scholarly journals ORC6, Negatively Regulated by miR-1-3p, Promotes Proliferation, Migration, and Invasion of Hepatocellular Carcinoma Cells

2021 ◽  
Vol 9 ◽  
Author(s):  
Hu Chen ◽  
Lequn Bao ◽  
Jianhua Hu ◽  
Dongde Wu ◽  
Xianli Tong
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Cycle ◽  
Cell Lines ◽  
Cell Cycle Progression ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Regulatory Function ◽  
Migration And Invasion ◽  
Cycle Progression ◽  
Hcc Cells

BackgroundIn recent years, microRNA-1-3p (miR-1-3p) has been linked to the progression of multiple cancers, whereas little is known about its role in hepatocellular carcinoma (HCC). Herein, we investigated the function of miR-1-3p in HCC, and its regulatory function on origin recognition complex subunit 6 (ORC6).MethodsQuantitative real-time polymerase chain reaction (qRT-PCR) was performed for detecting the expression levels of miR-1-3p and ORC6 mRNA in HCC samples and cell lines. ORC6 expression at the protein level was quantified by Western blot. After gain-of-function and loss-of-function models were established, cell counting kit-8 (CCK-8) assays, Transwell assays, flow cytometry, and 5-Ethynyl-2′-deoxyuridine (EdU) assay were performed for examining cell proliferation, migration, invasion, cell cycle, and apoptosis. The targeting relationship between miR-1-3p and ORC6 was confirmed with bioinformatic analysis and dual-luciferase reporter assays.ResultsThe expression of miR-1-3p was reduced in HCC samples and cell lines. Overexpression of miR-1-3p suppressed the proliferation, migration, and invasion, and induced cell-cycle arrest and apoptosis of HCC cells, whereas the opposite effects were induced by miR-1-3p inhibition. ORC6 is identified as a novel target of miR-1-3p, the expression of which is negatively correlated with miR-1-3p expression in HCC tissues. ORC6 overexpression facilitated the proliferation, migration, invasion, and cell cycle progression, and reduced apoptosis of HCC cells, whereas the opposite effects were induced by ORC6 knockdown. What is more, ORC6 overexpression counteracted the biological functions of miR-1-3p in HCC cells.ConclusionMiR-1-3p targets ORC6 to suppress the proliferation, migration, invasion, and cell cycle progression, and promote apoptosis of HCC cells.

scholarly journals Circular RNA hsa_circ_0061395 accelerates hepatocellular carcinoma progression via regulation of the miR-877-5p/PIK3R3 axis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yanhui Yu ◽  
Lijuan Bian ◽  
Renfei Liu ◽  
Yitong Wang ◽  
Xia Xiao
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Cycle ◽  
Cell Cycle Progression ◽  
Circular Rna ◽  
Cell Counting ◽  
Regulatory Subunit ◽  
Luciferase Reporter ◽  
Hcc Cells

Abstract Background Circular RNA hsa_circ_0061395 (circ_0061395) has been reported to accelerate the advancement of hepatocellular carcinoma (HCC). However, the regulatory mechanism by which circ_0061395 modulates the progression of HCC is unclear. Methods The morphology and size of exosomes were analyzed by transmission electron microscope (TEM) and nanoparticle-tracking analysis (NTA). Protein levels were detected by western blotting. Expression levels of circ_0061395, microRNA (miR)-877-5p, and phosphoinositide-3-kinase regulatory subunit 3 (PIK3R3) mRNA were assessed by quantitative real time polymerase chain reaction (qRT-PCR). The proliferation, invasion, migration, cell cycle progression, and apoptosis were analyzed by cell counting kit-8 (CCK-8), plate clone, transwell, or flow cytometry assays. The targeting relationship between circ_0061395 or PIK3R3 and miR-877-5p was verified using the dual-luciferase reporter and/or RNA immunoprecipitation (RIP) assays. Xenograft assay was performed to confirm the biological function of circ_0061395 in HCC. Results Circ_0061395 was upregulated in HCC tissues, serum, cells, and serum-derived exosomes. Circ_0061395 silencing decreased tumor growth in vivo, and induced cell cycle arrest, apoptosis, repressed proliferation, invasion, and migration of HCC cells in vitro. MiR-877-5p was downregulated while PIK3R3 was upregulated in HCC. Circ_0061395 regulated PIK3R3 expression via competitively binding to miR-877-5p. MiR-877-5p inhibitor overturned circ_0061395 knockdown-mediated influence on malignant behaviors of HCC cells. PIK3R3 overexpression reversed the suppressive influence of miR-877-5p mimic on malignant behaviors of HCC cells. Conclusion Circ_0061395 facilitated HCC progression via regulating the miR-877-5p/PIK3R3 axis, providing a new perspective on the advancement of HCC.

