scholarly journals MicroRNA-142-3p Inhibits Tumorigenesis of Colorectal Cancer via Suppressing the Activation of Wnt Signaling by Directly Targeting to β-Catenin

2021 ◽  
Vol 10 ◽  
Author(s):  
Peng Liu ◽  
Fuao Cao ◽  
Jinke Sui ◽  
Yonggang Hong ◽  
Qizhi Liu ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Wnt Signaling ◽  
Mirna Expression ◽  
Colony Formation ◽  
Expression Profiles ◽  
Underlying Mechanism ◽  
Luciferase Assay ◽  
Nuclear Accumulation ◽  
Altered Expression

BackgroundAltered expression profile of microRNAs (miRNAs) was reported to be associated with colorectal cancer (CRC). The aims of this study are to identify the changed miRNAs in the plasma of CRC patients and explore the underlying mechanism of these miRNAs during tumorigenesis.MethodsPlasma miRNA expression profiles were compared between healthy people and CRC patients. MiRNA expression was measured using quantitative real-time PCR. Colony formation and MTT assays were used to test cell proliferation. Luciferase assay, immunohistochemistry and Western blotting were employed to explore the molecular mechanism.ResultsMiR-142-3p level was found as the most significantly repressed miRNA in CRC patients. Overexpression of miR-142-3p dramatically repressed colony formation and cell proliferation of both HT29 and HCT116 cells while inhibition of miR-142-3p promoted those of the cells. Interestingly, overexpression of miR-142-3p reduced the level and nuclear accumulation of β-catenin. We further observed that miR-142-3p remarkably inhibited the transcriptional activity of β-catenin gene (CTNNB1). However, mutations in the predicted binding sites blocked this inhibition, suggesting that miR-142-3p may directly bind to the mRNA of β-catenin.ConclusionIn conclusion, we identified miR-142-3p exerts its function as a tumor suppressor through blocking the activation of Wnt signaling by directly targeting to CTNNB1.

scholarly journals The circular RNA circSlc7a11 promotes bone cancer pain pathogenesis in rats by modulating LLC-WRC 256 cell proliferation and apoptosis

2021 ◽  
Author(s):  
Han-Wen Chen ◽  
Xiao-Xia Zhang ◽  
Zhu-Ding Peng ◽  
Zu-Min Xing ◽  
Yi-Wen Zhang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Cancer Pain ◽  
Expression Profiles ◽  
Bone Cancer ◽  
Circular Rna ◽  
Differentially Expressed ◽  
Bone Cancer Pain ◽  
Circular Rnas ◽  
Altered Expression ◽  
Proliferation And Apoptosis

AbstractTreatment of bone cancer pain (BCP) caused by bone metastasis in advanced cancers remains a challenge in clinical oncology, and the underlying mechanisms of BCP are poorly understood. This study aimed to investigate the pathogenic roles of circular RNAs (circRNAs) in regulating cancer cell proliferation and BCP development. Eight differentially expressed circRNAs in the rat spinal cord were validated by agarose gel electrophoresis and Sanger sequencing. Expression of circRNAs and mRNAs was detected by quantitative RT-PCR. MTS assay and flow cytometry were performed to analyze cell proliferation and apoptosis, respectively. Differentially expressed mRNA profiles were characterized by deep RNA sequencing, hierarchical clustering, and functional categorization. The interactions among circRNAs, microRNAs (miRNAs), and mRNAs were predicted using TargetScan. Additionally, western blot was performed to determine the protein levels of Pax8, Isg15, and Cxcl10. Multiple circRNAs were differentially expressed in the spinal cords of BCP model rats; of these, circSlc7a11 showed the greatest increase in expression. The overexpression of circSlc7a11 significantly promoted cell proliferation and repressed apoptosis of LLC-WRC 256 and UMR-106 cells, whereas circSlc7a11 silencing produced the opposite effects. Altered expression of circSlc7a11 also induced substantial changes in the mRNA expression profiles of LLC-WRC 256 cells; these changes were linked to multiple apoptotic processes and signaling pathways, such as the chemokine signaling pathway, and formed a complex circRNA/miRNA/mRNA network. Additionally, Pax8, Isg15, and Cxc110 protein level in LLC-WRC 256 cells was consistent with the mRNA results. The circRNA circSlc7a11 regulates rat BCP development by modulating LLC-WRC 256 cell proliferation and apoptosis through multiple-signaling mechanisms.

