1
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Saeinasab M, Atlasi Y, M Matin M. Functional role of lncRNAs in gastrointestinal malignancies: the peculiar case of small nucleolar RNA host gene family. FEBS J 2024; 291:1353-1385. [PMID: 36282516 DOI: 10.1111/febs.16668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/18/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022]
Abstract
Long noncoding RNAs (lncRNAs) play crucial roles in normal physiology and are often de-regulated in disease states such as cancer. Recently, a class of lncRNAs referred to as the small nucleolar RNA host gene (SNHG) family have emerged as important players in tumourigenesis. Here, we discuss new findings describing the role of SNHGs in gastrointestinal tumours and summarize the three main functions by which these lncRNAs promote carcinogenesis, namely: competing with endogenous RNAs, modulating protein function, and regulating epigenetic marking. Furthermore, we discuss how SNHGs participate in different hallmarks of cancer, and how this class of lncRNAs may serve as potential biomarkers in cancer diagnosis and therapy.
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Affiliation(s)
- Morvarid Saeinasab
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Iran
| | - Yaser Atlasi
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, UK
| | - Maryam M Matin
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Iran
- Novel Diagnostics and Therapeutics Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Iran
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2
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Al-Hawary SIS, Rodrigues P, Bangali H, Hassan ZF, Elawady A. The role of long noncoding RNA DGCR5 in cancers: Focus on molecular targets. Cell Biochem Funct 2024; 42:e3949. [PMID: 38379219 DOI: 10.1002/cbf.3949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/17/2024] [Accepted: 01/19/2024] [Indexed: 02/22/2024]
Abstract
Long noncoding RNAs (lncRNAs) are major components of cellular transcripts that are emerging as important players in various biological pathways. Due to their specific expression and functional diversity in a variety of cancers, lncRNAs have promising applications in cancer diagnosis, prognosis, and therapy. Studies have shown that lncRNA DiGeorge syndrome critical region gene 5 (DGCR5) with high specificity and accuracy has the potential to become biomarkers in cancers. LncRNA DGCR5 can be noninvasively extracted from body fluids, tissues, and cells, and can be used as independent or auxiliary biomarkers to improve the accuracy of diagnosis or prognosis. Now, the underlying mechanisms of lncRNAs such as DGCR5 were explored as therapeutic targets, which have been investigated in clinical trials of several cancers. The DGCR5 lacks an appropriate animal model, which is necessary to gain greater knowledge of their functions. While some studies on the uses of DGCR5 have been carried out, the small sample size makes them unreliable. In this review, we presented a compilation of recent publications addressing the potential of lncRNA DGCR5 that could be considered as biomarkers or therapeutic targets, with the hopes of providing promised implications for future cancer therapy.
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Affiliation(s)
| | - Paul Rodrigues
- Department of Computer Engineering, College of Computer Science, King Khalid University, Al-Faraa, Saudi Arabia
| | - Harun Bangali
- Department of Computer Engineering, College of Computer Science, King Khalid University, Al-Faraa, Saudi Arabia
| | | | - Ahmed Elawady
- College of Technical Engineering, The Islamic University, Najaf, Iraq
- College of Technical Engineering, The Islamic University of Al Diwaniyah, Al Diwaniyah, Iraq
- College of Technical Engineering, The Islamic University of Babylon, Babylon, Iraq
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3
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Cheng J, Tang YC, Dong Y, Qin RL, Dong ZQ. Doublecortin-like kinase 3 (DCLK3) is associated with bad clinical outcome of patients with gastric cancer and regulates the ferroptosis and mitochondria function in vitro and in vivo. Ir J Med Sci 2024; 193:35-43. [PMID: 37340227 DOI: 10.1007/s11845-023-03430-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/09/2023] [Indexed: 06/22/2023]
Abstract
BACKGROUND Doublecortin-like kinase 3 (DCLK3), a member of tubulin superfamily, has been proved to be closely associated with the pathogenesis of numerous human tumors. However, the expression pattern and regulatory mechanisms of DCLK3 in gastric cancer (GC) remain unknown. MATERIALS AND METHODS DCLK3 expression in GC cells was assessed by RT-qPCR and western blotting. The correlation between DCLK3 levels and the overall survival of GC patients was assessed via TCGA, ACLBI, and Kaplan-Meier plotter databases. Additionally, key proteins (TCF4) involved in the regulation of DCLK3 on GC progression were screened by ACLBI database. Cell proliferation, ferroptotic cell death, and oxidative stress markers were measured by EdU staining, immunofluorescence, ELISA, and western blotting assays. RESULTS DCLK3 was upregulated in GC, and high DCLK3 expression was significantly associated with poor survival of GC patients. Here, DCLK3 knockdown reduced GC cell proliferation, induced ferroptotic cell death, and exacerbated oxidative stress level. Logistic regression analysis showed that TCF4 was an independent prognostic indicator of GC. Mechanistically, DCLK3 promoted TCF4 expression and subsequently upregulated the expression of TCF4 downstream target genes (c-Myc and Cyclin D1). Furthermore, DCLK3 overexpression enhanced GC cell proliferation, but mitigating ferroptotic cell death and oxidative stress. The regulatory mechanism may involve the upregulation of TCF4, c-Myc, and cyclin D1. CONCLUSIONS Our research suggests that DCLK3 modulates the levels of iron and reactive oxygen and may involve regulation of TCF4 pathway, thereby promoting the GC cell growth, indicating that DCLK3 may use as a prognostic marker and therapeutic target for GC patients.
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Affiliation(s)
- Jie Cheng
- Department of Pharmacy, The First Affiliated Hospital of Baotou Medical College of Inner Mongolia Scientific and Technological University, No. 41 Linyin Road, Kundulun District, Baotou, 014010, Inner Mongolia, China
| | - Yu C Tang
- Department of Pharmacy, The First Affiliated Hospital of Baotou Medical College of Inner Mongolia Scientific and Technological University, No. 41 Linyin Road, Kundulun District, Baotou, 014010, Inner Mongolia, China
| | - Yuan Dong
- Department of Pharmacy, The First Affiliated Hospital of Baotou Medical College of Inner Mongolia Scientific and Technological University, No. 41 Linyin Road, Kundulun District, Baotou, 014010, Inner Mongolia, China
| | - Rui L Qin
- Department of Cardiac Function, The First Affiliated Hospital of Baotou Medical College of Inner Mongolia Scientific and Technological University, Baotou, Inner Mongolia, China
| | - Zhi Q Dong
- Department of Pharmacy, The First Affiliated Hospital of Baotou Medical College of Inner Mongolia Scientific and Technological University, No. 41 Linyin Road, Kundulun District, Baotou, 014010, Inner Mongolia, China.
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4
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Dogra S, Elayapillai SP, Qu D, Pitts K, Filatenkov A, Houchen CW, Berry WL, Moxley K, Hannafon BN. Targeting doublecortin-like kinase 1 reveals a novel strategy to circumvent chemoresistance and metastasis in ovarian cancer. Cancer Lett 2023; 578:216437. [PMID: 37838282 PMCID: PMC10872611 DOI: 10.1016/j.canlet.2023.216437] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/02/2023] [Accepted: 10/05/2023] [Indexed: 10/16/2023]
Abstract
Ovarian cancer (OvCa) has a dismal prognosis because of its late-stage diagnosis and the emergence of chemoresistance. Doublecortin-like kinase 1 (DCLK1) is a serine/threonine kinase known to regulate cancer cell "stemness", epithelial-mesenchymal transition (EMT), and drug resistance. Here we show that DCLK1 is a druggable target that promotes chemoresistance and tumor progression of high-grade serous OvCa (HGSOC). Importantly, high DCLK1 expression significantly correlates with poor overall and progression-free survival in OvCa patients treated with platinum chemotherapy. DCLK1 expression was elevated in a subset of HGSOC cell lines in adherent (2D) and spheroid (3D) cultures, and the expression was further increased in cisplatin-resistant (CPR) spheroids relative to their sensitive controls. Using cisplatin-sensitive and resistant isogenic cell lines, pharmacologic inhibition (DCLK1-IN-1), and genetic manipulation, we demonstrate that DCLK1 inhibition was effective at re-sensitizing cells to cisplatin, reducing cell proliferation, migration, and invasion. Using kinase domain mutants, we demonstrate that DCLK1 kinase activity is critical for mediating CPR. The combination of cisplatin and DCLK1-IN-1 showed a synergistic cytotoxic effect against OvCa cells in 3D conditions. Targeted gene expression profiling revealed that DCLK1 inhibition in CPR OvCa spheroids significantly reduced TGFβ signaling, and EMT. We show in vivo efficacy of combined DCLK1 inhibition and cisplatin in significantly reducing tumor metastases. Our study shows that DCLK1 is a relevant target in OvCa and combined targeting of DCLK1 in combination with existing chemotherapy could be a novel therapeutic approach to overcome resistance and prevent OvCa recurrence.