scholarly journals Long noncoding RNA UPK1A-AS1 indicates poor prognosis of hepatocellular carcinoma and promotes cell proliferation through interaction with EZH2

2020 ◽  
Vol 39 (1) ◽  
Author(s):  
Dong-Yan Zhang ◽  
Qing-Can Sun ◽  
Xue-Jing Zou ◽  
Yang Song ◽  
Wen-Wen Li ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Cycle ◽  
Western Blotting ◽  
Poor Prognosis ◽  
Cell Cycle Progression ◽  
Gene Set Enrichment Analysis ◽  
Luciferase Reporter ◽  
Cycle Progression ◽  
Qrt Pcr ◽  
Hcc Cells

Abstract Background Dysregulation of long non-coding RNAs (lncRNAs) is responsible for cancer initiation and development, positioning lncRNAs as not only biomarkers but also promising therapeutic targets for cancer treatment. A growing number of lncRNAs have been reported in hepatocellular carcinoma (HCC), but their functional and mechanistic roles remain unclear. Methods Gene Set Enrichment Analysis was used to investigate the molecular mechanism of UPK1A antisense RNA 1 (UPK1A-AS1). Cell Counting Kit-8 assays, EdU assays, flow cytometry, western blotting, and xenograft assays were used to confirm the role of UPK1A-AS1 in the proliferation of HCC cells in vitro and in vivo. Bioinformatics analyses and quantitative polymerase chain reaction (qRT-PCR) were performed to explore the interplay between UPK1A-AS1 and enhancer of zeste homologue 2 (EZH2). RNA immunoprecipitation (RIP), RNA pull-down assays, western blotting, and qRT-PCR were conducted to confirm the interaction between UPK1A-AS1 and EZH2. The interaction between UPK1A-AS1 and miR-138-5p was examined by luciferase reporter and RIP assays. Finally, the expression level and prognosis value of UPK1A-AS1 in HCC were analyzed using RNA sequencing data from The Cancer Genome Atlas datasets. Results We showed that UPK1A-AS1, a newly identified lncRNA, promoted cellular proliferation and tumor growth by accelerating cell cycle progression. Cell cycle-related genes, including CCND1, CDK2, CDK4, CCNB1, and CCNB2, were significantly upregulated in HCC cells overexpressing UPK1A-AS1. Furthermore, overexpression of UPK1A-AS1 could protect HCC cells from cis-platinum toxicity. Mechanistically, UPK1A-AS1 interacted with EZH2 to mediate its nuclear translocation and reinforce its binding to SUZ12, leading to increased H27K3 trimethylation. Targeting EZH2 with specific small interfering RNA impaired the UPK1A-AS1-mediated upregulation of proliferation and cell cycle progression-related genes. Moreover, miR-138-5p was identified as a direct target of UPK1A-AS1. Additionally, UPK1A-AS1 was significantly upregulated in HCC, and the upregulation of UPK1A-AS1 predicted poor prognosis for patients with HCC. Conclusions Our study revealed that UPK1A-AS1 promotes HCC development by accelerating cell cycle progression through interaction with EZH2 and sponging of miR-138-5p, suggesting that UPK1A-AS1 possesses substantial potential as a novel biomarker for HCC prognosis and therapy.

scholarly journals Long noncoding RNA UPK1A-AS1 indicates poor prognosis of hepatocellular carcinoma and promotes cell proliferation through interaction with EZH2

