodilation, anti-inflammation, antiplatelet, antiproliferation and antimigration. Experimental and clinical studies have demonstrated that a variety of currently used or investigational drugs, such as angiotensin-converting enzyme inhibitors, angiotensin AT1 receptors blockers, angiotensin-(1-7), antioxidants, beta-blockers, calcium channel blockers, endothelial NO synthase enhancers, phosphodiesterase 5 inhibitors, sphingosine-1-phosphate and statins, exert endothelial protective effects. Due to the difference in mechanisms of action, these drugs need to be used according to specific mechanisms underlying endothelial dysfunction of the disease.
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10
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Kato J, Kitamura K. Bench-to-bedside pharmacology of adrenomedullin. Eur J Pharmacol 2015; 764:140-148. [PMID: 26144371 DOI: 10.1016/j.ejphar.2015.06.061] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Revised: 06/24/2015] [Accepted: 06/30/2015] [Indexed: 01/01/2023]
Abstract
The bioactive peptide adrenomedullin (AM) exerts pleiotropic actions in various organs and tissues. In the heart, AM has an inhibitory effect on ventricular remodeling, suppressing cardiomyocyte hypertrophy and the proliferation of cardiac fibroblasts. This pharmacological property was shown not only in rat models of acute myocardial infarction, but also clinically in patients with this cardiac disease. An originally characterized feature of AM was a potent vasodilatory effect, but this peptide was found to be important for vascular integrity and angiogenesis. AM-induced angiogenesis is involved in tumor growth, while AM inhibits apoptosis of some types of tumor cell. A unique pharmacological property is anti-inflammatory activity, which has been characterized in sepsis and inflammatory bowel diseases; thus, there is an ongoing clinical trial to test the efficacy of AM for patients with intractable ulcerative colitis. These activities are assumed to be mediated via the specific receptor formed by calcitonin receptor-like receptor and receptor activity-modifying protein 2 or 3, while some questions remain to be answered about the molecular mechanisms of this signal transduction system. Taking these findings together, AM is a bioactive peptide with pleiotropic effects, with potential as a therapeutic tool for a wide range of human diseases from myocardial infarction to malignant tumors or inflammatory bowel diseases.
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Affiliation(s)
- Johji Kato
- Frontier Science Research Center, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan.
| | - Kazuo Kitamura
- Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan
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Larráyoz IM, Martínez-Herrero S, García-Sanmartín J, Ochoa-Callejero L, Martínez A. Adrenomedullin and tumour microenvironment. J Transl Med 2014; 12:339. [PMID: 25475159 PMCID: PMC4272513 DOI: 10.1186/s12967-014-0339-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 11/21/2014] [Indexed: 01/03/2023] Open
Abstract
Adrenomedullin (AM) is a regulatory peptide whose involvement in tumour progression is becoming more relevant with recent studies. AM is produced and secreted by the tumour cells but also by numerous stromal cells including macrophages, mast cells, endothelial cells, and vascular smooth muscle cells. Most cancer patients present high levels of circulating AM and in some cases these higher levels correlate with a worst prognosis. In some cases it has been shown that the high AM levels return to normal following surgical removal of the tumour, thus indicating the tumour as the source of this excessive production of AM. Expression of this peptide is a good investment for the tumour cell since AM acts as an autocrine/paracrine growth factor, prevents apoptosis-mediated cell death, increases tumour cell motility and metastasis, induces angiogenesis, and blocks immunosurveillance by inhibiting the immune system. In addition, AM expression gets rapidly activated by hypoxia through a HIF-1α mediated mechanism, thus characterizing AM as a major survival factor for tumour cells. Accordingly, a number of studies have shown that inhibition of this peptide or its receptors results in a significant reduction in tumour progression. In conclusion, AM is a great target for drug development and new drugs interfering with this system are being developed.
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Affiliation(s)
- Ignacio M Larráyoz
- Oncology Area, Center for Biomedical Research of La Rioja CIBIR, C/Piqueras 98, Logroño, 26006, Spain.
| | - Sonia Martínez-Herrero
- Oncology Area, Center for Biomedical Research of La Rioja CIBIR, C/Piqueras 98, Logroño, 26006, Spain.
| | - Josune García-Sanmartín
- Oncology Area, Center for Biomedical Research of La Rioja CIBIR, C/Piqueras 98, Logroño, 26006, Spain.
| | - Laura Ochoa-Callejero
- Oncology Area, Center for Biomedical Research of La Rioja CIBIR, C/Piqueras 98, Logroño, 26006, Spain.
| | - Alfredo Martínez
- Oncology Area, Center for Biomedical Research of La Rioja CIBIR, C/Piqueras 98, Logroño, 26006, Spain.
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