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Affiliation(s)
- Samrita Dogra
- Department of Obstetrics and Gynecology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Peggy and Charles Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Sugantha Priya Elayapillai
- Department of Obstetrics and Gynecology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Peggy and Charles Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Dongfeng Qu
- Department of Medicine, Section of Digestive Diseases and Nutrition, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Kamille Pitts
- Department of Medicine, Section of Digestive Diseases and Nutrition, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Alexander Filatenkov
- Peggy and Charles Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Department of Pathology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Courtney W Houchen
- Peggy and Charles Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Department of Medicine, Section of Digestive Diseases and Nutrition, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - William L Berry
- Department of Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Katherine Moxley
- Oklahoma Cancer Specialists and Research Institute, Tulsa, OK, USA
| | - Bethany N Hannafon
- Department of Obstetrics and Gynecology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA; Peggy and Charles Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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5
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Sahib AS, Fawzi A, Zabibah RS, Koka NA, Khudair SA, Muhammad FA, Hamad DA. miRNA/epithelial-mesenchymal axis (EMT) axis as a key player in cancer progression and metastasis: A focus on gastric and bladder cancers. Cell Signal 2023; 112:110881. [PMID: 37666286 DOI: 10.1016/j.cellsig.2023.110881] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
The metastasis a major hallmark of tumors that its significant is not only related to the basic research, but clinical investigations have revealed that majority of cancer deaths are due to the metastasis. The metastasis of tumor cells is significantly increased due to EMT mechanism and therefore, inhibition of EMT can reduce biological behaviors of tumor cells and improve the survival rate of patients. One of the gaps related to cancer metastasis is lack of specific focus on the EMT regulation in certain types of tumor cells. The gastric and bladder cancers are considered as two main reasons of death among patients in clinical level. Herein, the role of EMT in regulation of their progression is evaluated with a focus on the function of miRNAs. The inhibition/induction of EMT in these cancers and their ability in modulation of EMT-related factors including ZEB1/2 proteins, TGF-β, Snail and cadherin proteins are discussed. Moreover, lncRNAs and circRNAs in crosstalk of miRNA/EMT regulation in these tumors are discussed and final impact on cancer metastasis and response of tumor cells to the chemotherapy is evaluated. Moreover, the impact of miRNAs transferred by exosomes in regulation of EMT in these cancers are discussed.
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Affiliation(s)
- Ameer S Sahib
- Department of Pharmacy, Al- Mustaqbal University College, 51001 Hilla, Iraq
| | - Amjid Fawzi
- Medical Technical College, Al-Farahidi University, Iraq
| | - Rahman S Zabibah
- Medical Laboratory Technology Department, College of Medical Technology, The Islamic University, Najaf, Iraq
| | - Nisar Ahmad Koka
- Department of English, Faculty of Languages and Translation, King Khalid University, Abha, Kingdom of Saudi Arabia.
| | | | | | - Doaa A Hamad
- Nursing Department, Hilla University College, Babylon, Iraq
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6
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Ebrahimi N, Hakimzadeh A, Bozorgmand F, Speed S, Manavi MS, Khorram R, Farahani K, Rezaei-Tazangi F, Mansouri A, Hamblin MR, Aref AR. Role of non-coding RNAs as new therapeutic targets in regulating the EMT and apoptosis in metastatic gastric and colorectal cancers. Cell Cycle 2023; 22:2302-2323. [PMID: 38009668 PMCID: PMC10730205 DOI: 10.1080/15384101.2023.2286804] [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: 06/08/2022] [Accepted: 08/01/2023] [Indexed: 11/29/2023] Open
Abstract
Colorectal cancer (CRC) and gastric cancer (GC), are the two most common cancers of the gastrointestinal tract, and are serious health concerns worldwide. The discovery of more effective biomarkers for early diagnosis, and improved patient prognosis is important. Non-coding RNAs (ncRNAs), including microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), can regulate cellular processes such as apoptosis and the epithelial-mesenchymal transition (EMT) leading to progression and resistance of GC and CRC tumors. Moreover these pathways (apoptosis and EMT) may serve as therapeutic targets, to prevent metastasis, and to overcome drug resistance. A subgroup of ncRNAs is common to both GC and CRC tumors, suggesting that they might be used as biomarkers or therapeutic targets. In this review, we highlight some ncRNAs that can regulate EMT and apoptosis as two opposite mechanisms in cancer progression and metastasis in GC and CRC. A better understanding of the biological role of ncRNAs could open up new avenues for the development of personalized treatment plans for GC and CRC patients.
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Affiliation(s)
- Nasim Ebrahimi
- Genetics Division, Department of Cell and Molecular Biology and Microbiology, Faculty of Science and Technology, University of Isfahan, Isfahan, Iran
| | - Ali Hakimzadeh
- Department of Medical Biotechnologies, University of Siena, Tuscany, Italy
| | - Farima Bozorgmand
- Department of Medical Nanotechnology, Faculty of Advanced Sciences and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Sepehr Speed
- Medical Campus, Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | | | - Roya Khorram
- Bone and Joint Diseases Research Center, Department of Orthopedic Surgery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Kobra Farahani
- Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran
| | - Fatemeh Rezaei-Tazangi
- Department of Anatomy, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Atena Mansouri
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, South Africa
- Radiation Biology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Reza Aref
- Xsphera Biosciences, Translational Medicine group, Boston, MA, USA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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7
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Zeng H, Zhou S, Cai W, Kang M, Zhang P. LncRNA SNHG1: role in tumorigenesis of multiple human cancers. Cancer Cell Int 2023; 23:198. [PMID: 37684619 PMCID: PMC10492323 DOI: 10.1186/s12935-023-03018-1] [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: 03/22/2023] [Accepted: 08/06/2023] [Indexed: 09/10/2023] Open
Abstract
Small nucleolar RNA host gene 1 (SNHG1) is an important member of the SNHG family. This family is composed of a group of host genes that can be processed into small nucleolar RNAs and play important biological functions. In an oncogenic role, the SNHG1 expression is increased in various cancers, which has immense application prospects in the diagnosis, treatment, and prognosis of malignant tumors. In this review, we have summarized the role and molecular mechanism of SNHG1 in the development of various cancers. In addition, we have emphasized the clinical significance of SNHG1 in cancers in our article. This molecule is expected to be a new marker for potential usage in the diagnosis, prognosis, and treatment of cancer.
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Affiliation(s)
- Huang Zeng
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Shouang Zhou
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Weiqiang Cai
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Mingqiang Kang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Gulou, Fuzhou, 350001, China.
| | - Peipei Zhang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Gulou, Fuzhou, 350001, China.
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8
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Brown JS. Comparison of Oncogenes, Tumor Suppressors, and MicroRNAs Between Schizophrenia and Glioma: The Balance of Power. Neurosci Biobehav Rev 2023; 151:105206. [PMID: 37178944 DOI: 10.1016/j.neubiorev.2023.105206] [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: 11/29/2022] [Revised: 04/25/2023] [Accepted: 04/30/2023] [Indexed: 05/15/2023]
Abstract
The risk of cancer in schizophrenia has been controversial. Confounders of the issue are cigarette smoking in schizophrenia, and antiproliferative effects of antipsychotic medications. The author has previously suggested comparison of a specific cancer like glioma to schizophrenia might help determine a more accurate relationship between cancer and schizophrenia. To accomplish this goal, the author performed three comparisons of data; the first a comparison of conventional tumor suppressors and oncogenes between schizophrenia and cancer including glioma. This comparison determined schizophrenia has both tumor-suppressive and tumor-promoting characteristics. A second, larger comparison between brain-expressed microRNAs in schizophrenia with their expression in glioma was then performed. This identified a core carcinogenic group of miRNAs in schizophrenia offset by a larger group of tumor-suppressive miRNAs. This proposed "balance of power" between oncogenes and tumor suppressors could cause neuroinflammation. This was assessed by a third comparison between schizophrenia, glioma and inflammation in asbestos-related lung cancer and mesothelioma (ALRCM). This revealed that schizophrenia shares more oncogenic similarity to ALRCM than glioma.
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9
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Han C, Qi Y, She Y, Zhang M, Xie H, Zhang J, Zhao Z, Peng C, Liu Y, Lin Y, Wang J, Zeng D. Long noncoding RNA SENCR facilitates the progression of acute myeloid leukemia through the miR-4731-5p/IRF2 pathway. Pathol Res Pract 2023; 245:154483. [PMID: 37120908 DOI: 10.1016/j.prp.2023.154483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/02/2023]
Abstract
BACKGROUND Acute myeloid leukemia (AML) is a type of hematological tumor caused by malignant clone hematopoietic stem cells. The relationship between lncRNAs and tumor occurrence and progression has been gaining attention. Research has shown that Smooth muscle and endothelial cell-enriched migration/differentiation-associated lncRNA (SENCR) is abnormally expressed in various diseases, whereas its role in AML is still poorly understood. METHODS The expression of SENCR, microRNA-4731-5p (miR-4731-5p) and Interferon regulatory factor 2 (IRF2) were measured using qRT-PCR. The proliferation, cycle and apoptosis of AML cells with or without knockdown of SENCR were detected by CCK-8 assay, EdU assay, flow cytometry, western blotting and TUNEL assay, respectively. Consistently, SENCR knockdown was impaired the AML progression in immunodeficient mice. In addition, the binding of miR-4731-5p to SENCR or IRF2 was confirmed by luciferase reporter genes assay. Finally, rescue experiments were conducted to confirm the role of SENCR/miR-4731-5p/IRF2 axis in AML. RESULTS SENCR is highly expressed in AML patients and cell lines. The patients with high SENCR expression had poorer prognosis compared with those with low SENCR expression. Interestingly, knockdown of SENCR inhibits the growth of AML cells. Further results demonstrated that the reduction of SENCR slows the progression of AML in vivo. SENCR could function as a competing endogenous RNA (ceRNA) to negatively regulate miR-4731-5p in AML cells. Furthermore, IRF2 was validated as a direct target gene of miR-4731-5p in AML cells. CONCLUSIONS Our findings underscore the important role of SENCR in regulating the malignant phenotype of AML cells by targeting the miR-4731-5p/IRF2 axis.
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Affiliation(s)
- Changhao Han
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Yan Qi
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Yuanting She
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Meijuan Zhang
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Huan Xie
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Jing Zhang
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Zhongyue Zhao
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Cuicui Peng
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Yu Liu
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Yizhang Lin
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Jin Wang
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China
| | - Dongfeng Zeng
- Department of Hematology, Daping Hospital, Third Military Medical University, No. 10 Changjiang Branch Road, Yuzhong District, Chongqing 400042, China.
