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Zabini A, Zimmer Y, Medová M. Beyond keratinocyte differentiation: emerging new biology of small proline-rich proteins. Trends Cell Biol 2023; 33:5-8. [PMID: 36057494 DOI: 10.1016/j.tcb.2022.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/04/2022] [Accepted: 08/08/2022] [Indexed: 12/27/2022]
Abstract
Small proline-rich proteins (SPRRPs) are traditionally known for their function in keratinocyte homeostasis. Recent evidence demonstrates their involvement in additional diverse physiological processes ranging from p53 signaling and direct prevention of DNA damage to bactericidal activities. We highlight these novel, intriguing roles of SPRRPs and discuss them in the context of relevant pathological conditions.
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Affiliation(s)
- Adam Zabini
- Department of Radiation Oncology, Inselspital, Bern University Hospital, Freiburgstrasse 8, 3008 Bern, Switzerland; Department for BioMedical Research, Radiation Oncology, University of Bern, Murtenstrasse 35, 3008 Bern, Switzerland
| | - Yitzhak Zimmer
- Department of Radiation Oncology, Inselspital, Bern University Hospital, Freiburgstrasse 8, 3008 Bern, Switzerland; Department for BioMedical Research, Radiation Oncology, University of Bern, Murtenstrasse 35, 3008 Bern, Switzerland
| | - Michaela Medová
- Department of Radiation Oncology, Inselspital, Bern University Hospital, Freiburgstrasse 8, 3008 Bern, Switzerland; Department for BioMedical Research, Radiation Oncology, University of Bern, Murtenstrasse 35, 3008 Bern, Switzerland.
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2
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Single-cell transcriptomic analysis reveals the critical molecular pattern of UV-induced cutaneous squamous cell carcinoma. Cell Death Dis 2021; 13:23. [PMID: 34934042 PMCID: PMC8692455 DOI: 10.1038/s41419-021-04477-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 12/01/2021] [Accepted: 12/14/2021] [Indexed: 12/12/2022]
Abstract
Cutaneous squamous cell carcinoma (cSCC) is the second most common nonmelanoma skin cancer characterized by high invasiveness, heterogeneity, and mainly occurs in the ultraviolet (UV)-exposed regions of the skin, but its pathogenesis is still unclear. Here, we generated single-cell transcriptome profiles for 350 cells from six primary UV-induced cSCCs, together with matched adjacent skin samples, and three healthy control skin tissues by single-cell RNA-sequencing technology based on Smart-seq2 strategy. A series of bioinformatics analyses and in vitro experiments were used to decipher and validate the critical molecular pattern of cSCC. Results showed that cSCC cells and normal keratinocytes were significantly distinct in gene expression and chromosomal copy number variation. Furthermore, cSCC cells exhibited 18 hallmark pathways of cancer by gene set enrichment analysis. Differential expression analysis demonstrated that many members belonging to S100 gene family, SPRR gene family, and FABP5 were significantly upregulated in cSCC cells. Further experiments confirmed their upregulation and showed that S100A9 or FABP5 knockdown in cSCC cells inhibited their proliferation and migration through NF-κB pathway. Taken together, our data provide a valuable resource for deciphering the molecular pattern in UV-induced cSCC at a single-cell level and suggest that S100A9 and FABP5 may provide novel targets for therapeutic intervention of cSCC in the future.
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Yao L, Yan J, Cheng F, Gan L, Huang Y, Zheng L, Fang N. Small Proline-Rich Protein 2B Facilitates Gastric Adenocarcinoma Proliferation via MDM2-p53/p21 Signaling Pathway. Onco Targets Ther 2021; 14:1453-1463. [PMID: 33664578 PMCID: PMC7924129 DOI: 10.2147/ott.s281032] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 01/13/2021] [Indexed: 12/29/2022] Open
Abstract
Background The small proline-rich protein 2B (SPRR2B) was firstly reported as a member of the cross-linked envelope protein in keratinocytes. The effect of SPRR2B in gastric adenocarcinoma (GC) remains unclear. This study initially explored the clinical significance of SPRR2B in GC patients as well as its role in tumor progression. Methods Immunohistochemistry was performed to characterize the expression of SPRR2B in GC tissues and adjacent tissues. The relationship between SPRR2B expression and clinicopathological features of GC patients was analyzed by Chi-square test. Kaplan-Meier method and Cox regression analyses were utilized to identify the prognostic factors of GC. Overexpression and knockdown assays were conducted to investigate possible signaling pathways downstream of SPRR2B. Flow cytometry assays were performed to evaluate cell cycle and apoptosis. Xenograft experiments were performed to validate tumor-related role of SPRR2B in vivo. Results Both mRNA and protein levels of SPRR2B in cancerous tissue were significantly higher than those in non-cancerous tissues. Meanwhile, SPRR2B expression was significantly associated with tumor size and tumor stage. Survival analysis revealed SPRR2B as one of the independent prognosis factors for overall survival of GC patients. Cellular and xenografts data implicated that silencing SPRR2B blocked the cell cycle of GC cells perhaps through MDM2-p53/p21-CDK1 pathway, while overexpressing SPRR2B exhibited opposite effects. Conclusion Our data suggest that SPRR2B may serve as a novel prognostic marker in GC, which functions at least partially by MDM2-p53/p21-CDK1 signaling pathway.