2020 ◽  
Author(s):  
Dong-Yan Zhang ◽  
Qing-Can Sun ◽  
Xue-Jing Zou ◽  
Yang Song ◽  
Wen-Wen Li ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Cycle ◽  
Western Blotting ◽  
Poor Prognosis ◽  
Cell Cycle Progression ◽  
Gene Set Enrichment Analysis ◽  
Luciferase Reporter ◽  
Cycle Progression ◽  
Qrt Pcr ◽  
Hcc Cells

Abstract Background: Dysregulation of long non-coding RNAs (lncRNAs) is responsible for cancer initiation and development, positioning lncRNAs as not only biomarkers but also promising therapeutic targets for cancer treatment. A growing number of lncRNAs have been reported in hepatocellular carcinoma (HCC), but their functional and mechanistic roles remain unclear. Methods: Gene Set Enrichment Analysis was used to investigate the molecular mechanism of UPK1A antisense RNA 1 (UPK1A-AS1). Cell Counting Kit-8 assays, EdU assays, flow cytometry, western blotting, and xenograft assays were used to confirm the role of UPK1A-AS1 in the proliferation of HCC cells in vitro and in vivo . Bioinformatics analyses and quantitative polymerase chain reaction (qRT-PCR) were performed to explore the interplay between UPK1A-AS1 and enhancer of zeste homologue 2 (EZH2). RNA immunoprecipitation (RIP), RNA pull-down assays, western blotting, and qRT-PCR were conducted to confirm the interaction between UPK1A-AS1 and EZH2. The interaction between UPK1A-AS1 and miR-138-5p was examined by luciferase reporter and RIP assays. Finally, the expression level and prognosis value of UPK1A-AS1 in HCC were analyzed using RNA sequencing data from The Cancer Genome Atlas datasets. Results: We showed that UPK1A-AS1, a newly identified lncRNA, promoted cellular proliferation and tumor growth by accelerating cell cycle progression. Cell cycle-related genes, including CCND1, CDK2, CDK4, CCNB1, and CCNB2, were significantly upregulated in HCC cells overexpressing UPK1A-AS1. Furthermore, overexpression of UPK1A-AS1 could protect HCC cells from cis-platinum toxicity. Mechanistically, UPK1A-AS1 interacted with EZH2 to mediate its nuclear translocation and reinforce its binding to SUZ12, leading to increased H27K3 trimethylation. Targeting EZH2 with specific small interfering RNA impaired the UPK1A-AS1-mediated upregulation of proliferation and cell cycle progression-related genes. Moreover, miR-138-5p was identified as a direct target of UPK1A-AS1. Additionally, UPK1A-AS1 was significantly upregulated in HCC, and the upregulation of UPK1A-AS1 predicted poor prognosis for patients with HCC. Conclusions: Our study revealed that UPK1A-AS1 promotes HCC development by accelerating cell cycle progression through interaction with EZH2 and sponging of miR-138-5p, suggesting that UPK1A-AS1 possesses substantial potential as a novel biomarker for HCC prognosis and therapy.

scholarly journals Circ_0000215 Exerts Oncogenic Function in Nasopharyngeal Carcinoma by Targeting miR-512-5p

2021 ◽  
Vol 9 ◽  
Author(s):  
Xinping Chen ◽  
Weihua Xu ◽  
Zhichao Ma ◽  
Juan Zhu ◽  
Junjie Hu ◽  
...  
Keyword(s):  
Nasopharyngeal Carcinoma ◽  
Cell Lines ◽  
Cell Counting ◽  
Regulatory Subunit ◽  
Luciferase Reporter ◽  
Regulatory Function ◽  
Migration And Invasion ◽  
Circular Rnas