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10
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Hosseini SA, Haddadi MH, Fathizadeh H, Nemati F, Aznaveh HM, Taraj F, Aghabozorgizadeh A, Gandomkar G, Bazazzadeh E. Long non-coding RNAs and gastric cancer: An update of potential biomarkers and therapeutic applications. Biomed Pharmacother 2023; 163:114407. [PMID: 37100014 DOI: 10.1016/j.biopha.2023.114407] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/12/2023] [Accepted: 02/15/2023] [Indexed: 04/28/2023] Open
Abstract
The frequent metastasis of gastric cancer (GC) complicates the cure and therefore the development of effective diagnostic and therapeutic approaches is urgently necessary. In recent years, lncRNA has emerged as a drug target in the treatment of GC, particularly in the areas of cancer immunity, cancer metabolism, and cancer metastasis. This has led to the demonstration of the importance of these RNAs as prognostic, diagnostic and therapeutic agents. In this review, we provide an overview of the biological activities of lncRNAs in GC development and update the latest pathological activities, prognostic and diagnostic strategies, and therapeutic options for GC-related lncRNAs.
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Affiliation(s)
- Sayedeh Azimeh Hosseini
- Department of Medical Biotechnology, School of Advanced Technology, Shahrekord University of Medical Sciences, Shahrekord, Iran; Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran; USERN office, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | | | - Hadis Fathizadeh
- Student Research Committee, Sirjan School of Medical Sciences, Sirjan, Iran; Department of Laboratory sciences, Sirjan School of Medical Sciences, Sirjan, Iran
| | - Foroogh Nemati
- Department of Microbiology, Kashan University of Medical Sciences, Kashan, Iran
| | - Hooman Mahmoudi Aznaveh
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, P.O. Box: 14115-154, Tehran, Iran
| | - Farima Taraj
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - AmirArsalan Aghabozorgizadeh
- Department of Cell and Molecular Biology and Microbiology, Faculty of Science and Technology, University of Isfahan, Isfahan, Iran
| | - Golmaryam Gandomkar
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Elaheh Bazazzadeh
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, P.O. Box: 14115-154, Tehran, Iran
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11
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Carli ALE, Hardy JM, Hoblos H, Ernst M, Lucet IS, Buchert M. Structure-Guided Prediction of the Functional Impact of DCLK1 Mutations on Tumorigenesis. Biomedicines 2023; 11:biomedicines11030990. [PMID: 36979969 PMCID: PMC10046695 DOI: 10.3390/biomedicines11030990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/16/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Doublecortin-like kinase 1 (DCLK1) is a functional serine/threonine (S/T)-kinase and a member of the doublecortin family of proteins which are characterized by their ability to bind to microtubules (MTs). DCLK1 is a proposed cancer driver gene, and its upregulation is associated with poor overall survival in several solid cancer types. However, how DCLK1 associates with MTs and how its kinase function contributes to pro-tumorigenic processes is poorly understood. This review builds on structural models to propose not only the specific functions of the domains but also attempts to predict the impact of individual somatic missense mutations on DCLK1 functions. Somatic missense mutations in DCLK1 are most frequently located within the N-terminal MT binding region and likely impact on the ability of DCLK1 to bind to αβ-tubulin and to polymerize and stabilize MTs. Moreover, the MT binding affinity of DCLK1 is negatively regulated by its auto-phosphorylation, and therefore mutations that affect kinase activity are predicted to indirectly alter MT dynamics. The emerging picture portrays DCLK1 as an MT-associated protein whose interactions with tubulin heterodimers and MTs are tightly controlled processes which, when disrupted, may confer pro-tumorigenic properties.
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Affiliation(s)
- Annalisa L E Carli
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Joshua M Hardy
- ACRF Chemical Biology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Hanadi Hoblos
- ACRF Chemical Biology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Matthias Ernst
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
| | - Isabelle S Lucet
- ACRF Chemical Biology Division, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Michael Buchert
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, VIC 3084, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, VIC 3086, Australia
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12
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Xi J, Li Y, Zhang H, Bai Z. Dynamic variations of the gastric microbiota: Key therapeutic points in the reversal of Correa's cascade. Int J Cancer 2023; 152:1069-1084. [PMID: 36029278 DOI: 10.1002/ijc.34264] [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: 03/31/2022] [Revised: 08/10/2022] [Accepted: 08/15/2022] [Indexed: 01/21/2023]
Abstract
Correa's cascade is a dynamic process in the development of intestinal-type gastric cancer (GC), and its pathological features, gastric microbiota and interactions between microorganisms and their hosts vary at different developmental stages. The characteristics of cells, tissues and gastric microbiota before or after key therapeutic points are critical for monitoring malignant transformation and early tumour reversal. This review summarises the pathological features of gastric mucosa, characteristics of gastric microbiota, specific microbial markers, microbe-microbe interactions and microbe-host interactions at different stages in Correa's cascade. The markers related to each Correa's cascade point were analysed in detail. We attempted to identify key therapeutic points for early cancer reversal and provide a novel approach to reduce the incidence of GC and improve precise treatment.
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Affiliation(s)
- Jiahui Xi
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,Key Laboratory of Biotherapy and Regenerative Medicine, Gansu Province, Lanzhou, China
| | - Yonghong Li
- NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumour, Gansu Provincial Hospital, Lanzhou, China
| | - Hui Zhang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,General Surgery Department, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zhongtian Bai
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China.,Key Laboratory of Biotherapy and Regenerative Medicine, Gansu Province, Lanzhou, China.,General Surgery Department, The First Hospital of Lanzhou University, Lanzhou, China
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13
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Ansari S, Nikpour P. LNCAROD promotes the proliferation and migration of gastric cancer: a bioinformatics analysis and experimental validation. Funct Integr Genomics 2023; 23:34. [PMID: 36625949 DOI: 10.1007/s10142-022-00954-5] [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: 11/17/2022] [Revised: 12/19/2022] [Accepted: 12/27/2022] [Indexed: 01/11/2023]
Abstract
Gastric cancer (GC) is a heterogeneous disease at the molecular and clinical levels. The diffuse subtype is associated with more aggressive behavior and poor prognosis than the intestinal subtype. Epithelial-to-mesenchymal transition (EMT) may be involved in the diffuse mesenchymal phenotype. Long non-coding RNA (lncRNA) deregulation plays a vital role in GC development and progression. Here, we aimed to comprehensively disclose lncRNAs associated with GC diffuse/mesenchymal type. RNA-sequencing expression profiles of patients with stomach adenocarcinoma and the corresponding clinical data were downloaded from The Cancer Genome Atlas database. Differentially expressed lncRNAs related to tumor samples and diffuse subtype were identified. The lncRNA activating regulator of DKK1 (LNCAROD) was experimentally studied. Furthermore, a lncRNA-miRNA-mRNA network was constructed to identify potential biological functions of LNCAROD. LNCAROD expression was detected by reverse transcription-quantitative polymerase chain reaction in GC cell lines. LNCAROD expression was silenced using the small interference RNA strategy. Cell proliferation and migration were evaluated using colony formation assay, scratch wound healing, and Transwell migration assays. LNCAROD was significantly upregulated in some GC cells. The knocking down of LNCAROD significantly reduced cell proliferation and migration. LNCAROD-miR-181-PROX1 axis was introduced as a potential regulatory mechanism by which LNCAROD may exert its functions in cells. Our findings highlight that LNCAROD is involved in cell proliferation and migration in GC and supports its implicit role in regulating EMT. It may serve as a potential diagnostic and therapeutic target in GC. In addition, LNCAROD may function through the possible regulatory axis in GC development.
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Affiliation(s)
- Sara Ansari
- Department of Genetics and Molecular Biology, Faculty of Medicine, Isfahan University of Medical Sciences, Hezar Jarib Street, Isfahan, Iran
| | - Parvaneh Nikpour
- Department of Genetics and Molecular Biology, Faculty of Medicine, Isfahan University of Medical Sciences, Hezar Jarib Street, Isfahan, Iran.
