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Jiang K, Dong C, Yin Z, Li R, Mao J, Wang C, Zhang J, Gao Z, Liang R, Wang Q, Wang L. Exosome-derived ENO1 regulates integrin α6β4 expression and promotes hepatocellular carcinoma growth and metastasis. Cell Death Dis 2020; 11:972. [PMID: 33184263 PMCID: PMC7661725 DOI: 10.1038/s41419-020-03179-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/27/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023]
Abstract
Alpha-enolase (ENO1) has been found to be dysregulated in several human malignancies, including hepatocellular carcinoma (HCC). Although the role of ENO1 as a glycolytic enzyme in HCC cells has been well characterized, little is known about the other roles of ENO1, especially exosome-derived ENO1, in regulating HCC progression. Here, we demonstrated that ENO1 is frequently upregulated in HCC cells or tissues, with even higher expression in highly metastatic HCC cells or metastatic tissues as well as in exosomes derived from highly metastatic sources. Moreover, ENO1 expression is associated with the tumor-node-metastasis (TNM) stage, differentiation grade and poor prognosis in HCC patients. Surprisingly, ENO1 can be transferred between HCC cells via exosome-mediated crosstalk, exhibiting an effect similar to that of ENO1 overexpression in HCC cells, which promoted the growth and metastasis of HCC cells with low ENO1 expression by upregulating integrin α6β4 expression and activating the FAK/Src-p38MAPK pathway. In summary, our data suggest that exosome-derived ENO1 is essential to promoting HCC growth, metastasis, and further patient deterioration. The findings from this study implicate a novel biomarker for the clinical evaluation of HCC progression, especially the prediction of HCC metastatic risk.
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Affiliation(s)
- Keqiu Jiang
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Chengyong Dong
- Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Zeli Yin
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Rui Li
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Jiakai Mao
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Chengye Wang
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Junlin Zhang
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Zhenming Gao
- Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Rui Liang
- Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China
| | - Qi Wang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.
| | - Liming Wang
- Engineering Research Center for New Materials and Precision Treatment Technology of Malignant Tumors Therapy, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China. .,Engineering Technology Research Center for Translational Medicine, Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China. .,Division of Hepatobiliary and Pancreatic Surgery, Department of General Surgery, The Second Affiliated Hospital of Dalian Medical University, NO. 467 Zhongshan Road, Dalian, Liaoning, 116027, China.
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β2-Adrenergic Signalling Promotes Cell Migration by Upregulating Expression of the Metastasis-Associated Molecule LYPD3. BIOLOGY 2020; 9:biology9020039. [PMID: 32098331 PMCID: PMC7168268 DOI: 10.3390/biology9020039] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/13/2020] [Accepted: 02/20/2020] [Indexed: 12/24/2022]
Abstract
Metastasis is associated with poor prognosis in breast cancer. Although some studies suggest beta-blockers increase survival by delaying metastasis, others have been discordant. This study provides both insights into the anomalous findings and identifies potential biomarkers that may be treatment targets. Cell line models of basal-type and oestrogen receptor-positive breast cancer were profiled for basal levels of adrenoceptor gene/protein expression, and β2-adrenoceptor mediated cell behaviour including migration, invasion, adhesion, and survival in response to adrenoceptor agonist/antagonist treatment. Protein profiling and histology identified biomarkers and drug targets. Baseline levels of adrenoceptor gene expression are higher in basal-type rather than oestrogen receptor-positive cancer cells. Norepinephrine (NE) treatment increased invasive capacity in all cell lines but did not increase proliferation/survival. Protein profiling revealed the upregulation of the pro-metastatic gene Ly6/PLAUR Domain-Containing Protein 3 (LYPD3) in norepinephrine-treated MDA-MB-468 cells. Histology confirmed selective LYPD3 expression in primary and metastatic breast tumour samples. These findings demonstrate that basal-type cancer cells show a more aggressive adrenoceptor-β2-activated phenotype in the resting and stimulated state, which is attenuated by adrenoceptor-β2 inhibition. This study also highlights the first association between ADRβ2 signalling and LYPD3; its knockdown significantly reduced the basal and norepinephrine-induced activity of MCF-7 cells in vitro. The regulation of ADRβ2 signalling by LYPD3 and its metastasis promoting activities, reveal LYPD3 as a promising therapeutic target in the treatment of breast and other cancers.
