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Wu CC, Wang YH, Hu SW, Wu WL, Yeh CT, Bamodu OA. MED10 Drives the Oncogenicity and Refractory Phenotype of Bladder Urothelial Carcinoma Through the Upregulation of hsa-miR-590. Front Oncol 2022; 11:744937. [PMID: 35096564 PMCID: PMC8792749 DOI: 10.3389/fonc.2021.744937] [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: 07/21/2021] [Accepted: 12/15/2021] [Indexed: 11/15/2022] Open
Abstract
Background Dysfunctional transcription machinery with associated dysregulated transcription characterizes many malignancies. Components of the mediator complex, a principal modulator of transcription, are increasingly implicated in cancer. The mediator complex subunit 10 (MED10), a vital kinase module of the mediator, plays a critical role in bladder physiology and pathology. However, its role in the oncogenicity, metastasis, and disease recurrence in bladder cancer (BLCA) remains unclear. Objective Thus, we investigated the role of dysregulated or aberrantly expressed MED10 in the enhanced onco-aggression, disease progression, and recurrence of bladder urothelial carcinoma (UC), as well as the underlying molecular mechanism. Methods Using an array of multi-omics big data analyses of clinicopathological data, in vitro expression profiling and functional assays, and immunocytochemical staining, we assessed the probable roles of MED10 in the progression and prognosis of BLCA/UC. Results Our bioinformatics-aided gene expression profiling showed that MED10 is aberrantly expressed in patients with BLCA, is associated with high-grade disease, is positively correlated with tumor stage, and confers significant survival disadvantage. Reanalyzing the TCGA BLCA cohort (n = 454), we showed that aberrantly expressed MED10 expression is associated with metastatic and recurrent disease, disease progression, immune suppression, and therapy failure. Interestingly, we demonstrated that MED10 interacts with and is co-expressed with the microRNA, hsa-miR-590, and that CRISPR-mediated knockout of MED10 elicits the downregulation of miR-590 preferentially in metastatic UC cells, compared to their primary tumor peers. More so, silencing MED10 in SW1738 and JMSU1 UC cell lines significantly attenuates their cell proliferation, migration, invasion, clonogenicity, and tumorsphere formation (primary and secondary), with the associated downregulation of BCL-xL, MKI67, VIM, SNAI1, OCT4, and LIN28A but upregulated BAX protein expression. In addition, we showed that high MED10 expression is a non-inferior biomarker of urothelial recurrence compared with markers of cancer stemness; however, MED10 is a better biomarker of local recurrence than any of the stemness markers. Conclusion These data provide preclinical evidence that dysregulated MED10/MIR590 signaling drives onco-aggression, disease progression, and recurrence of bladder UC and that this oncogenic signal is therapeutically actionable for repressing the metastatic/recurrent phenotypes, enhancing therapy response, and shutting down stemness-driven disease progression and relapse in patients with BLCA/UC.
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Affiliation(s)
- Chia-Chang Wu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Taipei Medical University (TMU) Research Center of Urology and Kidney, Taipei Medical University, Taipei City, Taiwan.,Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City, Taiwan
| | - Yuan-Hung Wang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Su-Wei Hu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Taipei Medical University (TMU) Research Center of Urology and Kidney, Taipei Medical University, Taipei City, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wen-Ling Wu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Taipei Medical University (TMU) Research Center of Urology and Kidney, Taipei Medical University, Taipei City, Taiwan
| | - Chi-Tai Yeh
- Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Department of Medical Laboratory Science and Biotechnology, Yuanpei University of Medical Technology, Hsinchu City, Taiwan
| | - Oluwaseun Adebayo Bamodu
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.,Department of Hematology and Oncology, Cancer Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
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Jagomast T, Idel C, Klapper L, Kuppler P, Offermann A, Dreyer E, Bruchhage KL, Ribbat-Idel J, Perner S. CDK7 Predicts Worse Outcome in Head and Neck Squamous-Cell Cancer. Cancers (Basel) 2022; 14:492. [PMID: 35158760 PMCID: PMC8833595 DOI: 10.3390/cancers14030492] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/03/2022] [Accepted: 01/17/2022] [Indexed: 02/04/2023] Open
Abstract
HNSCC is the sixth most common cancer worldwide and the prognosis is still poor. Here, we investigated the prognostic implications of CDK7 and pMED1. Both proteins affect transcription, and their expression is altered throughout different tumor entities. pMED1 is phosphorylated by CDK7. Importantly, CDK7 and MED1 have been ascribed prognostic implications by various studies. However, their prognostic value in head and neck squamous-cell cancer (HNSCC) remains elusive. We applied immunohistochemical staining of CDK7 and pMED1 on our large and clinically well-characterized HNSCC tissue cohort comprising 419 patients. Software-aided quantification of staining intensity was performed as a measure of protein expression. The following results were linked to the clinicopathological features of our cohort and correlated in different tissue types (primary tumor, lymph node metastasis, distant metastasis, recurrence). Upregulation CDK7 was associated with worse 5-year overall survival as well as disease-free survival in HNSCC while being independent of other known prognostic factors such as p16-status. Also, CDK7 expression was significantly elevated in immune cell infiltrated tumors. In HNSCC CDK7 might serve as a novel prognostic marker to indicate the prognosis of patients. Furthermore, in vitro studies proved the feasibility of CDK7 inhibition with attenuating effects on cell proliferation underlining its remarkable translational potential for future therapeutic regimes.