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14
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Liu J, Liu Z, Yan W, Yang H, Fang S, Deng S, Wen Y, Shen P, Li Y, Hou R, Liu X, Huang T, Li R, Zheng D, Liu Z, Fang W. ENKUR recruits FBXW7 to ubiquitinate and degrade MYH9 and further suppress MYH9‐induced deubiquitination of β‐catenin to block gastric cancer metastasis. MedComm (Beijing) 2022; 3:e185. [DOI: 10.1002/mco2.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/27/2022] Open
Affiliation(s)
- Jiahao Liu
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Zhan Liu
- Department of Gastroenterology Hunan People's Hospital Changsha P.R. China
| | - Weiwei Yan
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Huiling Yang
- School of Pharmacy Guangdong Medical University Dongguan P.R. China
| | - Shiyi Fang
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
- School of Public Health University of South China Hengyang P. R. China
| | - Shuting Deng
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Yinghao Wen
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Peng Shen
- Oncology Department Nanfang Hospital Southern Medical University Guangzhou P.R. China
| | - Yonghao Li
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Rentao Hou
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Xiong Liu
- Oncology Department Nanfang Hospital Southern Medical University Guangzhou P.R. China
| | - Tao Huang
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Rong Li
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Dayong Zheng
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
| | - Zhen Liu
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
- Key Laboratory of Protein Modification and Degradation Basic School of Guangzhou Medical University Guangzhou P. R. China
| | - Weiyi Fang
- Cancer Center, Integrated Hospital of Traditional Chinese Medicine Southern Medical University Guangzhou P. R. China
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15
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Li F, Tan B, Chen Z, Zhao Q, Li S, Ding P, Liu C, Wang X, Li X, Li Y. Long non-coding RNA CNALPTC1 promotes gastric cancer progression by regulating the miR-6788-5p/PAK1 pathway. J Gastrointest Oncol 2022; 13:2809-2822. [PMID: 36636079 PMCID: PMC9830357 DOI: 10.21037/jgo-22-1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
Background Gastric cancer (GC) is a globally prevalent gastrointestinal tumor. Long non-coding RNAs (lncRNAs) are a new type of transcript which has become a hotspot of current research; however, the function of most lncRNAs in the advancement of GC is still not clear. The focus of this research was to elucidate the role and expression of lncRNA CNALPTC1 in GC. Methods In GC cells and tissues, the detection of CNALPTC1 expression was carried out using quantitative real-time polymerase chain reaction (qRT-PCR), and the link between its expression and clinicopathological features was investigated. The impacts of inhibition and upregulation of CNALPTC1 on the physiological behavior of GC cells were observed. Furthermore, through bioinformatics analysis and prediction of microRNA (miRNA) targeted to CNALPTC1 and target genes interacting with miRNA, the effects on invasion, proliferation, and migration of GC cells were investigated. Results The elevated expression level of CNALPTC1 was observed in GC tissues and cell lines. The in vitro analysis indicated that gene silencing of CNALPTC1 resulted in inhibition, whereas upregulation of CNALPTC1 resulted in the promotion of invasion, proliferation, and migration of GC cells, respectively. In addition, we observed that CNALPTC1 functions as a molecular sponge for miR-6788-5p, and the level of expression of CNALPTC1 exhibited a negative correlation with miR-6788-5p. Moreover, it was revealed that the miR-6788-5p's direct target was PAK1, which could reverse the inhibitory function of miR-6788-5p. Conclusions Our research revealed that the CNALPTC1 promotes GC development by negatively regulating the miR-6788-5p/PAK1 pathway. GC therapy may be improved by conducting targeted studies of the CNALPTC1/miR-6788-5p/PAK1 axis.
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Affiliation(s)
- Fang Li
- Department of Pathology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Bibo Tan
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zihao Chen
- Department of Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qun Zhao
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Shi Li
- Department of Pathology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Pingan Ding
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chang Liu
- Department of Pathology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaoxiao Wang
- Department of Pathology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaoya Li
- Department of Scientific Research Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yong Li
- The Third Department of Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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16
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Hashemi M, Hajimazdarany S, Mohan CD, Mohammadi M, Rezaei S, Olyaee Y, Goldoost Y, Ghorbani A, Mirmazloomi SR, Gholinia N, Kakavand A, Salimimoghadam S, Ertas YN, Rangappa KS, Taheriazam A, Entezari M. Long non-coding RNA/epithelial-mesenchymal transition axis in human cancers: Tumorigenesis, chemoresistance, and radioresistance. Pharmacol Res 2022; 186:106535. [DOI: 10.1016/j.phrs.2022.106535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/22/2022] [Accepted: 10/30/2022] [Indexed: 11/07/2022]
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17
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Emam O, Wasfey EF, Hamdy NM. Notch-associated lncRNAs profiling circuiting epigenetic modification in colorectal cancer. Cancer Cell Int 2022; 22:316. [PMID: 36229883 PMCID: PMC9558410 DOI: 10.1186/s12935-022-02736-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/28/2022] [Indexed: 11/15/2022] Open
Abstract
Background Colorectal cancer (CRC) is one of the most prevalent digestive cancers, ranking the 2nd cause of cancer-related fatality worldwide. The worldwide burden of CRC is predicted to rise by 60% by 2030. Environmental factors drive, first, inflammation and hence, cancer incidence increase. Main The Notch-signaling system is an evolutionarily conserved cascade, has role in the biological normal developmental processes as well as malignancies. Long non-coding RNAs (LncRNAs) have become major contributors in the advancement of cancer by serving as signal pathways regulators. They can control gene expression through post-translational changes, interactions with micro-RNAs or down-stream effector proteins. Recent emerging evidence has emphasized the role of lncRNAs in controlling Notch-signaling activity, regulating development of several cancers including CRC. Conclusion Notch-associated lncRNAs might be useful prognostic biomarkers or promising potential therapeutic targets for CRC treatment. Therefore, here-in we will focus on the role of “Notch-associated lncRNAs in CRC” highlighting “the impact of Notch-associated lncRNAs as player for cancer induction and/or progression.” Graphical Abstract ![]()
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Affiliation(s)
| | - Eman F Wasfey
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt
| | - Nadia M Hamdy
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt.
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18
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Feng YN, Li BY, Wang K, Li XX, Zhang L, Dong XZ. Epithelial-mesenchymal transition-related long noncoding RNAs in gastric carcinoma. Front Mol Biosci 2022; 9:977280. [PMCID: PMC9605205 DOI: 10.3389/fmolb.2022.977280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/29/2022] [Indexed: 11/13/2022] Open
Abstract
As an evolutionarily phenotypic conversion program, the epithelial-mesenchymal transition (EMT) has been implicated in tumour deterioration and has facilitated the metastatic ability of cancer cells via enhancing migration and invasion. Gastric cancer (GC) remains a frequently diagnosed non-skin malignancy globally. Most GC-associated mortality can be attributed to metastasis. Recent studies have shown that EMT-related long non-coding RNAs (lncRNAs) play a critical role in GC progression and GC cell motility. In addition, lncRNAs are associated with EMT-related transcription factors and signalling pathways. In the present review, we comprehensively described the EMT-inducing lncRNA molecular mechanisms and functional perspectives of EMT-inducing lncRNAs in GC progression. Taken together, the statements of this review provided a clinical implementation in identifying lncRNAs as potential therapeutic targets for advanced GC.
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19
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Chhetri D, Vengadassalapathy S, Venkadassalapathy S, Balachandran V, Umapathy VR, Veeraraghavan VP, Jayaraman S, Patil S, Iyaswamy A, Palaniyandi K, Gnanasampanthapandian D. Pleiotropic effects of DCLK1 in cancer and cancer stem cells. Front Mol Biosci 2022; 9:965730. [PMID: 36250024 PMCID: PMC9560780 DOI: 10.3389/fmolb.2022.965730] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/12/2022] [Indexed: 12/02/2022] Open
Abstract
Doublecortin-like kinase 1 (DCLK1), a protein molecule, has been identified as a tumor stem cell marker in the cancer cells of gastrointestinal, pancreas, and human colon. DCLK1 expression in cancers, such as breast carcinoma, lung carcinoma, hepatic cell carcinoma, tuft cells, and human cholangiocarcinoma, has shown a way to target the DCLK1 gene and downregulate its expression. Several studies have discussed the inhibition of tumor cell proliferation along with neoplastic cell arrest when the DCLK1 gene, which is expressed in both cancer and normal cells, was targeted successfully. In addition, previous studies have shown that DCLK1 plays a vital role in various cancer metastases. The correlation of DCLK1 with numerous stem cell receptors, signaling pathways, and genes suggests its direct or an indirect role in promoting tumorigenesis. Moreover, the impact of DCLK1 was found to be related to the functioning of an oncogene. The downregulation of DCLK1 expression by using targeted strategies, such as embracing the use of siRNA, miRNA, CRISPR/Cas9 technology, nanomolecules, specific monoclonal antibodies, and silencing the pathways regulated by DCLK1, has shown promising results in both in vitro and in vivo studies on gastrointestinal (GI) cancers. In this review, we will discuss about the present understanding of DCLK1 and its role in the progression of GI cancer and metastasis.
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Affiliation(s)
- Dibyashree Chhetri
- Cancer Science Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai, India
| | - Srinivasan Vengadassalapathy
- Department of Pharmacology, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | | | - Varadharaju Balachandran
- Department of Physiology, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Vidhya Rekha Umapathy
- Department of Public Health Dentistry, Sree Balaji Dental College and Hospital, Chennai, India
| | - Vishnu Priya Veeraraghavan
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Selvaraj Jayaraman
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Shankargouda Patil
- College of Dental Medicine, Roseman University of Health Sciences, South Jordan, UT, United States
| | - Ashok Iyaswamy
- Centre for Parkinsons Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China
| | - Kanagaraj Palaniyandi
- Cancer Science Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai, India
- *Correspondence: Kanagaraj Palaniyandi, ; Dhanavathy Gnanasampanthapandian,
| | - Dhanavathy Gnanasampanthapandian
- Cancer Science Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai, India
- *Correspondence: Kanagaraj Palaniyandi, ; Dhanavathy Gnanasampanthapandian,
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Chen G, Liao J, Xu Y, Chen Y, Li J, Bu G, Li Q. LINC01232 Promotes Metastasis and EMT by Regulating miR-506-5p/PAK1 Axis in Gastric Cancer. Cancer Manag Res 2022; 14:1729-1740. [PMID: 35592108 PMCID: PMC9113486 DOI: 10.2147/cmar.s352081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 04/28/2022] [Indexed: 01/19/2023] Open
Abstract
Background Long non-coding RNA LINC01232 plays an important role in the progression of metastasis in several cancers. However, the function of LINC01232 in gastric cancer is limited. Authors aimed to investigate the role and mechanism of LINC01232 in the metastasis of gastric cancer. Methods The expression levels and correlation of LINC01232, miR-506-5p, and PAK1 were analyzed by GEPIA or ENCORI, and the abundance of LINC01232 and miR-506-5p was measured in tissues and cells via qRT-PCR, the location of LINC01232 in gastric cells was analyzed by nuclear and cytoplasmic fractionation, while the protein levels of PAK1, E-cadherin and vimentin were additionally quantified by Western blotting. Interactions between LINC01232, miR-506-5p, and PAK1 were detected through luciferase reporter assays, qRT-PCR and Western blotting. Cellular viability was evaluated through CCK8 assays, migration ability was measured by transwell assays, invasion ability was tested by wound healing experiment. Results LINC01232 was overexpressed in gastric cancer tissues and cells, and mainly located in nucleus. The inhibition of LINC01232 could suppress migration, invasion and EMT of gastric cancer cells. MiR-506-5p was downregulated in gastric cancer tissues and cells. LINC01232 sponged miR-506-5p to accelerate migration and EMT. PAK1 was certified to be a target of miR-506-5p, inhibition of PAK1 could interrupt LINC01232 overexpression-induced migration of gastric cancer cells. Conclusion The LINC01232/miR-506-5p/PAK1 axis promotes metastasis of gastric cancer cells.