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Jiang Y, Lin L, Chen S, Jiang L, Kriegbaum MC, Gårdsvoll H, Hansen LV, Li J, Ploug M, Yuan C, Huang M. Crystal Structures of Human C4.4A Reveal the Unique Association of Ly6/uPAR/α-neurotoxin Domain. Int J Biol Sci 2020; 16:981-993. [PMID: 32140067 PMCID: PMC7053344 DOI: 10.7150/ijbs.39919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 12/26/2019] [Indexed: 01/26/2023] Open
Abstract
Ly6/uPAR/α-neurotoxin domain (LU-domain) is characterized by the presence of 4-5 disulfide bonds and three flexible loops that extend from a core stacked by several conversed disulfide bonds (thus also named three-fingered protein domain). This highly structurally stable protein domain is typically a protein-binder at extracellular space. Most LU proteins contain only single LU-domain as represented by Ly6 proteins in immunology and α-neurotoxins in snake venom. For Ly6 proteins, many are expressed in specific cell lineages and in differentiation stages, and are used as markers. In this study, we report the crystal structures of the two LU-domains of human C4.4A alone and its complex with a Fab fragment of a monoclonal anti-C4.4A antibody. Interestingly, both structures showed that C4.4A forms a very compact globule with two LU-domain packed face to face. This is in contrast to the flexible nature of most LU-domain-containing proteins in mammals. The Fab combining site of C4.4A involves both LU-domains, and appears to be the binding site for AGR2, a reported ligand of C4.4A. This work reports the first structure that contain two LU-domains and provides insights on how LU-domains fold into a compact protein and interacts with ligands.
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Affiliation(s)
- Yunbin Jiang
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lin Lin
- Institute of Oceanography, Minjiang University, Fuzhou, 350108, China
| | - Shanli Chen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, China
| | - Longguang Jiang
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, China
| | - Mette C Kriegbaum
- Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen N, Denmark.,Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2220 Copenhagen N, Denmark
| | - Henrik Gårdsvoll
- Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen N, Denmark.,Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2220 Copenhagen N, Denmark
| | - Line V Hansen
- Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen N, Denmark
| | - Jinyu Li
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, China
| | - Michael Ploug
- Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen N, Denmark.,Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2220 Copenhagen N, Denmark
| | - Cai Yuan
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Mingdong Huang
- State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.,College of Chemistry, Fuzhou University, Fuzhou, Fujian, China
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4
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Görtz M, Galli U, Longerich T, Zöller M, Erb U, Schemmer P. De novo synthesis of C4.4A in hepatocellular carcinoma promotes migration and invasion of tumor cells. Oncol Rep 2017; 38:2697-2704. [PMID: 29048672 PMCID: PMC5780022 DOI: 10.3892/or.2017.5980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 08/31/2017] [Indexed: 01/12/2023] Open
Abstract
C4.4A is a glycoprotein that is upregulated in several human malignancies, including colorectal, breast and renal cell carcinomas. Due to its highly restricted expression in healthy tissue, C4.4A was proposed as a potential diagnostic marker. Thus, the present study was designed to evaluate C4.4A expression and function in hepatocellular carcinoma (HCC) for the first time. Immunohistochemistry was performed to detect expression of C4.4A in human sections of healthy liver, primary HCC in the liver and metastatic HCC in the lung. To assess the contribution of C4.4A to HCC progression proliferation, apoptosis, migration and invasion assays were performed with C4.4A knockdown Huh7 and HepG2 cells. C4.4A is absent in healthy liver tissue. However, intense expression was seen in 59% of primary HCCs and strong expression in 80% of HCC lung metastases. C4.4A expression was also observed in human HCC cell lines, which strongly increased under hypoxic conditions. A C4.4A knock-down revealed that C4.4A is involved in both migration and invasion of HCC cells. Taken together, C4.4A expression in both primary and metastatic HCC suggests its potential value as a diagnostic marker for HCC. Due to its absence in healthy liver tissue, C4.4A might even serve as a possible therapeutic target, particularly for metastatic HCC.