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Affiliation(s)
- Tobias Jagomast
- Institute of Pathology, University of Luebeck and University Hospital Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (L.K.); (P.K.); (A.O.); (E.D.); (S.P.)
| | - Christian Idel
- Department of Otorhinolaryngology, University of Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (C.I.); (K.-L.B.)
| | - Luise Klapper
- Institute of Pathology, University of Luebeck and University Hospital Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (L.K.); (P.K.); (A.O.); (E.D.); (S.P.)
| | - Patrick Kuppler
- Institute of Pathology, University of Luebeck and University Hospital Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (L.K.); (P.K.); (A.O.); (E.D.); (S.P.)
| | - Anne Offermann
- Institute of Pathology, University of Luebeck and University Hospital Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (L.K.); (P.K.); (A.O.); (E.D.); (S.P.)
| | - Eva Dreyer
- Institute of Pathology, University of Luebeck and University Hospital Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (L.K.); (P.K.); (A.O.); (E.D.); (S.P.)
| | - Karl-Ludwig Bruchhage
- Department of Otorhinolaryngology, University of Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (C.I.); (K.-L.B.)
| | - Julika Ribbat-Idel
- Institute of Pathology, University of Luebeck and University Hospital Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (L.K.); (P.K.); (A.O.); (E.D.); (S.P.)
| | - Sven Perner
- Institute of Pathology, University of Luebeck and University Hospital Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany; (L.K.); (P.K.); (A.O.); (E.D.); (S.P.)
- Pathology, Research Center Borstel, Leibniz Lung Center, Parkallee 1-40, 23845 Borstel, Germany
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Guo Z, Ye H, Zheng X, Yin W, He J. Extracellular vesicle-encapsulated microRNA-425-derived from drug-resistant cells promotes non-small-cell lung cancer progression through DAPK1-medicated PI3K/AKT pathway. J Cell Physiol 2021; 236:3808-3820. [PMID: 33258116 DOI: 10.1002/jcp.30126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 10/11/2020] [Accepted: 10/13/2020] [Indexed: 12/24/2022]
Abstract
Investigations in the area of tumor-derived extracellular vesicles (EVs) open a new horizon in developing cancer biology and its potential as cancer biomarkers. Following this prospect, we aimed to identify that the role of successfully isolated EVs from drug-resistance cells in the progression of non-small-cell lung cancer (NSCLC). P-EVs and R-EVs secreted by A549 cells and drug-resistant A549-R cells respectively were extracted and characterized. The targeting relationship between miR-425 and MED1 was verified. Cell proliferation, invasion, migration and apoptosis after treatment of P-EVs, R-EVs, miR-425 inhibitor, miR-425 mimic, pcDNA-MED1, or phosphatidylinositol-3-kinase (PI3K)/AKT inhibitor LY294002 were detected. Furthermore, xenograft tumor in nude mice was established for further confirming our in vitro findings. P-EVs and R-EVs were successfully extracted and could be internalized by A549 cells. A549-R cells and R-EVs showed higher miR-425 expression compared with A549 cells and P-EVs, respectively. miR-425 delivered by R-EVs could promote the proliferation, migration, and invasion, while inhibit apoptosis of NSCLC cells. MED1 was the target gene of miR-425. EVs-encapsulated miR-425-derived from A549-R cells could promote the progression of NSCLC in vivo through regulating DAPK1-medicated PI3K/AKT pathway. Moreover, miR-425 delivered by R-EVs promoted tumorigenesis in vivo. Taken together, the result suggested that EVs-delivered miR-425-derived from A549-R cells promoted the progression of NSCLC through regulating DAPK1-medicated PI3K/AKT signaling pathway.