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Affiliation(s)
- Ling Yao
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, 330008, Jiangxi Province, People's Republic of China
| | - Jinhua Yan
- Department of Hematology, Third Affiliated Hospital of Nanchang University, Nanchang, 330008, Jiangxi Province, People's Republic of China
| | - Fei Cheng
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, 330008, Jiangxi Province, People's Republic of China
| | - Lihong Gan
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, 330008, Jiangxi Province, People's Republic of China
| | - Yaqin Huang
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, 330008, Jiangxi Province, People's Republic of China
| | - Li Zheng
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, 330008, Jiangxi Province, People's Republic of China
| | - Nian Fang
- Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, 330008, Jiangxi Province, People's Republic of China
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Identification of the 3-lncRNA Signature as a Prognostic Biomarker for Colorectal Cancer. Int J Mol Sci 2020; 21:ijms21249359. [PMID: 33302562 PMCID: PMC7764807 DOI: 10.3390/ijms21249359] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignant carcinomas in the world, and metastasis is the main cause of CRC-related death. However, the molecular network involved in CRC metastasis remains poorly understood. Long noncoding RNA (lncRNA) plays a vital role in tumorigenesis and may act as a competing endogenous RNA (ceRNA) to affect the expression of mRNA by suppressing miRNA function. In this study, we identified 628 mRNAs, 144 lncRNAs, and 25 miRNAs that are differentially expressed (DE) in metastatic CRC patients compared with nonmetastatic CRC patients from the Cancer Genome Atlas (TCGA) database. Functional enrichment analyses confirmed that the identified DE mRNAs are extensively involved in CRC tumorigenesis and migration. By bioinformatics analysis, we constructed a metastasis-associated ceRNA network for CRC that includes 28 mRNAs, 12 lncRNAs, and 15 miRNAs. We then performed multivariate Cox regression analysis on the ceRNA-related DE lncRNAs and identified a 3-lncRNA signature (LINC00114, LINC00261, and HOTAIR) with the greatest prognostic value for CRC. Clinical feature analysis and functional enrichment analysis further proved that these three lncRNAs are involved in CRC tumorigenesis. Finally, we used Transwell, Cell Counting Kit (CCK)-8, and colony formation assays to clarify that the inhibition of LINC00114 promotes the migratory, invasive, and proliferative abilities of CRC cells. The results of the luciferase assay suggest that LINC00114 is the direct target of miR-135a, which also verified the ceRNA network. In summary, this study provides a metastasis-associated ceRNA network for CRC and suggests that the 3-lncRNA signature may be a useful candidate for the diagnosis and prognosis of CRC.
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Yang Z, Wei X, Pan Y, Min Z, Xu J, Yu B. Colon cancer combined with obesity indicates improved survival- research on relevant mechanism. Aging (Albany NY) 2020; 12:23778-23794. [PMID: 33197880 PMCID: PMC7762486 DOI: 10.18632/aging.103972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022]
Abstract
Obesity contributes to the incidence of various tumors, including colon cancer. However, the impact of obesity on patients’ survival and related mechanisms remains unclear. Multi-omics data of 227 cases of colon cancer patients combined with clinical characteristics data were acquired from The Cancer Genome Atlas (TCGA) database. We confirmed obesity as an independent prognostic factor for improved overall survival of colon cancer patients. We demonstrated that hypoxia pathways were repressed in obese patients by regulating miR-210. Immune checkpoints PD-1 and LAG3 were also downregulated in obese patients, which indicated enhanced immune surveillance. The frequency of PIK3CA and KRAS mutations was decreased in obese patients. The sites and types of TP53 mutation were alternated in obesity patients. In conclusion, our research demonstrated the potential mechanisms of prolonged survival in colon cancer patients combined with obesity, which may provide potential value for improving the prognosis of colon cancer.