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Affiliation(s)
- Magdalena Görtz
- Department of General and Transplant Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Uwe Galli
- Department of General and Transplant Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Longerich
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Margot Zöller
- Tumor Cell Biology, Department of General and Transplant Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Ulrike Erb
- Tumor Cell Biology, Department of General and Transplant Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Peter Schemmer
- Department of General and Transplant Surgery, University Hospital Heidelberg, Heidelberg, Germany
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Chen S, Lin L, Yuan C, Gårdsvoll H, Kriegbaum MC, Ploug M, Huang M. Expression and crystallographic studies of the D1D2 domains of C4.4A, a homologous protein to the urokinase receptor. Acta Crystallogr F Struct Biol Commun 2017; 73:486-490. [PMID: 28777093 PMCID: PMC5544007 DOI: 10.1107/s2053230x17009748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/02/2017] [Indexed: 12/12/2022] Open
Abstract
C4.4A is a glycosylphosphatidylinositol-anchored membrane protein comprised of two LU domains (Ly6/uPAR-like domains) and an extensively O-glycosylated C-terminal Ser/Thr/Pro-rich region. C4.4A is a novel biomarker for squamous epithelial differentiation. Its expression is dysregulated under various pathological conditions and it is a robust biomarker for poor prognosis in various malignant conditions such as pulmonary adenocarcinoma. To facilitate crystallization, the two LU domains were excised from intact C4.4A by limited proteolysis, purified and crystallized by the sitting-drop vapour-diffusion method. The crystals diffracted to 2.7 Å resolution and belonged to space group C2221, with unit-cell parameters a = 55.49, b = 119.63, c = 168.54 Å. The statistics indicated good quality of the data, which form a solid basis for the determination of the C4.4A structure.
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Affiliation(s)
- Shanli Chen
- College of Chemistry, Fuzhou Univerisity, Fuzhou, Fujian 350108, People’s Republic of China
| | - Lin Lin
- Division of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02115, USA
| | - Cai Yuan
- College of Bioscience and Biotechnology, Fuzhou Univerisity, Fuzhou, Fujian 350108, People’s Republic of China
| | - Henrik Gårdsvoll
- The Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen, Denmark
- Biotech Research and Innovation Centre, Copenhagen University, DK-2200 Copenhagen, Denmark
| | - Mette C. Kriegbaum
- The Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen, Denmark
- Biotech Research and Innovation Centre, Copenhagen University, DK-2200 Copenhagen, Denmark
| | - Michael Ploug
- The Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen, Denmark
- Biotech Research and Innovation Centre, Copenhagen University, DK-2200 Copenhagen, Denmark
| | - Mingdong Huang
- College of Chemistry, Fuzhou Univerisity, Fuzhou, Fujian 350108, People’s Republic of China
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6
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LY6/PLAUR domain containing 3 has a role in the maintenance of colorectal cancer stem-like cells. Biochem Biophys Res Commun 2017; 486:232-238. [PMID: 28238780 DOI: 10.1016/j.bbrc.2017.02.112] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 02/22/2017] [Indexed: 12/15/2022]
Abstract
Colorectal carcinoma (CRC) is one of the most frequently diagnosed cancers and the leading cause of cancer-related death for both men and women. Recent studies have revealed that a small sub-population of cancer cells, termed cancer stem-like cells (CSCs)/cancer-initiating cells (CICs), are endowed with tumor-initiating ability, self-renewal ability and differentiation ability. CSCs/CICs are resistant to current therapies including chemotherapy and radiotherapy. Thus, CSCs/CICs are responsible for recurrence and metastasis, and eradication of CSCs/CICs is essential to cure cancer. In this study, we isolated CR-CSCs/CICs as sphere-cultured cells and found that a product derived from LY6/PLAUR domain containing 3 (LYPD3) is preferentially expressed in CSCs/CICs. Gene overexpression and gene knockdown experiments revealed that LYPD3 has a role in the maintenance of CR-CSCs/CICs. The findings provide a novel molecular insight into CR-CSCs/CICs.