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Affiliation(s)
- Zhihua Guo
- State Key Laboratory of Respiratory Disease, Department of Thoracic Surgery and Oncology, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Huangyang Ye
- Department of Medical Oncology, Cancer Hospital, The First Affiliated Hospital of Xiamen University, Teaching Hospital of Fujian Medical University, Xiamen, China
| | - Xiaobin Zheng
- Department of Medical Thoracic Oncology, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, China
| | - Weiqiang Yin
- State Key Laboratory of Respiratory Disease, Department of Thoracic Surgery and Oncology, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jianxing He
- State Key Laboratory of Respiratory Disease, Department of Thoracic Surgery and Oncology, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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He H, Dai J, Yang X, Wang X, Sun F, Zhu Y. Silencing of MED27 inhibits adrenal cortical carcinogenesis by targeting the Wnt/β-catenin signaling pathway and the epithelial-mesenchymal transition process. Biol Chem 2018; 399:593-602. [PMID: 29730647 DOI: 10.1515/hsz-2017-0304] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 03/25/2018] [Indexed: 11/15/2022]
Abstract
Abstract
This study aimed to explore the effect of MED27 on the expression of epithelial-mesenchymal transition (EMT)-related proteins and β-catenin in adrenal cortical carcinoma (ACC). The functional mechanism of MED27 on ACC processes was also explored. The expression of MED27 was assessed by quantitative real-time polymerase chain reaction (qRT-PCR). siRNA was utilized to knockdown the expression of MED27. CCK8 assays were performed to evaluate SW-13 cell proliferation. Transwell assays were performed to assess the invasion ability, and wound healing assays were utilized to detect migration. A tumor xenograft mouse model was established to investigate the impact of silencing MED27 on tumor growth and metastasis. MED27 was highly expressed in ACC tissues and cells. Down-regulation of MED27 induced ACC cell apoptosis, and significantly attenuated ACC cell proliferation, invasion and metastasis in vivo and in vitro. MED27 knockdown regulated the expression of EMT-related proteins and Wnt/β-catenin signaling pathway-related proteins. Our study investigated the function and mechanism of MED27 and validated that MED27 plays a negative role in ACC occurrence and progression and could be utilized as a new therapeutic target in ACC prevention and treatment.
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Affiliation(s)
- Hongchao He
- Department of Urology , Shanghai Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine , No. 197, Ruijin Er Road , Shanghai 200025 , China
| | - Jun Dai
- Department of Urology , Shanghai Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine , No. 197, Ruijin Er Road , Shanghai 200025 , China
| | - Xiaoqun Yang
- Department of Pathology , Shanghai Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine , Shanghai 200025 , China
| | - Xiaojing Wang
- Department of Urology , Shanghai Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine , No. 197, Ruijin Er Road , Shanghai 200025 , China
| | - Fukang Sun
- Department of Urology , Shanghai Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine , No. 197, Ruijin Er Road , Shanghai 200025 , China
| | - Yu Zhu
- Department of Urology , Shanghai Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine , No. 197, Ruijin Er Road , Shanghai 200025 , China
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Kim HJ, Yun J. Checkpoint-dependent phosphorylation of Med1/TRAP220 in response to DNA damage. Acta Biochim Biophys Sin (Shanghai) 2017; 49:496-502. [PMID: 28430840 DOI: 10.1093/abbs/gmx036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Indexed: 12/11/2022] Open
Abstract