Evaluation of MACF1-regulatory non-coding RNA as a potential therapeutic target in Colorectal Cancer

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Rowaida Mohammed Reda M. M Aboushahba ◽  
Fayda Ibrahim Abdel Motaleb ◽  
Ahmed Abdel Aziz Abou-Zeid ◽  
Enas Samir Nabil ◽  
Dalia Abdel-Wahab Mohamed ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Wnt Signaling ◽  
Cell Line ◽  
Signaling Pathway ◽  
Therapeutic Target ◽  
Molecular Mechanisms ◽  
Wnt Signaling Pathway ◽  
Control Group ◽  
Potential Therapeutic Target

ABSTRACT Colorectal cancer (CRC) is one of the leading causes of cancer-related deaths world-wide. There is an increasing need for the identification of novel biomarkers/targets for early diagnosis and for the development of novel chemopreventive and therapeutic agents for CRC. Recently, MACF1 gene has emerged as a potential therapeutic target in cancer as it involved in processes critical for tumor cell proliferation, invasion and metastasis. It is suggested that MACF1 may function in cancers through Wnt signaling. MiR-34a is a well-known tumor suppressor miRNA.miR-34a targets MACF1 gene as a part of the wnt signaling pathway. In this study, 40 colonic tissues were collected from CRC patients (20) and control subjects (20). miR-34a-5p was assessed by real time PCR in all study groups. The results showed highly significant decrease (P < 0.01) in miR-34a relative expression in the CRC group (median RQ 0.13) when compared to the benign group (median RQ 5.3) and the healthy control group (median RQ 19.63). miR-34a mimic and inhibitor were transfected in CaCo-2 cell line and proliferation was assessed. The transfection of the cell line with miR-34a mimic decreased cell proliferation. Our study suggests that miR-34a-5p targets MACF1 gene as a part of the wnt signaling pathway leading to the involvement in the molecular mechanisms of CRC development and progression.

scholarly journals ORMDL1 is upregulated and associated with favorable outcome in colorectal cancer

2020 ◽  
Author(s):  
Qian Wang ◽  
Wanjun Liu ◽  
Si Chen ◽  
Qianxin Luo ◽  
Yichen Li ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Colony Formation ◽  
Transmembrane Protein ◽  
Cohort Analysis ◽  
Negative Regulator ◽  
Morphologic Change ◽  
Mesenchymal Transition

AbstractBackgroundORMDL1 gene encodes a transmembrane protein for endoplasmic reticulum and is known as crucial negative regulator for sphingolipid biogenesis. However, it has been rarely studied in tumor-related context. Therefore, its prognostic value and functional significance in colorectal cancer (CRC) remain to be explored.MethodsTCGA CRC cohort analysis, qRT-PCR, and immunohistochemistry (IHC) were used to examine the ORMDL1 expression level. The association between ORMDL1 expression and various clinical characteristics were analyzed by Chi-square tests. CRC patients’ overall survival (OS) was analyzed by Kaplan-Meier analysis. In vitro and in vivo cell-based assays were performed to explore the role of ORMDL1 in cell proliferation, invasion and migration. Transcriptional changes of cells either with ORMDL1 knockdowned or overexpressed were compared and analyzed.ResultsORMDL1 was upregulated in CRC tissues either in TCGA cohort or in our cohort. Interestingly, its expression was significantly lower in patients with metastasis compared to patients without metastasis, and high expression group had longer OS than low expression group. Knockdown of ORMDL1 expression can promote proliferation, colony formation and invasion, while attenuate migration in CRC cell lines. In opposite, forced overexpression of ORMDL1 reduced cell proliferation, colony formation and invasion, while enhanced cell migration. Epithelial-to-mesenchymal transition (EMT) related genes were enriched among differentially expressed genes when ORMDL1 was knockdowned in cells, which was consistent with morphologic change by microscopy observation. Finally, stable knockdown of ORMDL1 can promote cancer cell proliferation in vivo to some extent.ConclusionORMDL1 is upregulated and may serve as biomarker to predict favourable outcome in colorectal cancer.