Background: Increasing circular RNAs (circRNAs) are reported to participate in cancer progression. Nonetheless, the role of circRNAs in nasopharyngeal carcinoma (NPC) has not been fully clarified. This work is aimed to probe the role of circ_0000215 in NPC.Methods: Circ_0000215 expression in NPC tissues and cell lines was examined by quantitative real-time polymerase chain reaction (qRT-PCR). Cell counting kit-8 (CCK-8) assay, 5-bromo-2′-deoxyuridine (BrdU) assay, scratch healing assay and Transwell experiment were executed to investigate the regulatory function of circ_0000215 on the proliferation, migration and invasion of NPC cells. RNA immunoprecipitation (RIP), pull-down and dual-luciferase reporter experiments were utilized to determine the binding relationship between circ_0000215 and miR-512-5p, and between miR-512-5p and phosphoinositide-3-kinase regulatory subunit 1 (PIK3R1) 3′UTR. The effects of circ_0000215 on NPC growth and metastasis in vivo were examined with nude mice model. Western blot was applied to detect the regulatory effects of circ_0000215 and miR-512-5p on PIK3R1 expression.Results: Circ_0000215 was overexpressed in NPC tissues and cell lines. The functional experiments confirmed that knockdown of circ_0000215 impeded the growth and metastasis of NPC cells in vitro and in vivo. Additionally, circ_0000215 could also work as a molecular sponge to repress miR-512-5p expression. PIK3R1 was validated as a target gene of miR-512-5p, and circ_0000215 could increase the expression level of PIK3R1 in NPC cells via suppressing miR-512-5p.Conclusion: Circ_0000215 is overexpressed in NPC and exerts oncogenic effects in NPC through regulating miR-512-5p/PIK3R1 axis.

ESM-1 silencing decreased cell survival, migration, and invasion and modulated cell cycle progression in hepatocellular carcinoma

Amino Acids ◽  
2010 ◽  
Vol 40 (3) ◽  
pp. 1003-1013 ◽  
Author(s):  
Yun Hee Kang ◽  
Na Young Ji ◽  
Chung Il Lee ◽  
Hee Gu Lee ◽  
Jae Wha Kim ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Cycle ◽  
Cell Survival ◽  
Cell Cycle Progression ◽  
Migration And Invasion ◽  
Cycle Progression

scholarly journals LpCat1 Promotes Malignant Transformation of Hepatocellular Carcinoma Cells by Directly Suppressing STAT1

2021 ◽  
Vol 11 ◽  
Author(s):  
Weidan Ji ◽  
Zhangxiao Peng ◽  
Bin Sun ◽  
Lei Chen ◽  
Qin Zhang ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cancer Progression ◽  
Cell Cycle Progression ◽  
Migration And Invasion ◽  
Cycle Progression ◽  
Clinical Gene Therapy ◽  
First Time ◽  
Hcc Cells

Hepatocellular carcinoma (HCC) is a malignant cancer with rapid proliferation and high metastasis ability. To explore the crucial genes that maintain the aggressive behaviors of cancer cells is very important for clinical gene therapy of HCC. LpCat1 was reported to be highly expressed and exert pro-tumorigenic effect in a variety of cancers, including HCC. However, its detailed molecular mechanism remained unclear. In this study, we confirmed that LpCat1 was up-regulated in HCC tissues and cancer cell lines. The overexpressed LpCat1 promoted the proliferation, migration and invasion of HCC cells, and accelerated cell cycle progression, while knocking down LpCat1 significantly inhibited cell proliferation, migration and invasion in vitro and in vivo, and arrested HCC cells at G0/G1 phase. Moreover, we proved for the first time that LpCat1 directly interacted with STAT1 which was generally recognized as a tumor suppressor in HCC. High levels of LpCat1 in HCC could inhibit STAT1 expression, up-regulate CyclinD1, CyclinE, CDK4 and MMP-9, and decrease p27kip1 to promote cancer progression. Conversely, down-regulation of LpCat1 would cause the opposite changes to repress the viability and motility of HCC cells. Consequently, we concluded that LpCat1 was a contributor to progression and metastasis of HCC by interacting with STAT1.

scholarly journals MicroRNA-183-5p contributes to malignant progression through targeting PDCD4 in human hepatocellular carcinoma

2020 ◽  
Vol 40 (10) ◽  
Author(s):  
Xiaohui Duan ◽  
Wei Li ◽  
Peng Hu ◽  
Bo Jiang ◽  
Jianhui Yang ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Overall Survival ◽  
Tumor Growth ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Clinical Samples ◽  
Hcc Cells