Mediator complex subunit 1 (Med1)/Thyroid hormone receptor-associated protein 220 (TRAP220), an essential component of thyroid hormone receptor-associated proteins (TRAP)/mediator, plays important roles in hormone responses and tumorigenesis. However, the role of Med1 in the DNA damage response has not been studied. In this study, we found that DNA damage, resulted from γ-irradiation, ultraviolet (UV)-irradiation, or hydroxyurea, induced phosphorylation of Med1 in vivo. Phosphorylation of Med1 was abrogated by either caffeine or wortmannin treatment, suggesting that Med1 is phosphorylated through the DNA damage checkpoint pathway. A checkpoint kinase 1 (Chk1)/checkpoint kinase 2 (Chk2) consensus phosphorylation motif was identified at Serine 671 of Med1 and Ser671 motif was primarily phosphorylated by Chk2 in vitro. Moreover, the in vivo phosphorylation of Med1 was abrogated by a Chk2 inhibitor, and physical interaction between Chk2 and Med1 was observed, confirming that Chk2 is responsible for Med1 phosphorylation upon DNA damage. These results suggest that Med1 is a novel target for the DNA damage checkpoint pathway and may participate in the DNA damage response. Consistent with this notion, knockdown of Med1 expression caused a significant increase in cellular sensitivity to UV irradiation. Moreover, microarray analysis revealed that the UV-induced activation of the transcription of important regulators of cell cycle control and DNA repair, including p21, Gadd45, Rad50, DnaJ, and RecQL, was impaired upon Med1 knockdown. Taken together, our data suggest that Med1 is a novel target for Chk2-mediated phosphorylation and may play a role in cellular DNA damage responses by mediating proper induction of gene transcription upon DNA damage.
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Affiliation(s)
- Hyun-Ju Kim
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan 49201, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan 49201, Korea
| | - Jeanho Yun
- Peripheral Neuropathy Research Center, College of Medicine, Dong-A University, Busan 49201, Korea
- Department of Biochemistry, College of Medicine, Dong-A University, Busan 49201, Korea
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Klümper N, Syring I, Vogel W, Schmidt D, Müller SC, Ellinger J, Shaikhibrahim Z, Brägelmann J, Perner S. Mediator Complex Subunit MED1 Protein Expression Is Decreased during Bladder Cancer Progression. Front Med (Lausanne) 2017; 4:30. [PMID: 28367434 PMCID: PMC5355444 DOI: 10.3389/fmed.2017.00030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 03/03/2017] [Indexed: 01/03/2023] Open
Abstract
Introduction Bladder cancer (BCa) is among the most frequent cancer entities and relevantly contributes to cancer-associated deaths worldwide. The multi-protein Mediator complex is a central regulator of the transcriptional machinery of protein-coding genes and has been described to be altered in several malignancies. MED1, a subunit of the tail module, was described to negatively modulate expression of metastasis-related genes and to be downregulated in melanoma and lung cancer. In contrast, MED1 hyperactivity was described in breast and prostate cancer, likely due its function as a hub for nuclear hormone receptors. So far, only little is known about the function of the Mediator complex in BCa. The aim of this study was therefore to investigate the role of MED1 in BCa as a prognostic biomarker and a biomarker of disease progression. Methods The protein expression of MED1 was assessed by immunohistochemistry (IHC) on tissue microarrays from 224 patients: benign urothelium n = 31, non-muscle invasive BCa (pTis, pT1) n = 72, and muscle invasive BCa (pT2–T4) n = 121. Comprehensive clinicopathological information including follow-up were available. Quantification of MED1 protein expression was evaluated by the semiquantitative image analysis program Definiens. Results MED1 expression significantly decreased during BCa progression from benign urothelium to advanced BCa. Muscle invasion, the crucial step in BCa progression, was associated with low MED1 protein expression. Accordingly, decreased MED1 expression was found in primary BCa samples with positive lymphonodal status and distant metastases. Furthermore, cancer-specific survival was significantly worse in the group of low MED1 expression. Conclusion Our findings show that the downregulation of MED1 is associated with muscle invasion, metastatic spread, and shorter overall survival in BCa.