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Affiliation(s)
- Zhou Yang
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - Xiyi Wei
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210009, Jiangsu, China
| | - Yitong Pan
- Department of Bioinformatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211116, China
| | - Zhijun Min
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China
| | - Jingyuan Xu
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China.,Department of Gastroenterology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Bo Yu
- Department of General Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, China.,Department of General Surgery, Huashan Hospital Affiliated to Fudan University, Shanghai 201399, China
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Yu L, Yang Z, Liu Y, Liu F, Shang W, Shao W, Wang Y, Xu M, Wang YN, Fu Y, Xu X. Identification of SPRR3 as a novel diagnostic/prognostic biomarker for oral squamous cell carcinoma via RNA sequencing and bioinformatic analyses. PeerJ 2020; 8:e9393. [PMID: 32596058 PMCID: PMC7305774 DOI: 10.7717/peerj.9393] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 05/29/2020] [Indexed: 12/18/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) has always been one of the most aggressive and invasive cancers among oral and maxillofacial malignancies. As the morbidity and mortality of the disease have increased year by year, the search for a promising diagnostic and prognostic biomarker for the disease is becoming increasingly urgent. Tumorous and adjacent tissues were collected from three OSCC sufferers and we obtained 229 differentially expressed genes (DEGs) between tumor and normal tissues via high-throughput RNA sequence. Function and pathway enrichment analyses for DEGs were conducted to find a correlation between tumorigenesis status and DEGs. Protein interaction network and molecular complex detection (MCODE) were constructed to detect core modules. Two modules were enriched in MCODE. The diagnostic and prognostic values of the candidate genes were analyzed, which provided evidence for the candidate genes as new tumor markers. Small Proline Rich Protein 3 (SPRR3), a potential tumor marker that may be useful for the diagnosis of OSCC, was screened out. The survival analysis showed that SPRR3 under expression predicted the poor prognosis of OSCC patients. Further experiments have also shown that the expression of SPRR3 decreased as the malignancy of OSCC increased. Therefore, we believe that SPRR3 could be used as a novel diagnostic and prognostic tumor marker.
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Affiliation(s)
- Lu Yu
- Department of Implantology, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, Shandong, China
| | - Zongcheng Yang
- Department of Implantology, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, Shandong, China
| | - Yingjiao Liu
- School of Philosophy, Psychology and Language Sciences, College of Humanities and Social Science, The University of Edinburgh, Edinburgh, UK
| | - Fen Liu
- Department of Microbiology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong, China
| | - Wenjing Shang
- Department of Microbiology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong, China
| | - Wei Shao
- Department of Microbiology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong, China
| | - Yue Wang
- Department of Microbiology, Key Laboratory for Experimental Teratology of the Chinese Ministry of Education, School of Basic Medical Science, Shandong University, Jinan, Shandong, China
| | - Man Xu
- School of Medicine, Shandong University, Jinan, Shandong, China
| | - Ya-Nan Wang
- Department of Implantology, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, Shandong, China
| | - Yue Fu
- School of Medicine, Shandong University, Jinan, Shandong, China
| | - Xin Xu
- Department of Implantology, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, Shandong, China
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Nisa L, Barras D, Medová M, Aebersold DM, Medo M, Poliaková M, Koch J, Bojaxhiu B, Eliçin O, Dettmer MS, Angelino P, Giger R, Borner U, Caversaccio MD, Carey TE, Ho L, McKee TA, Delorenzi M, Zimmer Y. Comprehensive Genomic Profiling of Patient-matched Head and Neck Cancer Cells: A Preclinical Pipeline for Metastatic and Recurrent Disease. Mol Cancer Res 2018; 16:1912-1926. [PMID: 30108165 DOI: 10.1158/1541-7786.mcr-18-0056] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/28/2018] [Accepted: 08/07/2018] [Indexed: 11/16/2022]
Abstract
Metastases and tumor recurrence have a major prognostic impact in head and neck squamous cell carcinoma (HNSCC); however, cellular models that comprehensively characterize metastatic and recurrent HNSCC are lacking. To this end, we obtained genomic, transcriptomic, and copy number profiles of the UM-SCC cell line panel, encompassing patient-matched metastatic and recurrent cells. UM-SCC cells recapitulate the most prevalent genomic alterations described in HNSCC, featuring common TP53, PI3K, NOTCH, and Hippo pathway mutations. This analysis identified a novel F977Y kinase domain PIK3CA mutation exclusively present in a recurrent cell line (UM-SCC14B), potentially conferring resistance to PI3K inhibitors. Small proline-rich protein 2A (SPRR2A), a protein involved in epithelial homeostasis and invasion, was one of the most consistently downregulated transcripts in metastatic and recurrent UM-SCC cells. Assessment of SPRR2A protein expression in a clinical cohort of patients with HNSCC confirmed common SPRR2A downregulation in primary tumors (61.9% of cases) and lymph node metastases (31.3%), but not in normal tissue. High expression of SPRR2A in lymph node metastases was, along with nonoropharyngeal location of the primary tumor, an independent prognostic factor for regional disease recurrence after surgery and radiotherapy (HR 2.81; 95% CI, 1.16-6.79; P = 0.02). These results suggest that SPRR2A plays a dual role in invasion and therapeutic resistance in HNSCC, respectively through its downregulation and overexpression. IMPLICATIONS: The current study reveals translationally relevant mechanisms underlying metastasis and recurrence in HNSCC and represents an adjuvant tool for preclinical research in this disease setting. Underlining its discovery potential this approach identified a PIK3CA-resistant mutation as well as SPRR2A as possible theragnostic markers.