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Affiliation(s)
- Gang Chen
- Digestive System Department, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, People’s Republic of China
| | - Jiangtao Liao
- Digestive System Department, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, People’s Republic of China
| | - Yan Xu
- Geriatrics Departments, The Second Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Yinyun Chen
- Digestive System Department, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, People’s Republic of China
| | - Juan Li
- Digestive System Department, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, People’s Republic of China
| | - Guangkui Bu
- Digestive System Department, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, People’s Republic of China
| | - Qingqing Li
- Digestive System Department, Hunan Provincial People's Hospital (The First-Affiliated Hospital of Hunan Normal University), Changsha, People’s Republic of China
- Correspondence: Qingqing Li, Digestive System Department, Hunan Provincial People’s Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, People’s Republic of China, Email
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Xiao J, Cai X, Zhou W, Wang R, Ye Z. Curcumin relieved the rheumatoid arthritis progression via modulating the linc00052/miR-126-5p/PIAS2 axis. Bioengineered 2022; 13:10973-10983. [PMID: 35473503 PMCID: PMC9208441 DOI: 10.1080/21655979.2022.2066760] [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] [Indexed: 11/02/2022] Open
Abstract
Curcumin, with its antioxidant, anti-inflammatory, and antitumor properties, is widely used in the treatment of bone disorders, including rheumatoid arthritis (RA). We investigated the effects of curcumin on fibroblast-like synoviocytes in RA and its underlying mechanism. mRNA and microRNA (miRNA) expression levels were determined using reverse transcription-quantitative polymerase chain reaction. Cellular functions were detected using cell counting kit-8, 5-ethynyl-2'-deoxyuridine, Transwell, and flow cytometric assays. Enzyme-linked immunosorbent assay was performed to measure the cytokine release. Western blotting was used to determine the protein expression levels. An in vivo assay was performed to verify the role of linc00052 in RA. Curcumin promoted apoptosis and inhibited the growth, migration, and invasion of RA fibroblast-like synovial (RAFLS) cells. Curcumin treatment suppressed the inflammatory response of RAFLS cells. Moreover, curcumin increased linc00052 levels, and linc00052 knockdown reversed the effects of curcumin. Additionally, linc00052 functioned as a competing endogenous RNA to upregulate the expression of the protein inhibitor of activated STAT 2 (PIAS2) by sponging miR-126-5p. Curcumin inhibited the Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) signaling pathway. In vivo assays showed that curcumin decreased the arthritis score and improved inflammatory infiltration and synovial cell proliferation. These results reveal that curcumin protects against RA by regulating the inc00052/miR-126-5p/PIAS2 axis through JAK2/STAT3 signaling pathway.
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Affiliation(s)
- Jianwei Xiao
- Department of Rheumatology and Immunology, Shenzhen Futian Hospital for Rheumatic Diseases, No.22 Nonglin Road, Shenzhen 518000, China
| | - Xu Cai
- Department of Rheumatology and Immunology, Shenzhen Futian Hospital for Rheumatic Diseases, No.22 Nonglin Road, Shenzhen 518000, China
| | - Weijian Zhou
- Department of Rheumatism, Yunnan Provincial Hospital of Traditional Chinese Medicine. NO.120 Guanghua Street, Wuhua District, Kunming City, Yunnan Province, 650000, China
| | - Rongsheng Wang
- Department of Rheumatism, Shanghai Guanghua Hospital of Integrated Traditional and Western Medicine, Shanghai, 200052, China
| | - Zhizhong Ye
- Department of Rheumatology and Immunology, Shenzhen Futian Hospital for Rheumatic Diseases, No.22 Nonglin Road, Shenzhen 518000, China
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22
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LncSNHG1 Promoted CRC Proliferation through the miR-181b-5p/SMAD2 Axis. JOURNAL OF ONCOLOGY 2022; 2022:4181730. [PMID: 35310912 PMCID: PMC8933095 DOI: 10.1155/2022/4181730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 01/29/2022] [Accepted: 02/14/2022] [Indexed: 11/30/2022]
Abstract
Objective To investigate the effects of LncRNA SNHG1 on the proliferation, migration, and epithelial-mesenchymal transition (EMT) of colorectal cancer cells (CRCs). Methods 4 pairs of CRC tissue samples and their corresponding adjacent samples were analyzed by the human LncRNA microarray chip. The expression of LncSNHG1 in CRC cell lines was verified by qRT-PCR. Colony formation assays and CCK8 assays were applied to study the changes in cell proliferation. The transwell assay and wound healing experiments were used to verify the cell invasion and migration. EMT progression was confirmed finally. Results LncSNHG1 was overexpressed both in CRC tissues and cell lines, while the miR-181b-5p expression was decreased in CRC cell lines. After knock-down of LncSNHG1, the proliferation, invasion, and migration of HT29 and SW620 cells were all decreased. Meanwhile, LncSNHG1 enhanced EMT progress through regulation of the miR-181b-5p/SMAD2 axis. Conclusion LncSNHG1 promotes colorectal cancer cell proliferation and invasion through the miR-181b-5p/SMAD2 axis.
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Lee SS, Park J, Oh S, Kwack K. Downregulation of LOC441461 Promotes Cell Growth and Motility in Human Gastric Cancer. Cancers (Basel) 2022; 14:cancers14051149. [PMID: 35267457 PMCID: PMC8909665 DOI: 10.3390/cancers14051149] [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: 01/20/2022] [Revised: 02/17/2022] [Accepted: 02/22/2022] [Indexed: 11/16/2022] Open
Abstract
Gastric cancer is a common tumor, with a high mortality rate. The severity of gastric cancer is assessed by TNM staging. Long noncoding RNAs (lncRNAs) play a role in cancer treatment; investigating the clinical significance of novel biomarkers associated with TNM staging, such as lncRNAs, is important. In this study, we investigated the association between the expression of the lncRNA LOC441461 and gastric cancer stage. LOC441461 expression was lower in stage IV than in stages I, II, and III. The depletion of LOC441461 promoted cell proliferation, cell cycle progression, apoptosis, cell motility, and invasiveness. LOC441461 downregulation increased the epithelial-to-mesenchymal transition, as indicated by increased TRAIL signaling and decreased RUNX1 interactions. The interaction of the transcription factors RELA, IRF1, ESR1, AR, POU5F1, TRIM28, and GATA1 with LOC441461 affected the degree of the malignancy of gastric cancer by modulating gene transcription. The present study identified LOC441461 and seven transcription factors as potential biomarkers and therapeutic targets for the treatment of gastric cancer.
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Affiliation(s)
- Sang-soo Lee
- Department of Biomedical Science, CHA University, Seongnam 13488, Korea; (S.-s.L.); (J.P.)
| | - JeongMan Park
- Department of Biomedical Science, CHA University, Seongnam 13488, Korea; (S.-s.L.); (J.P.)
| | - Sooyeon Oh
- Chaum Life Center, CHA University School of Medicine, Seoul 06062, Korea;
| | - KyuBum Kwack
- Department of Biomedical Science, CHA University, Seongnam 13488, Korea; (S.-s.L.); (J.P.)
- Correspondence: ; Tel.: +82-31-881-7141
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Vijai M, Baba M, Ramalingam S, Thiyagaraj A. DCLK1 and its interaction partners: An effective therapeutic target for colorectal cancer. Oncol Lett 2021; 22:850. [PMID: 34733368 PMCID: PMC8561619 DOI: 10.3892/ol.2021.13111] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 06/02/2021] [Indexed: 12/23/2022] Open
Abstract
Doublecortin-like kinase protein 1 (DCLK1) is a microtubule-associated protein with a C-terminal serine/threonine kinase domain. Its expression was first reported in radial glial cells, where it serves an essential role in early neurogenesis, and since then, other functions of the DCLK1 protein have also been identified. Initially considered to be a marker of quiescent gastrointestinal and pancreatic stem cells, DCLK1 has recently been identified in the gastrointestinal tract as a marker of tuft cells. It has also been implicated in different types of cancer, where it regulates several vital pathways, such as Kras signaling. However, its underlying molecular mechanisms remain unclear. The present review discusses the different roles of DCLK1 and its interactions with other proteins that are homologically similar to DCLK1 to develop a novel therapeutic strategy to target cancer cells more accurately.