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Affiliation(s)
- Niklas Klümper
- Pathology of the University Medical Center Schleswig-Holstein, Campus Luebeck and the Research Center Borstel, Leibniz Center for Medicine and Biosciences , Luebeck , Germany
| | - Isabella Syring
- Clinic for Urology and Pediatric Urology, University Hospital of Bonn , Bonn , Germany
| | - Wenzel Vogel
- Pathology of the University Medical Center Schleswig-Holstein, Campus Luebeck and the Research Center Borstel, Leibniz Center for Medicine and Biosciences , Luebeck , Germany
| | - Doris Schmidt
- Clinic for Urology and Pediatric Urology, University Hospital of Bonn , Bonn , Germany
| | - Stefan C Müller
- Clinic for Urology and Pediatric Urology, University Hospital of Bonn , Bonn , Germany
| | - Jörg Ellinger
- Clinic for Urology and Pediatric Urology, University Hospital of Bonn , Bonn , Germany
| | - Zaki Shaikhibrahim
- Pathology of the University Medical Center Schleswig-Holstein, Campus Luebeck and the Research Center Borstel, Leibniz Center for Medicine and Biosciences , Luebeck , Germany
| | - Johannes Brägelmann
- Pathology of the University Medical Center Schleswig-Holstein, Campus Luebeck and the Research Center Borstel, Leibniz Center for Medicine and Biosciences, Luebeck, Germany; Department of Hematology, Oncology and Rheumatology, University Hospital of Bonn, Bonn, Germany
| | - Sven Perner
- Pathology of the University Medical Center Schleswig-Holstein, Campus Luebeck and the Research Center Borstel, Leibniz Center for Medicine and Biosciences , Luebeck , Germany
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Kwon KA, Yun J, Oh SY, Seo BG, Lee S, Lee JH, Kim SH, Choi HJ, Roh MS, Kim HJ. Clinical Significance of Peroxisome Proliferator-Activated Receptor γ and TRAP220 in Patients with Operable Colorectal Cancer. Cancer Res Treat 2015; 48:198-207. [PMID: 26130665 PMCID: PMC4720060 DOI: 10.4143/crt.2015.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 03/30/2015] [Indexed: 11/21/2022] Open
Abstract
Purpose The peroxisome proliferator-activated receptor γ (PPARγ) is a nuclear receptor that regulates expression of mediators of lipid metabolism and the inflammatory response. Thyroid hormone receptor-associated proteins 220 (TRAP220) is an essential component of the TRAP/Mediator complex. The objective of this study was to clarify whether PPARγ or TRAP220 are significant prognostic markers in resectable colorectal cancer (CRC). Materials and Methods A total of 399 patients who underwent curative resection for CRC were enrolled. We investigated the presence of PPARγ and TARP220 in CRC tissues and adjacent normal tissues by immunohistochemistry. Correlation between the expression of these factors and clinicopathologic features and survival was investigated. Results Median age of the patients was 63 years (range, 22 to 87 years), and median follow-up duration 61.1 months (range, 2 to 114 months). PPARγ and TRAP220 expression showed significant correlation with depth of invasion (p=0.013 and p=0.001, respectively). Expression of TRAP220 also showed association with lymph node metastasis and TNM stage (p=0.001). Compared with patients with TRAP220 negative tumors, patients with TRAP220 positive tumors had longer 5-year disease-free survival (DFS) tendency (p=0.051). Patients who were PPARγ positive combined with TRAP220 positive had a better 5-year DFS (64.8% vs. 79.3%, p=0.013). In multivariate analysis expression of both PPARγ and TRAP220 significantly affected DFS (hazard ratio, 0.620; 95% confidence interval, 0.379 to 0.997; p=0.048). Conclusion TRAP220 may be a valuable marker for nodal metastasis and TNM stage. Tumor co-expression of PPARγ and TRAP220 represents a biomarker for good prognosis in CRC patients.