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Affiliation(s)
- Lluís Nisa
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department of Otorhinolaryngology - Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - David Barras
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Michaela Medová
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Daniel M Aebersold
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Matúš Medo
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Michaela Poliaková
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jonas Koch
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Beat Bojaxhiu
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Olgun Eliçin
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Paolo Angelino
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Roland Giger
- Department of Otorhinolaryngology - Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Urs Borner
- Department of Otorhinolaryngology - Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Marco D Caversaccio
- Department of Otorhinolaryngology - Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Thomas E Carey
- Department of Otolaryngology - Head and Neck Surgery, University of Michigan School of Medicine, Ann Arbor, Michigan.,Comprehensive Cancer Center, University of Michigan School of Medicine, Ann Arbor, Michigan
| | - Liza Ho
- Division of Clinical Pathology, Geneva University Hospitals, Geneva, Switzerland
| | - Thomas A McKee
- Division of Clinical Pathology, Geneva University Hospitals, Geneva, Switzerland
| | - Mauro Delorenzi
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland.,Ludwig Center for Cancer Research, University of Lausanne, Lausanne, Switzerland.,Department of Oncology, University of Lausanne, Lausanne, Switzerland
| | - Yitzhak Zimmer
- Department of Radiation Oncology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. .,Department for BioMedical Research, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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8
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Fang Z, Zhang S, Wang Y, Shen S, Wang F, Hao Y, Li Y, Zhang B, Zhou Y, Yang H. Long non-coding RNA MALAT-1 modulates metastatic potential of tongue squamous cell carcinomas partially through the regulation of small proline rich proteins. BMC Cancer 2016; 16:706. [PMID: 27586393 PMCID: PMC5009554 DOI: 10.1186/s12885-016-2735-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 07/05/2016] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND We previously described several abnormally expressed long non-coding RNA (lncRNA) in tong squamous cell carcinomas (TSCCs) that might be associated with tumor progression. In the present study, we aimed to investigate the role of abnormally expressed metastasis-associated lung adenocarcinoma transcript 1 (MALAT-1) lncRNA in the metastatic potential of TSCC cells and its molecular mechanisms. METHODS Expression levels of MALAT-1 lncRNA were examined via quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) in 127 TSCC samples as well as paired adjacent normal tissues and lymph node metastases (if exist). Lentiviral vectors expressing short hairpin RNA (shRNA) were used to knock down the expression of MALAT1 gene in two TSCC cell lines (CAL27 and SCC-25) with relatively higher MALAT-1 expression. Proliferational ability of the TSCC cells was analyzed using water soluble tetrazolium-1 (WST-1) assay. Metastatic abilities of TSCC cells were estimated in-vitro and in-vivo. We also performed a microarray-based screen to identify the genes influenced by MALAT-1 alteration, which were validated by real-time PCR analysis. RESULTS Expression of MALAT-1 lncRNA was enhanced in TSCCs, especially in those with lymph node metastasis (LNM). Knockdown (KD) of MALAT-1 lncRNA in TSCC cells led to impaired migration and proliferation ability in-vitro and fewer metastases in-vivo. DNA microarray analysis showed that several members of small proline rich proteins (SPRR) were up-regulated by KD of MALAT-1 lncRNA in TSCC cells. SPRR2A over-expression could impair distant metastasis of TSCC cells in-vivo. CONCLUSION Enhanced expression of MALAT-1 is associated with the growth and metastatic potential of TSCCs. Knock down of MALAT-1 in TSCCs leads to the up-regulation of certain SPRR proteins, which influenced the distant metastasis of TSCC cells.