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7
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Liu JF, Mao L, Bu LL, Ma SR, Huang CF, Zhang WF, Sun ZJ. C4.4A as a biomarker of head and neck squamous cell carcinoma and correlated with epithelial mesenchymal transition. Am J Cancer Res 2015; 5:3505-3515. [PMID: 26885441 PMCID: PMC4731626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 10/22/2015] [Indexed: 06/05/2023] Open
Abstract
C4.4A, a member of the Ly6/uPAR family of membrane proteins, has been identified as a metastasis-associated molecule, but little is known about its actual expression and possible function in head and neck squamous cell carcinoma (HNSCC). To explore diagnostic and prognostic roles of C4.4A in HNSCC, we investigated the expression of C4.4A in human HNSCC tissue array which contains 43 HNSCC, 6 epithelial dysplasia and 16 normal oral mucosa. Expression of C4.4A was significantly increased in epithelial dysplasia and HNSCC when compared with normal oral mucosa. Moreover, high C4.4A expression indicated a rather poor prognosis of HNSCC patients. To better understand the function of C4.4A in HNSCC progression, we investigated epithelial to mesenchymal transition (EMT) associated proteins including transforming growth factor (TGF-β1), Slug and CD147 in HNSCC. The expression of TGF-β1, Slug, and CD147 was significantly increased in HNSCC when compared with normal oral mucosa. Meanwhile, the expression of C4.4A was significantly correlated with TGF-β1, Slug, and CD147 in HNSCC tissue array. Furthermore, knockdown of C4.4A decreased the cell invasion and migration in CAL27 cell line and suppressed the EMT with increased E-cadherin and decreased N-cadherin and Slug. Our study demonstrated that C4.4A was a potential marker for prognosis of HNSCC, and C4.4A participated in EMT program in HNSCC progression.
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Affiliation(s)
- Jian-Feng Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
- Department of Oral and Maxillofacial-Head and Neck Oncology, School and Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
| | - Liang Mao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
- Department of Oral and Maxillofacial-Head and Neck Oncology, School and Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
| | - Lin-Lin Bu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
| | - Si-Rui Ma
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
| | - Cong-Fa Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
| | - Wen-Feng Zhang
- Department of Oral and Maxillofacial-Head and Neck Oncology, School and Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
| | - Zhi-Jun Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
- Department of Oral and Maxillofacial-Head and Neck Oncology, School and Hospital of Stomatology, Wuhan UniversityWuhan 430079, China
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AGR3 in breast cancer: prognostic impact and suitable serum-based biomarker for early cancer detection. PLoS One 2015; 10:e0122106. [PMID: 25875093 PMCID: PMC4398490 DOI: 10.1371/journal.pone.0122106] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 02/20/2015] [Indexed: 11/19/2022] Open
Abstract
Blood-based early detection of breast cancer has recently gained novel momentum, as liquid biopsy diagnostics is a fast emerging field. In this study, we aimed to identify secreted proteins which are up-regulated both in tumour tissue and serum samples of breast cancer patients compared to normal tissue and sera. Based on two independent tissue cohorts (n = 75 and n = 229) and one serum cohort (n = 80) of human breast cancer and healthy serum samples, we characterised AGR3 as a novel potential biomarker both for breast cancer prognosis and early breast cancer detection from blood. AGR3 expression in breast tumours is significantly associated with oestrogen receptor α (P<0.001) and lower tumour grade (P<0.01). Interestingly, AGR3 protein expression correlates with unfavourable outcome in low (G1) and intermediate (G2) grade breast tumours (multivariate hazard ratio: 2.186, 95% CI: 1.008-4.740, P<0.05) indicating an independent prognostic impact. In sera analysed by ELISA technique, AGR3 protein concentration was significantly (P<0.001) elevated in samples from breast cancer patients (n = 40, mainly low stage tumours) compared to healthy controls (n = 40). To develop a suitable biomarker panel for early breast cancer detection, we measured AGR2 protein in human serum samples in parallel. The combined AGR3/AGR2 biomarker panel achieved a sensitivity of 64.5% and a specificity of 89.5% as shown by receiver operating characteristic (ROC) curve statistics. Thus our data clearly show the potential usability of AGR3 and AGR2 as biomarkers for blood-based early detection of human breast cancer.