scholarly journals Baicalein, a Natural Anti-Cancer Compound, Alters MicroRNA Expression Profiles in Bel-7402 Human Hepatocellular Carcinoma Cells

2017 ◽  
Vol 41 (4) ◽  
pp. 1519-1531 ◽  
Author(s):  
Beibei Bie ◽  
Jin Sun ◽  
Jun Li ◽  
Ying Guo ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Cycle ◽  
Cell Proliferation ◽  
Cell Lines ◽  
Mirna Expression ◽  
Expression Profiles ◽  
Akt Pathway ◽  
Qrt Pcr ◽  
Cycle Arrest ◽  
Mirna Expression Profiles

Background/Aims: Baicalein has been shown to possess significant anti-hepatoma activity by inhibiting cell proliferation. Whether the anti-proliferative effect of baicalein is related to its modulation of miRNA expression in hepatocellular carcinoma (HCC) is still unknown. Methods: The anti-proliferative effects of baicalein on HCC cell line Bel-7402 was assessed by detecting the proliferation activity, cell cycle distribution, expression changes of p21/CDKN1A, P27/CDKN1B, total Akt and phosphoryted AKT. Microarray analysis was conducted to determine the miRNA expression profiles in baicalein-treated or untreated Bel-7402 cells and then validated by qRT-PCR in two HCC cell lines (Bel-7402 and Hep3B). The gain-of-function of miR-3127-5p was performed by detecting anti-proliferative effects after transfecting miRNA mimics in cells. Finally, the expression level of miR-3127-5p in different HCC cell lines was determined by qRT-PCR. Results: Baicalein was able to inhibit the proliferation of Bel-7402 cells by inducing cell cycle arrest at the S and G2/M phase via up-regulating the expression of p21/CDKN1A and P27/CDKN1B and suppressing the PI3K/Akt pathway. Baicalein could alter the miRNA expression profiles in Bel-7402 cells. Putative target genes for differentially expressed miRNAs could be enriched in terms of cell proliferation regulation, cell cycle arrest and were mainly involved in MAPK, PI3K-Akt, Wnt, Hippo and mTOR signaling pathways. MiR- 3127-5p, one of up-regulated miRNAs, exhibits low expression level in several HCC cell lines and its overexpression could inhibit cell growth of Bel-7402 and Hep3B cell lines by inducing S phase arrest by up-regulating the expression of p21and P27 and repressing the PI3K/Akt pathway. Conclusions: Modulation of miRNA expression may be an important mechanism underlying the anti-hepatoma effects of baicalein.

scholarly journals Polymethoxylated Flavones Target Cancer Stemness and Improve the Antiproliferative Effect of 5-Fluorouracil in a 3D Cell Model of Colorectal Cancer

Nutrients ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 326 ◽  
Author(s):  
Carolina Pereira ◽  
Marlene Duarte ◽  
Patrícia Silva ◽  
Andreia Bento da Silva ◽  
Catarina Duarte ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Colony Formation ◽  
Cell Model ◽  
Ht29 Cell ◽  
Cancer Stemness ◽  
Self Renewal ◽  
Cell Spheroids ◽  
Polymethoxylated Flavones ◽  
The Impact