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Affiliation(s)
- Zhengyu Fang
- Biomedical Research Institute, Shenzhen Peking University- The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China.,Department of Oral and Maxillofacial, Shenzhen Hospital, Peking University, Shenzhen, Guangdong Province, People's Republic of China
| | - Shanshan Zhang
- Department of Oral and Maxillofacial, Shenzhen Hospital, Peking University, Shenzhen, Guangdong Province, People's Republic of China
| | - Yufan Wang
- Department of Oral and Maxillofacial, Shenzhen Hospital, Peking University, Shenzhen, Guangdong Province, People's Republic of China
| | - Shiyue Shen
- Department of Oral and Maxillofacial, Shenzhen Hospital, Peking University, Shenzhen, Guangdong Province, People's Republic of China
| | - Feng Wang
- Department of Oral and Maxillofacial, Shenzhen Hospital, Peking University, Shenzhen, Guangdong Province, People's Republic of China
| | - Yinghua Hao
- Biomedical Research Institute, Shenzhen Peking University- The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Yuxia Li
- Biomedical Research Institute, Shenzhen Peking University- The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Bingyue Zhang
- Biomedical Research Institute, Shenzhen Peking University- The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - You Zhou
- Biomedical Research Institute, Shenzhen Peking University- The Hong Kong University of Science and Technology Medical Center, Shenzhen, Guangdong province, China
| | - Hongyu Yang
- Department of Oral and Maxillofacial, Shenzhen Hospital, Peking University, Shenzhen, Guangdong Province, People's Republic of China.
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Mizuguchi Y, Specht S, Isse K, Sasatomi E, Lunz JG, Takizawa T, Demetris AJ. Breast tumor kinase/protein tyrosine kinase 6 (Brk/PTK6) activity in normal and neoplastic biliary epithelia. J Hepatol 2015; 63:399-407. [PMID: 25770659 DOI: 10.1016/j.jhep.2015.02.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 01/23/2015] [Accepted: 02/25/2015] [Indexed: 12/04/2022]
Abstract
BACKGROUND & AIMS Breast tumor kinase (BRK) augments proliferation and promotes cell survival in breast cancers via interactions with SH2 and SH3 ligand-containing proteins, such as receptor tyrosine kinases (RTK; e.g. EGFR, ErbB2/neu). Since RTK contribute to cholangiocarcinoma (CC) evolution we probed BRK protein expression and function in normal and CC livers. METHODS Immunohistochemical staining of normal livers and CC (n=93) in a tissue microarray and three CC and an immortalized human cholangiocyte cell lines (real-time PCR, Western blotting, siRNA) were used to study the functional relationships between BRK, EGFR, ErbB2, SAM68, and SPRR2a. RESULTS BRK protein was expressed in normal human intrahepatic bile ducts; all CC cell lines and a majority of CC showed strong BRK protein expression. Multiplex immunostaining/tissue cytometry and immunoprecipitation studies showed: 1) BRK co-localized with EGFR and ErbB2/neu; 2) BRK(high)/EGFR(high)-co-expressing CC cells had significantly higher Ki67 labeling and; 3) stronger BRK protein expression was seen in perihilar and distal CC than intrahepatic CC and directly correlated with CC differentiation. In cell lines, BRK expression augmented proliferation in response to exogenous EGF, whereas BRK siRNA significantly reduced growth. The SH3 ligand-containing, SPRR2A activated pTyr342 BRK, which in turn, phosphorylated SAM68, causing nuclear localization and increased cell proliferation similar to observations in breast cancers. CONCLUSION BRK expression in a majority of CC can interact with RTK, augmenting growth and interfering with proliferation inhibitors (SAM68). Therapeutically targeting BRK function (in addition to RTK) should be of benefit for CC treatment.