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Affiliation(s)
- Kyung A Kwon
- Division of Hematology-Oncology, Department of Internal Medicine, Dongnam Institute of Radiological and Medical Sciences, Busan, Korea
| | - Jeanho Yun
- Department of Biochemistry, Dong-A University College of Medicine, Busan, Korea
| | - Sung Yong Oh
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Bong-Gun Seo
- Division of Hematology-Oncology, Department of Internal Medicine, Dongnam Institute of Radiological and Medical Sciences, Busan, Korea
| | - Suee Lee
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Ji-Hyun Lee
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Sung-Hyun Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
| | - Hong Jo Choi
- Department of Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Mee Sook Roh
- Department of Pathology, Dong-A University College of Medicine, Busan, Korea
| | - Hyo-Jin Kim
- Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea
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Ahn S, Hwangbo W, Kim H, Kim CH. Naked cuticle Drosophila 1 expression in histologic subtypes of small adenocarcinoma of the lung. KOREAN JOURNAL OF PATHOLOGY 2013; 47:211-8. [PMID: 23837013 PMCID: PMC3701816 DOI: 10.4132/koreanjpathol.2013.47.3.211] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 04/05/2013] [Accepted: 04/23/2013] [Indexed: 01/15/2023]
Abstract
Background Naked cuticle Drosophila 1 (NKD1) has been related to non-small cell lung cancer in that decreased NKD1 levels have been associated with both poor prognosis and increased invasive quality. Methods Forty cases of lung adenocarcinoma staged as Tis or T1a were selected. Cases were subclassified into adenocarcinoma in situ (AIS), minimally invasive adenocarcinoma (MIA), and small adenocarcinoma (SAD). Immunohistochemical studies for NKD1 were performed. Results Forty samples comprised five cases of AIS (12.5%), eight of MIA (20.0%), and 27 of SAD (67.5%). AIS and MIA showed no lymph node metastasis and 100% disease-free survival, whereas among 27 patients with SAD, 2 (7.4%) had lymph node metastasis, and 3 (11.1%) died from the disease. Among the 40 cases, NKD1-reduced expression was detected in 8 (20%) samples, whereas normal expression was found in 15 (37.5%) and overexpression in 17 (42.5%). Loss of NKD1 expression was significantly associated with lymph node metastasis (p=0.001). All cases with predominant papillary pattern showed overexpression of NKD1 (p=0.026). Conclusions Among MIA and SAD, MIA had better outcomes than SAD. Down-regulated NKD1 expression was closely associated with nodal metastasis, and overexpression was associated with papillary predominant adenocarcinoma.
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Affiliation(s)
- Sangjeong Ahn
- Department of Pathology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
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Kim HJ, Roh MS, Son CH, Kim AJ, Jee HJ, Song N, Kim M, Seo SY, Yoo YH, Yun J. Loss of Med1/TRAP220 promotes the invasion and metastasis of human non-small-cell lung cancer cells by modulating the expression of metastasis-related genes. Cancer Lett 2012; 321:195-202. [DOI: 10.1016/j.canlet.2012.02.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 02/06/2012] [Accepted: 02/07/2012] [Indexed: 11/29/2022]
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Takuwa T, Ishii G, Nagai K, Yoshida J, Nishimura M, Hishida T, Neri S, Hasegawa S, Ochiai A. Characteristic immunophenotype of solid subtype component in lung adenocarcinoma. Ann Surg Oncol 2012; 19:3943-52. [PMID: 22669454 DOI: 10.1245/s10434-012-2428-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Indexed: 12/27/2022]
Abstract
BACKGROUND Lung adenocarcinomas represent a morphologically heterogeneous tumor composed of an admixture of different histologic subtypes (lepidic, papillary, acinar, and solid subtype). The presence of a solid subtype component is reported to be associated with a poorer prognosis. The aim of this study was to evaluate the characteristic immunophenotype of the solid subtype component compared with the immunophenotypes of other components. METHODS We analyzed the clinicopathological characteristics of stage I adenocarcinoma patients with predominant solid subtype disease. Furthermore, we immunostained adenocarcinomas with predominant lepidic, papillary, acinar, and solid subtype components (n = 23 each) for 10 molecular markers of tumor invasiveness and scored the results. RESULTS Patients showing predominance of the solid subtype component (solid subtype adenocarcinoma) had a poorer prognosis than those showing predominance of the lepidic, papillary, or acinar component. Lymphovascular invasion was more often detected in solid subtype tumors than in others. The solid subtype component showed a significantly stronger staining intensity of laminin-5 expression than the lepidic, papillary, and acinar components (P < 0.001, P < 0.001, and P = 0.016, respectively). The fibronectin and vimentin expression levels were also significantly higher in the solid subtype component than in other components. This immunostaining character was validated by using mixed-subtype adenocarcinomas containing all four components in the same tumor. CONCLUSIONS This study concluded that the solid subtype component in lung adenocarcinomas exhibit the invasive immunophenotype, including increased laminin-5 expression, compared with the other components, which may be associated with a poorer prognosis.