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Affiliation(s)
- Muthu Vijai
- Department of Genetic Engineering, SRM Institute of Science and Technology, Sri Ramaswamy Memorial (SRM) Nagar, Kattankulathur, Tamil Nadu 603203, India
| | - Mursaleen Baba
- Department of Genetic Engineering, SRM Institute of Science and Technology, Sri Ramaswamy Memorial (SRM) Nagar, Kattankulathur, Tamil Nadu 603203, India
| | - Satish Ramalingam
- Department of Genetic Engineering, SRM Institute of Science and Technology, Sri Ramaswamy Memorial (SRM) Nagar, Kattankulathur, Tamil Nadu 603203, India
| | - Anand Thiyagaraj
- Department of Genetic Engineering, SRM Institute of Science and Technology, Sri Ramaswamy Memorial (SRM) Nagar, Kattankulathur, Tamil Nadu 603203, India
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25
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Zhao H, Hu H, Chen B, Xu W, Zhao J, Huang C, Xing Y, Lv H, Nie C, Wang J, He Y, Wang SQ, Chen XB. Overview on the Role of E-Cadherin in Gastric Cancer: Dysregulation and Clinical Implications. Front Mol Biosci 2021; 8:689139. [PMID: 34422902 PMCID: PMC8371966 DOI: 10.3389/fmolb.2021.689139] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/19/2021] [Indexed: 01/04/2023] Open
Abstract
Gastric cancer is the fifth most common cancer and the third most common cause of cancer death all over the world. E-cadherin encoded by human CDH1 gene plays important roles in tumorigenesis as well as in tumor progression, invasion and metastasis. Full-length E-cadhrin tethered on the cell membrane mainly mediates adherens junctions between cells and is involved in maintaining the normal structure of epithelial tissues. After proteolysis, the extracellular fragment of the full-length E-cadhein is released into the extracellular environment and the blood, which is called soluble E-cadherin (sE-cadherin). sE-cadherin promots invasion and metastasis as a paracrine/autocrine signaling molecule in the progression of various types of cancer including gastric cancer. This review mainly summarizes the dysregulation of E-cadherin and the regulatory roles in the progression, invasion, metastasis, and drug-resistance, as well as its clinical applications in diagnosis, prognosis, and therapeutics of gastric cancer.
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Affiliation(s)
- Huichen Zhao
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Huihui Hu
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Beibei Chen
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and Treatment, Zhengzhou University, Zhengzhou, China
| | - Weifeng Xu
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Jing Zhao
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Chen Huang
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Yishu Xing
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Huifang Lv
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Caiyun Nie
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Jianzheng Wang
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Yunduan He
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Sai-Qi Wang
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and Treatment, Zhengzhou University, Zhengzhou, China
| | - Xiao-Bing Chen
- Department of Medical Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and Treatment, Zhengzhou University, Zhengzhou, China
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26
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Wang S, Han H, Meng J, Yang W, Lv Y, Wen X. Long non-coding RNA SNHG1 suppresses cell migration and invasion and upregulates SOCS2 in human gastric carcinoma. Biochem Biophys Rep 2021; 27:101052. [PMID: 34179518 PMCID: PMC8214191 DOI: 10.1016/j.bbrep.2021.101052] [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: 01/18/2021] [Revised: 05/30/2021] [Accepted: 06/07/2021] [Indexed: 11/23/2022] Open
Abstract
Gastric carcinoma (GC) is one of the most common malignancies and the third leading cause of cancer-related deaths worldwide. Long noncoding RNAs (lncRNAs) may be an important class of functional regulators involved in human gastric cancers development. In this study, we investigated the clinical significance and function of lncRNA SNHG1 in GC. SNHG1 was significantly downregulated in GC tumor tissues compared with adjacent noncancerous tissues. Overexpression of SNHG1 in BGC-823 cells remarkably inhibited not only cell proliferation, migration, invasion in vitro, but also tumorigenesis and lung metastasis in the chick embryo chorioallantoic membrane (CAM) assay in vivo. Conversely, inhibition of SNHG1 by transfection of siRNA in AGS cells resulted in opposite phenotype changes. Mechanically, SNHG1 was found interacted with ILF3, NONO and SFPQ. RNA-seq combined with bioinformatic analysis identified a serial of downstream genes of SNHG1, including SOCS2, LOXL2, LTBP3, LTBP4. Overexpression of SNHG1 induced SOCS2 expression whereas knockdown of SNHG1 decreased SOCS2 expression. In addition, knockdown of SNHG1 promoted the activation of JAK2/STAT signaling pathway. Taken together, our data suggested that SNHG1 suppressed aggressive phenotype of GC cells and regulated SOCS2/JAK2/STAT pathway. SNHG1 was significantly downregulated in GC tumor tissues. SNHG1 suppressed proliferation and migration of GC cells. SNHG1 localized in nucleus of GC cells and interacted with ILF3, NONO and SFPQ. SNHG1 regulate SOCS2 expression in GC cell lines and JAK2/STAT signaling pathway in AGS cells.
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Affiliation(s)
- Shanshan Wang
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Haibo Han
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Junling Meng
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Wei Yang
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Yunwei Lv
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Xianzi Wen
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
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27
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Carli ALE, Afshar-Sterle S, Rai A, Fang H, O'Keefe R, Tse J, Ferguson FM, Gray NS, Ernst M, Greening DW, Buchert M. Cancer stem cell marker DCLK1 reprograms small extracellular vesicles toward migratory phenotype in gastric cancer cells. Proteomics 2021; 21:e2000098. [PMID: 33991177 DOI: 10.1002/pmic.202000098] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 04/15/2021] [Accepted: 05/12/2021] [Indexed: 12/15/2022]
Abstract
Doublecortin-like kinase 1 (DCLK1) is a putative cancer stem cell marker, a promising diagnostic and prognostic maker for malignant tumors and a proposed driver gene for gastric cancer (GC). DCLK1 overexpression in a majority of solid cancers correlates with lymph node metastases, advanced disease and overall poor-prognosis. In cancer cells, DCLK1 expression has been shown to promote epithelial-to-mesenchymal transition (EMT), driving disruption of cell-cell adhesion, cell migration and invasion. Here, we report that DCLK1 influences small extracellular vesicle (sEV/exosome) biogenesis in a kinase-dependent manner. sEVs isolated from DCLK1 overexpressing human GC cell line MKN1 (MKN1OE -sEVs), promote the migration of parental (non-transfected) MKN1 cells (MKN1PAR ). Quantitative proteome analysis of MKN1OE -sEVs revealed enrichment in migratory and adhesion regulators (STRAP, CORO1B, BCAM, COL3A, CCN1) in comparison to MKN1PAR -sEVs. Moreover, using DCLK1-IN-1, a specific small molecule inhibitor of DCLK1, we reversed the increase in sEV size and concentration in contrast to other EV subtypes, as well as kinase-dependent cargo selection of proteins involved in EV biogenesis (KTN1, CHMP1A, MYO1G) and migration and adhesion processes (STRAP, CCN1). Our findings highlight a specific role of DCLK1-kinase dependent cargo selection for sEVs and shed new light on its role as a regulator of signaling in gastric tumorigenesis.
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Affiliation(s)
- Annalisa L E Carli
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Shoukat Afshar-Sterle
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Alin Rai
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia.,Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Haoyun Fang
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia
| | - Ryan O'Keefe
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Janson Tse
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Fleur M Ferguson
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Nathanael S Gray
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts, USA
| | - Matthias Ernst
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - David W Greening
- Baker Heart and Diabetes Institute, Molecular Proteomics, Melbourne, Victoria, Australia.,Central Clinical School, Monash University, Melbourne, Victoria, Australia.,Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia.,Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Michael Buchert
- Cancer Inflammation Laboratory, Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia.,School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
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28
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Yuan L, Li J, Yang Y, Chen Y, Bu Y, Ye M, Mao X, Ma T, Yu L, Nan Y. LINC00514 promotes gastric cancer cell growth and EMT progression via miR-204-3p/KRAS. Aging (Albany NY) 2021; 13:12007-12015. [PMID: 33888645 PMCID: PMC8109083 DOI: 10.18632/aging.202905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 01/22/2021] [Indexed: 12/20/2022]
Abstract
Long noncoding RNAs (LncRNAs) participate in tumor development and tumorigenesis. However, the mechanism, function and expression of LINC00514 in GC remain unknown. We showed that LINC00514 was upregulated in GC specimens compared with nontumor specimens. Overexpression of LINC00514 induced cell growth and EMT progression in GC cells. By using bioinformatics prediction, we found that miR-204-3p contained binding sequences for LINC00514. Luciferase reporter analysis noted that miR-204-3p overexpression decreased the luciferase expression under LINC00514-wild-type and KRAS-wild-type reporters but not that under mutant reporter. Ectopic LINC00514 expression decreased miR-204-3p expression. miR-204-3p expression was decreased in GC specimens compared with nontumor specimens and that LINC00514 was negatively correlated with miR-204-3p in GC specimens. Furthermore, KRAS was identified as a target gene for miR-204-3p according to TargetScan. Elevated miR-204-3p expression inhibited KRAS expression in HGC-27 cells, and ectopic expression of LINC00514 enhanced KRAS expression. Elevated LINC00514 expression enhanced cell growth and EMT progression by sponging KRAS. Our data indicated that LINC00514 may act as an oncogene and therapeutic target for GC.