Abstract Hepatocellular carcinoma (HCC) remains one of the most common malignant tumors worldwide. The present study aimed to investigate the biological role of microRNA-183-5p (miR-183-5p), a novel tumor-related microRNA (miRNA), in HCC and illuminate the possible molecular mechanisms. The expression patterns of miR-183-5p in clinical samples were characterized using qPCR analysis. Kaplan–Meier survival curve was applied to evaluate the correlation between miR-183-5p expression and overall survival of HCC patients. Effects of miR-183-5p knockdown on HCC cell proliferation, apoptosis, migration and invasion capabilities were determined via Cell Counting Kit-8 (CCK8) assays, flow cytometry, scratch wound healing assays and Transwell invasion assays, respectively. Mouse neoplasm transplantation models were established to assess the effects of miR-183-5p knockdown on tumor growth in vivo. Bioinformatics analysis, dual-luciferase reporter assays and rescue assays were performed for mechanistic researches. Results showed that miR-183-5p was highly expressed in tumorous tissues compared with adjacent normal tissues. Elevated miR-183-5p expression correlated with shorter overall survival of HCC patients. Moreover, miR-183-5p knockdown significantly suppressed proliferation, survival, migration and invasion of HCC cells compared with negative control treatment. Consistently, miR-183-5p knockdown restrained tumor growth in vivo. Furthermore, programmed cell death factor 4 (PDCD4) was identified as a direct target of miR-183-5p. Additionally, PDCD4 down-regulation was observed to abrogate the inhibitory effects of miR-183-5p knockdown on malignant phenotypes of HCC cells. Collectively, our data suggest that miR-183-5p may exert an oncogenic role in HCC through directly targeting PDCD4. The current study may offer some new insights into understanding the role of miR-183-5p in HCC.

scholarly journals LncRNA SLC16A1-AS1 Contributes to the Progression of Hepatocellular Carcinoma Cells by Modulating miR-411/MITD1 Axis

2021 ◽  
Author(s):  
Chun Duan ◽  
Bin Quan ◽  
Ni Wang ◽  
Jianghua Yang ◽  
Yan-Lin Yu
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Lines ◽  
Carcinoma Cells ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
High Morbidity ◽  
Transwell Assay ◽  
Downstream Target ◽  
Common Malignancy ◽  
Hcc Cells

Abstract Background: Hepatocellular carcinoma (HCC) is a common malignancy with high morbidity. The current study aimed to explore the molecular mechannism of lncRNA SLC16A1-AS1 in the tumorigenesis of HCC.Material and Methods: The expression of SLC16A1-AS1 and miR-411 were examined in clinical HCC tissues. HCC cell lines Hep3B and Huh-7 were employed and transfected with si-SLC16A1-AS1. The correlation between SLC16A1-AS1 and miR-411 was verified by luciferase reporter assay. Cell viability was detected by CCK-8 assay. Cell migration and invasion capacity were examined by transwell assay. The protein level of MITD1 was analyzed by western blotting.Results: The expression of SLC16A1-AS1 markedly increased in HCC tissues and cell lines. Subsequent studies identified SLC16A1-AS1 as a downstream target of miR-411. In addition, SLC16A1-AS1 knockdown and miR-411 overexpression significantly stagnated progression of HCC cells. SLC16A1-AS1 knockdown also downregulated MITD1 levels. Conclusion: Our findings showed that SLC16A1-AS1 was overexpressed in HCC cells and tissues. SLC16A1-AS1 promoted the malignant characteristics of HCC cells and acted as an oncogene. Its regulatory effect may be associated with miR-411/MITD1 axis. Therefore, SLC16A1-AS1 has a potential be used as a biomarker or therapeutic target for the treatment of HCC.