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Affiliation(s)
- Yoshiaki Mizuguchi
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, PA 15260, USA; The Department of Pathology, Division of Liver and Transplantation Pathology, University of Pittsburgh Medical Center, PA 15260, USA
| | - Susan Specht
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, PA 15260, USA; The Department of Pathology, Division of Liver and Transplantation Pathology, University of Pittsburgh Medical Center, PA 15260, USA
| | - Kumiko Isse
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, PA 15260, USA; The Department of Pathology, Division of Liver and Transplantation Pathology, University of Pittsburgh Medical Center, PA 15260, USA
| | - Eizaburo Sasatomi
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, PA 15260, USA; The Department of Pathology, Division of Liver and Transplantation Pathology, University of Pittsburgh Medical Center, PA 15260, USA
| | - John G Lunz
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, PA 15260, USA; The Department of Pathology, Division of Liver and Transplantation Pathology, University of Pittsburgh Medical Center, PA 15260, USA
| | - Toshihiro Takizawa
- Department of Molecular Anatomy and Medicine, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-Ku, Tokyo 113-8602, Japan
| | - Anthony J Demetris
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, PA 15260, USA; The Department of Pathology, Division of Liver and Transplantation Pathology, University of Pittsburgh Medical Center, PA 15260, USA.
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10
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Zeng X, Tao H. Diagnostic and prognostic serum marker of cholangiocarcinoma (Review). Oncol Lett 2014; 9:3-8. [PMID: 25435926 PMCID: PMC4247112 DOI: 10.3892/ol.2014.2696] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 10/24/2014] [Indexed: 12/12/2022] Open
Abstract
Cholangiocarcinoma (CCA) is a fatal disease that is typically diagnosed late and treated ineffectively. As the morbidity and mortality rates for CCA rise markedly, patietns with CCA currently have a poor prognosis. However, if it were possible to diagnose CCA early while effective treat methods are available, CCA patients would achieve a better quality of life. Therefore, preventing the process of CCA in the early stages is an urgent problem to solve. An accurate, quick and safe method to diagnose early-stage CCA is required. The present review discusses the risk factors, status of research and certain serum markers of CCA. The sensitivity and specificity of these markers differ from each other. To explore the more accurate serum markers may be a novel direction and method for the diagnosis of CCA in laboratory medicine in the future.
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Affiliation(s)
- Xiaojun Zeng
- Department of Laboratory Medicine, Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
| | - Hualin Tao
- Department of Laboratory Medicine, Affiliated Hospital of Luzhou Medical College, Luzhou, Sichuan 646000, P.R. China
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Increased EphB2 expression predicts cholangiocarcinoma metastasis. Tumour Biol 2014; 35:10031-41. [DOI: 10.1007/s13277-014-2295-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 06/30/2014] [Indexed: 11/26/2022] Open
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Mizuguchi Y, Isse K, Specht S, Lunz JG, Corbitt N, Takizawa T, Demetris AJ. Small proline rich protein 2a in benign and malignant liver disease. Hepatology 2014; 59:1130-43. [PMID: 24123265 DOI: 10.1002/hep.26889] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 10/04/2013] [Indexed: 12/16/2022]
Abstract
UNLABELLED STAT3-driven expression of small proline rich protein 2a (SPRR2a), which acts as an src homology 3 (SH3) domain ligand, induces biliary epithelial cell (BEC) epithelial-mesenchymal transition (EMT), which, in turn, promotes wound healing. SPRR2a also quenches free radicals and protects against oxidative stress and DNA damage in nonneoplastic BEC. Sprr2a-induced EMT also increases local invasiveness of cholangiocarcinomas (CC), but prevents metastases. Understanding SPRR2a regulation of EMT has potential for therapeutic targeting in both benign and malignant liver disease. Molecular mechanisms responsible for SPRR2a-induced EMT were characterized, in vitro, and then evidence for utilization of these pathways was sought in human intrahepatic CC, in vivo, using multiplex labeling and software-assisted morphometric analysis. SPRR2a complexes with ZEB1 and CtBP on the microRNA (miR)-200c/141 promoter resulting in synergic suppression of miR-200c/141 transcription, which is required for maintenance of the BEC epithelial phenotype. SPRR2a induction promotes dephosphorylation and nuclear translocation of the SH3-domain containing protein GRB2 and an SH3-domain ligand in ZEB1 is required for SPRR2a-induced synergic suppression of miR-200c/141. Multiplex protein labeling of CC and morphometric analyses showed: 1) up-regulation of ZEB-1, and 2) down-regulation of CK19 in intrahepatic CC compared to nonneoplastic BEC, consistent with previous CC proteomic studies showing EMT during cholangiocarcinogenesis. CONCLUSION SPRR2a modulates ZEB-1 signaling by way of miR-200c/141-associated EMT through SH3-domain networks and contributes to benign and malignant BEC wound-healing responses.
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Affiliation(s)
- Yoshiaki Mizuguchi
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA; Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
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