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Affiliation(s)
- Ling Yuan
- Pharmacy College of Ningxia Medical University, Yinchuan 750004, China.,Ningxia Medical University Key Laboratory of Hui Ethnic Medicine Modernization Ministry of Education, Yinchuan 750004, China
| | - Jiaxin Li
- Pharmacy College of Ningxia Medical University, Yinchuan 750004, China
| | - Yi Yang
- Pharmacy College of Ningxia Medical University, Yinchuan 750004, China
| | - Yan Chen
- Traditional Chinese Medicine College of Ningxia Medical University, Yinchuan 750004, China
| | - Yang Bu
- Hepatobiliary Surgery, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - Mengyi Ye
- Traditional Chinese Medicine College of Ningxia Medical University, Yinchuan 750004, China
| | - Xiongjie Mao
- Pharmacy College of Ningxia Medical University, Yinchuan 750004, China
| | - Tingting Ma
- Pharmacy College of Ningxia Medical University, Yinchuan 750004, China
| | - Lei Yu
- Department of Infectious Disease, The Fourth Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Yi Nan
- Ningxia Medical University Key Laboratory of Hui Ethnic Medicine Modernization Ministry of Education, Yinchuan 750004, China
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29
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Yang J, Yang K, Meng X, Liu P, Fu Y, Wang Y. Silenced SNHG1 Inhibited Epithelial-Mesenchymal Transition and Inflammatory Response of ARPE-19 Cells Induced by High Glucose. J Inflamm Res 2021; 14:1563-1573. [PMID: 33907437 PMCID: PMC8068511 DOI: 10.2147/jir.s299010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 03/09/2021] [Indexed: 12/27/2022] Open
Abstract
PURPOSE The lncRNA small nucleolar RNA host gene 1 (SNHG1) is a cerebral infarction-associated gene, its biological role and mechanism in diabetic retinopathy remain to be illuminated. The present study was designed to investigate the role of SNHG1 in high glucose induced human retinal pigment epithelial cells (ARPE-19). METHODS ARPE-19 cells were cultured and exposed to 60 mM high glucose for 48h, and 5.5mM glucose-exposed ARPE-19 cells were used as the control. The levels of the epithelial-mesenchymal transition (EMT) markers E-cadherin, ZO-1, vimentin and α-SMA were measured, and the Cell inflammatory response was evaluated by detecting IL-6 and IL-1β levels. Then, cell migration, proliferation and apoptosis were detected. The expression of the lncRNA SNHG1 in ARPE-19 cells was detected by quantitative real-time PCR. SNHG1 was knocked down by small interfering RNA (siRNA) transfection. The effects of SNHG1 inhibition on inflammation, EMT, migration, proliferation and apoptosis were observed. RESULTS The results showed that the expression of SNHG1 was significantly increased in ARPE-19 cells exposed to high glucose. Silencing SNHG1 reduced the expression of vimentin, α-SMA, and the expression of inflammatory chemokines IL-6 and IL-1β, inhibited migration and proliferation, elevated the expression of E-cadherin and ZO-1, and promoted apoptosis in ARPE-19 cells. CONCLUSION The lncRNA SNHG1 is involved in hyperglycemia-induced EMT and the inflammatory response of ARPE-19 cells and provides a new understanding of the pathogenesis of DR.
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Affiliation(s)
- Jing Yang
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, 266500, Shandong Province, People’s Republic of China
| | - Kun Yang
- Central Laboratory, Affiliated Hospital of Qingdao University, Qingdao, 266500, Shandong Province, People’s Republic of China
| | - Xuxia Meng
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, 266500, Shandong Province, People’s Republic of China
| | - Penghui Liu
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, 266500, Shandong Province, People’s Republic of China
| | - Yudong Fu
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, 266500, Shandong Province, People’s Republic of China
| | - Yibo Wang
- Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, 266500, Shandong Province, People’s Republic of China
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30
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Liu Y, Li L, Wu X, Qi H, Gao Y, Li Y, Chen D. MSC-AS1 induced cell growth and inflammatory mediators secretion through sponging miR-142-5p/DDX5 in gastric carcinoma. Aging (Albany NY) 2021; 13:10387-10395. [PMID: 33819916 PMCID: PMC8064188 DOI: 10.18632/aging.202800] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 12/10/2020] [Indexed: 12/18/2022]
Abstract
Emerging studies have noted that dysregulated lncRNAs are implicated in cancer progression and tumorigenesis. We first showed that MSC-AS1 was overexpressed in gastric cancer (GC) cells (HGC-27, MKN-45, SGC-7901 and MGC-803 cells) compared with GES cells. We observed that MSC-AS1 was upregulated in GC specimens compared with paired normal specimens. MSC-AS1 increased cell growth and cycle progression. Moreover, the overexpression of MSC-AS1 enhanced the secretion of the inflammatory mediators IL-1β, IL-6 and TNF-α. We found that the overexpression of MSC-AS1 inhibited the expression of miR-142-5p in HGC-27 cells. We noted that DDK5 was a target gene of miR-142-5p. The overexpression of miR-142-5p suppressed the luciferase activity of wild-type DDX5, but the luciferase activity of the mutant DDX5 was not changed. We showed that miR-142-5p was downregulated in GC specimens compared with paired normal specimens. MSC-AS1 expression was inversely correlated with miR-142-5p expression in GC specimens. MSC-AS1 induced cell growth, cell cycle progression and inflammatory mediator secretion by modulating DDX5. These results showed that MSC-AS1 functions as a key oncogene in the development of GC.
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Affiliation(s)
- Yan Liu
- Department of Oncology, The Fourth Hospital of China Medical University, Liaoning, Shengyang 110032, China
| | - Lin Li
- Department of Oncology, The Fourth Hospital of China Medical University, Liaoning, Shengyang 110032, China
| | - Xiaoxu Wu
- Department of Oncology, The Fourth Hospital of China Medical University, Liaoning, Shengyang 110032, China
| | - Haiyan Qi
- Department of Oncology, The Fourth Hospital of China Medical University, Liaoning, Shengyang 110032, China
| | - Yan Gao
- Department of Oncology, The Fourth Hospital of China Medical University, Liaoning, Shengyang 110032, China
| | - Yanqi Li
- Department of Oncology, The Fourth Hospital of China Medical University, Liaoning, Shengyang 110032, China
| | - Da Chen
- Department of General Practice, The Fourth Hospital of China Medical University, Liaoning, Shengyang 110032, China
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31
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Zhang Z, Li H, You J, Xue H, Tan X, Chao C. MicroRNA-223-5p suppresses the progression of nasopharyngeal carcinoma by targeting DCLK1. Oncol Lett 2021; 21:396. [PMID: 33777219 PMCID: PMC7988698 DOI: 10.3892/ol.2021.12657] [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: 09/03/2020] [Accepted: 02/08/2021] [Indexed: 11/10/2022] Open
Abstract
The aim of the present study was to investigate the function of microRNA (miR)-223-5p in the malignant biological behavior of nasopharyngeal carcinoma (NPC) and elucidate the underlying molecular mechanism. The expression levels of miR-223-5p and doublecortin-like kinase 1 (DCLK1) were detected via reverse transcription-quantitative PCR analysis. Cell viability was evaluated using Cell Counting Kit-8 assay. Cell migration and invasion were measured via Transwell assays, while a luciferase reporter assay was conducted to identify the interaction between miR-223-5p and DCLK1. The results demonstrated that miR-223-5p expression was significantly downregulated, whereas DCLK1 expression was significantly upregulated in NPC tissues and cells. Moreover, both miR-223-5p overexpression and DCLK1 silencing markedly suppressed the progression of NPC. It was also observed that miR-223-5p directly targeted DCLK1 and decreased its expression. Furthermore, it was suggested that DCLK1 overexpression may partially reverse the suppressive effects of miR-223-5p on the progression of NPC. Collectively, the results of the present study indicated that miR-223-5p may suppress NPC progression by targeting DCLK1, thereby indicating a novel potential approach to the diagnosis and treatment of NPC.
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Affiliation(s)
- Zhixuan Zhang
- Department of Otorhinolaryngology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Haifeng Li
- Department of Otorhinolaryngology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Jianqiang You
- Department of Otorhinolaryngology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Haixiang Xue
- Department of Otorhinolaryngology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Xiaoye Tan
- Department of Otorhinolaryngology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Changjiang Chao
- Department of Otorhinolaryngology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
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32
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Lorenzo N, Sabina DM, Guido C, Ilaria Grazia Z, Samira S, Valeria A, Daniele C, Diletta O, Antonella G, Marco M, Daniela B, Valerio DP, Andrea O, Agostino Maria DR, Fabio M, Maria Consiglia B, Jessica F, Sara M, Gian Luca G, Pierluigi Benedetti P, Paquale Bartomeo B, Felice G, Vincenzo C, Pietro I, Giuseppina C, Eugenio G, Domenico A. DCLK1, a Putative Stem Cell Marker in Human Cholangiocarcinoma. Hepatology 2021; 73:144-159. [PMID: 32978808 PMCID: PMC8243252 DOI: 10.1002/hep.31571] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 08/20/2020] [Accepted: 09/02/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND AIMS Cholangiocarcinoma (CCA) is a very aggressive cancer showing the presence of high cancer stem cells (CSCs). Doublecortin-like kinase1 (DCLK1) has been demonstrated as a CSC marker in different gastroenterological solid tumors. Our aim was to evaluate in vitro the expression and the biological function of DCLK1 in intrahepatic CCA (iCCA) and perihilar CCA (pCCA). APPROACH AND RESULTS Specimens surgically resected of human CCA were enzymatically digested, submitted to immunosorting for specific CSC markers (LGR5 [leucine-rich repeat-containing G protein-coupled receptor], CD [clusters of differentiation] 90, EpCAM [epithelial cell adhesion molecule], CD133, and CD13), and primary cell cultures were prepared. DCLK1 expression was analyzed in CCA cell cultures by real-time quantitative PCR, western blot, and immunofluorescence. Functional studies have been performed by evaluating the effects of selective DCLK1 inhibitor (LRRK2-IN-1) on cell proliferation (MTS [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium] assay, cell population doubling time), apoptosis, and colony formation capacity. DCLK1 was investigated in situ by immunohistochemistry and real-time quantitative PCR. DCLK1 serum concentration was analyzed by enzyme-linked immunosorbent assay. We describe DCLK1 in CCA with an increased gene and protein DCLK1 expression in pCCALGR5+ and in iCCACD133+ cells compared with unsorted cells. LRRK2-IN-1 showed an anti-proliferative effect in a dose-dependent manner. LRRK2-IN-1 markedly impaired cell proliferation, induced apoptosis, and decreased colony formation capacity and colony size in both iCCA and pCCA compared with the untreated cells. In situ analysis confirmed that DCLK1 is present only in tumors, and not in healthy tissue. Interestingly, DCLK1 was detected in the human serum samples of patients with iCCA (high), pCCA (high), HCC (low), and cirrhosis (low), but it was almost undetectable in healthy controls. CONCLUSIONS DCLK1 characterizes a specific CSC subpopulation of iCCACD133+ and pCCALGR5+ , and its inhibition exerts anti-neoplastic effects in primary CCA cell cultures. Human DCLK1 serum might represent a serum biomarker for the early CCA diagnosis.