Polymethoxylated flavones (PMFs) from citrus fruits are reported to present anticancer potential. However, there is a lack of information regarding their effect on cancer stem cell (CSC) populations, which has been recognized as responsible for tumor initiation, relapse, and chemoresistance. In this study, we evaluated the effect of an orange peel extract (OPE) and its main PMFs, namely, nobiletin, sinensetin, tangeretin, and scutellarein tetramethylether in targeting cell proliferation and stemness using a 3D cell model of colorectal cancer composed of HT29 cell spheroids cultured for 7 days in stirred conditions. Soft agar assay, ALDH1 activity, and relative quantitative gene expression analysis of specific biomarkers were carried out to characterize the stemness, self-renewal, and mesenchymal features of HT29 cell spheroids. Then, the impact of OPE and PMFs in reducing cell proliferation and modulating cancer stemness and self-renewal was assessed. Results showed that, when compared with monolayer cultures, HT29 cell spheroids presented higher ALDH1 activity (81.97% ± 5.27% compared to 63.55% ± 17.49% for 2D), upregulation of CD44, PROM1, SOX9, and SNAI1 genes (1.83 ± 0.34, 2.54 ± 0.51, 2.03 ± 0.15, and 6.12 ± 1.59 times) and high self-renewal capability (352 ± 55 colonies compared to 253 ± 42 for 2D). Incubation with OPE (1 mg/mL) significantly inhibited cell proliferation and modulated cancer stemness and self-renewal ability: colony formation, ALDH1 activity, and the expression of cancer stemness biomarkers PROM1 and LGR5 were significantly reduced (0.66 ± 0.15 and 0.51 ± 0.14 times, respectively). Among all PMFs, tangeretin was the most efficient in targeting the CSC population by decreasing colony formation and the expression of PROM1 and LGR5. Scutellarein tetramethylether was shown to modulate markers of mesenchymal/metastatic transition (increasing CDH1 and reducing ZEB1 and SNAI1) and nobiletin was capable of downregulating PROM1 and SNAI1 expression. Importantly, all PMFs and OPE were shown to synergistically interact with 5-fluorouracil, improving the antiproliferative response of this drug.

scholarly journals Grape Pomace Inhibits Colon Carcinogenesis by Suppressing Cell Proliferation and Inducing Epigenetic Modifications in an AOM/DSS Mouse Model

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 358-358
Author(s):  
Qiyu Tian ◽  
Xhixin Xu ◽  
Xiaofei Sun ◽  
Jeanene Deavila ◽  
Min Du ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Wnt Signaling ◽  
Activity Index ◽  
Control Diet ◽  
Disease Activity Index ◽  
Experimental Period ◽  
Dna Demethylation ◽  
Grape Pomace ◽  
Protective Effects

Abstract Objectives Grape pomace (GP), a by-product of the wine and juice industry, is rich in bioflavonoids and dietary fibers. We hypothesized that grape pomace has protective effects against colitis-associated colorectal cancer (CRC). Methods Nine-week-old female mice were fed a control diet (CON) or CON with 5% grape pomace (GP) for 2 weeks, when mice were subjected to azoxymethane (AOM)/dextran sulfate sodium (DSS) for colorectal cancer (CRC) induction. All animals were received 1% DSS in drinking water for 7 days followed by a 21-day recovery in a 3-cycle experimental period, while receiving their respective diet. Results GP supplementation ameliorated the disease activity index (DAI) score, reduced tumor number, tumor size and pathological scores in AOM/DSS treated mice. Furthermore, dietary GP suppressed colonic expression of inflammatory cytokines, IL-1β and TNF-α, and inhibited NF-κB inflammatory signaling. Colorectal inflammation is known to enhance Wnt signaling and cell proliferation. In agreement, the content of β-catenin, a key downstream mediator of Wnt signaling, was reduced so for the expression of Cyclin D1 phosphorylation and content of p53 and PCNA level in GP-fed mice.  In addition, GP reduced the expression of ALDH1, a marker of cell stemness, and increased the expression of Cdx2, a key transcription factor initiating epithelial cell differentiation. Consistently, DNA methylation of the promoter region of Cdx2 gene and hypermethylation of GpG island methylator phenotype (CIMP), which commonly occurs during CRC carcinogenesis, was alleviated in GP group. Conclusions GP supplementation suppressed colitis-associated CRC carcinogenesis associated with the suppression of inflammation and cell proliferation and the enhancement of DNA demethylation in Cdx2 and CIMP genes in the colon. Funding Sources USDA-NIFA 2018–67,017-27,517.