The CALM/AF10 Interactor CATS Is a Substrate of KIS, a Positive Regulator of Cell Cycle Progression in Leukemia Cells

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 2549-2549
Author(s):  
Leticia Fröhlich Archangelo ◽  
Fabíola Traina ◽  
Philipp A Greif ◽  
Alexandre Maucuer ◽  
Valérie Manceau ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Western Blot ◽  
Cell Lines ◽  
Blot Analysis ◽  
Western Blot Analysis ◽  
Cell Cycle Progression ◽  
Phosphorylation Site ◽  
Luciferase Reporter ◽  
Wild Type ◽  
Cycle Progression

Abstract Abstract 2549 The CATS protein (also known as FAM64A and RCS1) was first identified as a novel CALM (PICALM) interactor that interacts with and influences the subcellular localization of CALM/AF10, a leukemic fusion protein found in acute myeloid leukemia (AML), acute lymphoblastic leukemia (ALL) and in malignant lymphoma. CATS is highly expressed in leukemia, lymphoma and tumor cell lines but not in non-proliferating T-cells or in peripheral blood lymphocytes (PBLs). The protein levels of CATS are cell cycle-dependent, induced by mitogens (e.g. PHA) and correlate with the proliferative state of the cell. Thus, CATS is as a marker for proliferation. Using CATS as a bait in a yeast two-hybrid screen we identified the Kinase Interacting Stathmin (KIS or UHMK1) as a CATS interacting partner. KIS is a serine/threonine kinase that positively regulates cell cycle progression through phosphorylation of p27KIP in leukemia cell lines. The interaction between CATS and KIS was confirmed by GST pull-down, and co-immunopreciptation. KIS interaction region was mapped to CATS N-terminal portion. Searching through the phosphorylation site databases PhosphoSitePlus™ (http://www.phosphosite.org) and Phosida (http://www.phosida.com/) we identified 9 residues within CATS shown to be subject of post-translational modification. Phosphorylation assay with recombinant KIS demonstrated that this kinase efficiently phosphorylated full length CATS and its N-terminal part, but not the C-terminal of the protein. To map the KIS phosphorylation site of CATS, peptides comprising all known phospho-sites of CATS N-terminal (S16, S129, S131, T133 and S135) and mutations of the putative KIS target motif (S129 and S131) were tested for KIS phosphorylation. Thereby, we identified CATS S131 as the unique target site for KIS phosphorylation. Western blot analysis of U2OS cells, which had undergone cell cycle synchronization by a double thymidine block, revealed that KIS fluctuated throughout the cell cycle and counteracted CATS levels. Furthermore, we analyzed KIS protein expression on bone marrow mononuclear cells (MNCs) of MDS and AML patients. We studied 5 healthy donors, 13 MDS patients (7 low-risk [RA/RARS] and 6 high-risk [RAEB/RAEBt] according to FAB classification) and 10 AML patients (7 de novo and 3 secondary). Western blot analysis revealed elevated levels of KIS in MDS and AML compared to the control samples. We used a reporter gene assay in order to determine the influence of KIS on the CATS-mediated transcriptional repression and to elucidate the role of KIS-dependent phosphorylation of CATS at serine 131 in this context. Coexpression of GAL4-DBD-CATS and KIS enhanced the inhibitory function of CATS on transactivation of the GAL4-tk-luciferase reporter. This effect of KIS was observed for both CATS wild type and CATS phospho-defective mutant (CATS S131A) but not when the kinase dead mutant KISK54R was used. Moreover, CATS phosphomimetic clone (CATSS131D) exerted the same transcriptional activity as the CATS wild type. These results demonstrate that KIS enhances the transcriptional repressor activity of CATS, and this effect is independent of CATS phosphorylation at S131 but dependent on the kinase activity of KIS. Finally, we investigated whether CATS would affect the CALM/AF10 function as an aberrant transcription factor. Coexpression of constant amounts of GAL4-DBD-CALM/AF10 and increasing amounts of CATS lead to reduced transactivation capacity of CALM/AF10 in a dose dependent manner. Our results show that CATS not only interacts with but is also a substrate for KIS, suggesting that CATS function might be modulated through phosphorylation events. The identification of the CATS-KIS interaction further supports the hypothesis that CATS plays an important role in the control of cell proliferation. Moreover the elevated levels of KIS in hematological malignances suggest that KIS could regulate CATS activity and/or function in highly proliferating leukemic cells. Thus our results indicate that CATS function might be important to understand the malignant transformation mediated by CALM/AF10. Disclosures: No relevant conflicts of interest to declare.

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