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Affiliation(s)
- Nevi Lorenzo
- Department of BiosciencesUniversity of MilanMilanItaly,Department of Translational and Precision MedicineSapienza University of RomeRomeItaly
| | - Di Matteo Sabina
- Department of Translational and Precision MedicineSapienza University of RomeRomeItaly,Department of ImmunologyBambino Gesù Children’s Hospital, IRCCSRomeItaly
| | - Carpino Guido
- Department of MovementHuman and Health SciencesUniversity of Rome “Foro Italico”RomeItaly
| | | | - Safarikia Samira
- Department of Translational and Precision MedicineSapienza University of RomeRomeItaly
| | - Ambrosino Valeria
- Department of Translational and Precision MedicineSapienza University of RomeRomeItaly
| | - Costantini Daniele
- Department of Translational and Precision MedicineSapienza University of RomeRomeItaly
| | - Overi Diletta
- Department of AnatomicalHistological, Forensic Medicine and Orthopedics SciencesSapienza University of RomeRomeItaly
| | - Giancotti Antonella
- Department of Maternal and Child Health and Urologic SciencesUmberto I HospitalSapienza University of RomeRomeItaly
| | - Monti Marco
- Department of Maternal and Child Health and Urologic SciencesUmberto I HospitalSapienza University of RomeRomeItaly
| | - Bosco Daniela
- Department of Pathological Anatomy and CytodiagnosticSapienza University of RomeRomeItaly
| | - De Peppo Valerio
- Hepatobiliary and Pancreatic Surgery IRCCSRegina Elena National Cancer InstituteRomeItaly
| | - Oddi Andrea
- Hepatobiliary and Pancreatic Surgery IRCCSRegina Elena National Cancer InstituteRomeItaly
| | - De Rose Agostino Maria
- Surgery, Hepatobiliary UnitCatholic University of the Sacred Heart School of Medicine and SurgeryRomeItaly
| | - Melandro Fabio
- Department of General Surgery and Organ TransplantationSapienza University of RomeRomeItaly
| | | | - Faccioli Jessica
- Department of Medico‐Surgical Sciences and BiotechnologiesSapienza University of RomeRomeItaly
| | - Massironi Sara
- Division of Gastroenterology and Center for Autoimmune Liver DiseasesDepartment of Medicine and SurgeryUniversity of Milan‐BicoccaMonzaItaly,European Reference Network on Hepatological Diseases (ERN RARE‐LIVER)San Gerardo HospitalMonzaItaly
| | - Grazi Gian Luca
- Hepatobiliary and Pancreatic Surgery IRCCSRegina Elena National Cancer InstituteRomeItaly
| | - Panici Pierluigi Benedetti
- Department of Maternal and Child Health and Urologic SciencesUmberto I HospitalSapienza University of RomeRomeItaly
| | | | - Giuliante Felice
- Surgery, Hepatobiliary UnitCatholic University of the Sacred Heart School of Medicine and SurgeryRomeItaly
| | - Cardinale Vincenzo
- Department of Medico‐Surgical Sciences and BiotechnologiesSapienza University of RomeRomeItaly
| | - Invernizzi Pietro
- Division of Gastroenterology and Center for Autoimmune Liver DiseasesDepartment of Medicine and SurgeryUniversity of Milan‐BicoccaMonzaItaly,European Reference Network on Hepatological Diseases (ERN RARE‐LIVER)San Gerardo HospitalMonzaItaly
| | | | - Gaudio Eugenio
- Department of AnatomicalHistological, Forensic Medicine and Orthopedics SciencesSapienza University of RomeRomeItaly
| | - Alvaro Domenico
- Department of Translational and Precision MedicineSapienza University of RomeRomeItaly
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Tuft and Cancer Stem Cell Marker DCLK1: A New Target to Enhance Anti-Tumor Immunity in the Tumor Microenvironment. Cancers (Basel) 2020; 12:cancers12123801. [PMID: 33348546 PMCID: PMC7766931 DOI: 10.3390/cancers12123801] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/07/2020] [Accepted: 12/14/2020] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Doublecortin-like kinase 1 (DCLK1) is a tumor stem cell marker in colon, pancreatic, and potentially other cancers that has received wide attention recently. Aside from its role as a tuft cell marker in normal tissue and as a tumor stem cell marker in cancer, previous studies have demonstrated that silencing DCLK1 functionally reduces stemness, epithelial mesenchymal transition (EMT), and tumorigenesis in cancers. More recently, DCLK1′s role in regulating the inflammatory, pre-cancer, and tumor microenvironment including its ability to modulate immune cell mechanisms has started to come into focus. Importantly, clinically viable therapeutic means of targeting DCLK1 have finally become available in the form of kinase inhibitors, monoclonal antibodies, and chimeric antigen receptor T cells (CAR-T). Herein, we comprehensively review the mechanistic role of DCLK1 in the tumor microenvironment, assess the potential for targeting DCLK1 in colon, pancreatic and renal cancer. Abstract Microtubule-associated doublecortin-like kinase 1 (DCLK1) is an accepted marker of tuft cells (TCs) and several kinds of cancer stem cells (CSCs), and emerging evidence suggests that DCLK1-positive TCs participate in the initiation and formation of inflammation-associated cancer. DCLK1-expressing CSCs regulate multiple biological processes in cancer, promote resistance to therapy, and are associated with metastasis. In solid tumor cancers, tumor epithelia, immune cells, cancer-associated fibroblasts, endothelial cells and blood vessels, extracellular matrix, and hypoxia all support a CSC phenotype characterized by drug resistance, recurrence, and metastasis. Recently, studies have shown that DCLK1-positive CSCs are associated with epithelial-mesenchymal transition, angiogenesis, and immune checkpoint. Emerging data concerning targeting DCLK1 with small molecular inhibitors, monoclonal antibodies, and chimeric antigen receptor T-cells shows promising effects on inhibiting tumor growth and regulating the tumor immune microenvironment. Overall, DCLK1 is reaching maturity as an anti-cancer target and therapies directed against it may have potential against CSCs directly, in remodeling the tumor microenvironment, and as immunotherapies.
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LncLocation: Efficient Subcellular Location Prediction of Long Non-Coding RNA-Based Multi-Source Heterogeneous Feature Fusion. Int J Mol Sci 2020; 21:ijms21197271. [PMID: 33019721 PMCID: PMC7582431 DOI: 10.3390/ijms21197271] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 12/13/2022] Open
Abstract
Recent studies uncover that subcellular location of long non-coding RNAs (lncRNAs) can provide significant information on its function. Due to the lack of experimental data, the number of lncRNAs is very limited, experimentally verified subcellular localization, and the numbers of lncRNAs located in different organelle are wildly imbalanced. The prediction of subcellular location of lncRNAs is actually a multi-classification small sample imbalance problem. The imbalance of data results in the poor recognition effect of machine learning models on small data subsets, which is a puzzling and challenging problem in the existing research. In this study, we integrate multi-source features to construct a sequence-based computational tool, lncLocation, to predict the subcellular location of lncRNAs. Autoencoder is used to enhance part of the features, and the binomial distribution-based filtering method and recursive feature elimination (RFE) are used to filter some of the features. It improves the representation ability of data and reduces the problem of unbalanced multi-classification data. By comprehensive experiments on different feature combinations and machine learning models, we select the optimal features and classifier model scheme to construct a subcellular location prediction tool, lncLocation. LncLocation can obtain an 87.78% accuracy using 5-fold cross validation on the benchmark data, which is higher than the state-of-the-art tools, and the classification performance, especially for small class sets, is improved significantly.
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Molecular Bases of Mechanisms Accounting for Drug Resistance in Gastric Adenocarcinoma. Cancers (Basel) 2020; 12:cancers12082116. [PMID: 32751679 PMCID: PMC7463778 DOI: 10.3390/cancers12082116] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 12/24/2022] Open
Abstract
Gastric adenocarcinoma (GAC) is the most common histological type of gastric cancer, the fifth according to the frequency and the third among the deadliest cancers. GAC high mortality is due to a combination of factors, such as silent evolution, late clinical presentation, underlying genetic heterogeneity, and effective mechanisms of chemoresistance (MOCs) that make the available antitumor drugs scarcely useful. MOCs include reduced drug uptake (MOC-1a), enhanced drug efflux (MOC-1b), low proportion of active agents in tumor cells due to impaired pro-drug activation or active drug inactivation (MOC-2), changes in molecular targets sensitive to anticancer drugs (MOC-3), enhanced ability of cancer cells to repair drug-induced DNA damage (MOC-4), decreased function of pro-apoptotic factors versus up-regulation of anti-apoptotic genes (MOC-5), changes in tumor cell microenvironment altering the response to anticancer agents (MOC-6), and phenotypic transformations, including epithelial-mesenchymal transition (EMT) and the appearance of stemness characteristics (MOC-7). This review summarizes updated information regarding the molecular bases accounting for these mechanisms and their impact on the lack of clinical response to the pharmacological treatment currently used in GAC. This knowledge is required to identify novel biomarkers to predict treatment failure and druggable targets, and to develop sensitizing strategies to overcome drug refractoriness in GAC.
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