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Affiliation(s)
- Teruhisa Takuwa
- Pathology Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan
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Unraveling framework of the ancestral Mediator complex in human diseases. Biochimie 2011; 94:579-87. [PMID: 21983542 DOI: 10.1016/j.biochi.2011.09.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Accepted: 09/15/2011] [Indexed: 01/13/2023]
Abstract
Mediator (MED) is a fundamental component of the RNA polymerase II-mediated transcription machinery. This multiprotein complex plays a pivotal role in the regulation of eukaryotic mRNA synthesis. The yeast Mediator complex consists of 26 different subunits. Recent studies indicate additional pathogenic roles for Mediator, for example during transcription elongation and non-coding RNA production. Mediator subunits have been emerging also to have pathophysiological roles suggesting MED-dependent therapeutic targets involving in several diseases, such as cancer, cardiovascular disease (CVD), metabolic and neurological disorders.
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Mediator and human disease. Semin Cell Dev Biol 2011; 22:776-87. [PMID: 21840410 DOI: 10.1016/j.semcdb.2011.07.024] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 07/25/2011] [Accepted: 07/28/2011] [Indexed: 01/21/2023]
Abstract
Since the identification of a metazoan counterpart to yeast Mediator nearly 15 years ago, a convergent body of biochemical and molecular genetic studies have confirmed their structural and functional relationship as an integrative hub through which regulatory information conveyed by signal activated transcription factors is transduced to RNA polymerase II. Nonetheless, metazoan Mediator complexes have been shaped during evolution by substantive diversification and expansion in both the number and sequence of their constituent subunits, with important implications for the development of multicellular organisms. The appearance of unique interaction surfaces within metazoan Mediator complexes for transcription factors of diverse species-specific origins extended the role of Mediator to include an essential function in coupling developmentally coded signals with precise gene expression output sufficient to specify cell fate and function. The biological significance of Mediator in human development, suggested by genetic studies in lower metazoans, is emphatically illustrated by an expanding list of human pathologies linked to genetic variation or aberrant expression of its individual subunits. Here, we review our current body of knowledge concerning associations between individual Mediator subunits and specific pathological disorders. When established, molecular etiologies underlying genotype-phenotype correlations are addressed, and we anticipate that future progress in this critical area will help identify therapeutic targets across a range of human pathologies.
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Chen L, Liang Z, Tian Q, Li C, Ma X, Zhang Y, Yang Z, Wang P, Li Y. Overexpression of LCMR1 is significantly associated with clinical stage in human NSCLC. J Exp Clin Cancer Res 2011; 30:18. [PMID: 21306606 PMCID: PMC3045976 DOI: 10.1186/1756-9966-30-18] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Accepted: 02/09/2011] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Lung cancer is one of the most common human cancers and the leading cause of cancer death worldwide. The identification of lung cancer associated genes is essential for lung cancer diagnosis and treatment. METHODS Differential Display-PCR technique was used to achieve the novel cDNA, which were then verified by real-time PCR. Northern blot was utilized to observe the expression of LCMR1 in different human tissues. 84 cases human NSCLC tissues and normal counterparts were analyzed for the expression of LCMR1 by immunohistochemistry. RESULTS A novel 778-bp cDNA fragment from human large cell lung carcinoma cell lines 95C and 95D was obtained, and named LCMR1 (Lung Cancer Metastasis Related protein 1). LCMR1 was differentially expressed in different human tissues. LCMR1 was strongly overexpressed in NSCLC and its expression was significantly associated with clinical stage. CONCLUSION Our data indicated that LCMR1, strongly overexpressed in NSCLC, might have applications in the clinical diagnosis and treatment of lung cancer.
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Affiliation(s)
- Liangan Chen
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Zhixin Liang
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Qing Tian
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Chunsun Li
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Xiuqing Ma
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Yu Zhang
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Zhen Yang
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Ping Wang
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Yanqin Li
- Department of Respiratory Diseases, Chinese PLA General Hospital, Beijing 100853, PR China
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