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Bersini S, Jeon JS, Moretti M, Kamm RD. In vitro models of the metastatic cascade: from local invasion to extravasation. Drug Discov Today 2013; 19:735-42. [PMID: 24361339 DOI: 10.1016/j.drudis.2013.12.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/15/2013] [Accepted: 12/11/2013] [Indexed: 01/17/2023]
Abstract
A crucial event in the metastatic cascade is the extravasation of circulating cancer cells from blood capillaries to the surrounding tissues. The past 5 years have been characterized by a significant evolution in the development of in vitro extravasation models, which moved from traditional transmigration chambers to more sophisticated microfluidic devices, enabling the study of complex cell-cell and cell-matrix interactions in multicellular, controlled environments. These advanced assays could be applied to screen easily and rapidly a broad spectrum of molecules inhibiting cancer cell endothelial adhesion and extravasation, thus contributing to the design of more focused in vivo tests.
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Affiliation(s)
- S Bersini
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; Cell and Tissue Engineering Lab, IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, 20161 Milano, Italy
| | - J S Jeon
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Matteo Moretti
- Cell and Tissue Engineering Lab, IRCCS Istituto Ortopedico Galeazzi, Via R. Galeazzi 4, 20161 Milano, Italy.
| | - R D Kamm
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA; Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
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Thuma F, Ngora H, Zöller M. The metastasis-associated molecule C4.4A promotes tissue invasion and anchorage independence by associating with the alpha6beta4 integrin. Mol Oncol 2013; 7:917-28. [PMID: 23727360 PMCID: PMC5528461 DOI: 10.1016/j.molonc.2013.05.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Revised: 05/01/2013] [Accepted: 05/02/2013] [Indexed: 01/13/2023] Open
Abstract
C4.4A is a metastasis-associated molecule that functions appear to rely on associated alph6beta4 integrin. To corroborate the impact of the C4.4A-alpha6beta4 integrin association on metastasis formation, C4.4A was knocked-down in a highly metastatic rat pancreatic adenocarcinoma (ASML, ASML-C4.4Akd). Metastasis formation by ASML-C4.4Akd cells after intrafootpad application was strongly retarded in draining nodes and lung colonization was rare. Furthermore, cisplatin treatment significantly prolonged the survival time only of ASML-C4.4Akd-bearing rats. ASML-C4.4Akd cells display reduced migratory activity and impaired matrix protein degradation due to inefficient MMP14 activation; loss of drug-resistance is due to mitigated PI3K/Akt pathway activation. These losses of function rely on the laminin receptor C4.4A recruiting activated alpha6beta4 integrin into rafts, where C4.4A cooperates with alpha6beta4 and via alpha6beta4 with MMP14. Within this raft-located complex, MMP14 provokes focalized matrix degradation and mostly alpha6beta4 integrin promotes BAD phosphorylation and upregulated Bcl2 and BclXl expression. Thus, metastasis-promoting activities of C4.4A are not genuine characteristics of C4.4A. Instead, the raft-located laminin receptor C4.4A recruits alpha6beta4 integrin and supports via the alpha6beta4 integrin MMP14 activation. Thereby C4.4A acts as a linker to facilitate several steps in the metastatic cascade. Taking the restricted C4.4A expression in non-transformed tissue, this knowledge should pave the way toward the use of C4.4A as a therapeutic target.
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Affiliation(s)
- Florian Thuma
- Department of Tumor Cell Biology, University Hospital of Surgery, Heidelberg D-69120, Germany
| | - Honoré Ngora
- Department of Tumor Cell Biology, University Hospital of Surgery, Heidelberg D-69120, Germany
| | - Margot Zöller
- Department of Tumor Cell Biology, University Hospital of Surgery, Heidelberg D-69120, Germany
- German Cancer Research Center, Heidelberg, Germany
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