scholarly journals FOXE1 represses cell proliferation and Warburg effect by inhibiting HK2 in colorectal cancer

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Weixing Dai ◽  
Xianke Meng ◽  
Shaobo Mo ◽  
Wenqiang Xiang ◽  
Ye Xu ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Poor Prognosis ◽  
Aerobic Glycolysis ◽  
Lactate Production ◽  
Glucose Consumption ◽  
Underlying Mechanism ◽  
Low Expression

Abstract Background Low expression of FOXE1, a member of Forkhead box (FOX) transcription factor family that plays vital roles in cancers, contributes to poor prognosis of colorectal cancer (CRC) patients. However, the underlying mechanism remains unclear. Materials and methods The effects of FOXE1 on the growth of colon cancer cells and the expression of glycolytic enzymes were investigated in vitro and in vivo. Molecular biological experiments were used to reveal the underlying mechanisms of altered aerobic glycolysis. CRC tissue specimens were used to determine the clinical association of ectopic metabolism caused by dysregulated FOXE1. Results FOXE1 is highly expressed in normal colon tissues compared with cancer tissues and low expression of FOXE1 is significantly associated with poor prognosis of CRC patients. Silencing FOXE1 in CRC cell lines dramatically enhanced cell proliferation and colony formation and promoted glucose consumption and lactate production, while enforced expression of FOXE1 manifested the opposite effects. Mechanistically, FOXE1 bound directly to the promoter region of HK2 and negatively regulated its transcription. Furthermore, the expression of FOXE1 in CRC tissues was negatively correlated with that of HK2. Conclusion FOXE1 functions as a critical tumor suppressor in regulating tumor growth and glycolysis via suppressing HK2 in CRC.

Satb2 expression in Foxc1-promoted osteogenic differentiation of MC3T3-E1 cells is negatively regulated by microRNA-103-3p

2019 ◽  
Vol 51 (6) ◽  
pp. 588-597 ◽  
Author(s):  
Hongzhou Shen ◽  
Chenpei Lu ◽  
Jun Shi ◽  
Hongliang Li ◽  
Jiawen Si ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Osteogenic Differentiation ◽  
Cell Fate ◽  
Mirna Expression ◽  
Early Stage ◽  
Expression Profiles ◽  
Negative Regulator ◽  
Cranial Bone ◽  
Luciferase Assay ◽  
Forkhead Transcription Factor

AbstractThe forkhead transcription factor C1 (Foxc1) is a cell-fate-determining factor that controls cranial bone development and osteogenic differentiation. Previously, it was demonstrated that various microRNAs (miRNAs) play important roles in osteogenesis and regulate the complex process of osteogenic differentiation. However, it remains unclear how miRNA expression changes during Foxc1-promoted osteogenic differentiation. In this study, we successfully overexpressed the Foxc1 gene in MC3T3-E1 cells and investigated the alterations in the miRNA expression profile on day 3 after osteogenic induction by using a miRNA microarray. Nine downregulated miRNAs and eight upregulated miRNAs were found to be differentially expressed. Among these miRNAs, miR-103-3p was consistently downregulated in the Foxc1-overexpressing MC3T3-E1 cells and was identified as a negative regulator of osteogenic differentiation by using a gain- and lose-of-function assay. The special AT-rich sequence-binding protein 2 (Satb2), a pivotal osteogenic transcription factor, was identified as the miR-103-3p targeting gene and was verified by real-time polymerase chain reaction, western blot analysis, and luciferase assay. Overexpression of miR-103-3p markedly inhibited the expression of Satb2 and attenuated Foxc1-promoted osteogenic differentiation. Taken together, our results elucidated the miRNA expression profiles of MC3T3-E1 cells in the early stage of Foxc1-promoted osteogenic differentiation and suggested that miR-103-3p acts as a negative regulator of the osteogenic differentiation of MC3T3-E1 cells by directly targeting Satb2.

Analysis of Microvesicle Microrna Expression Profiles and Their Functional Roles in ALL Subtypes

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 1488-1488
Author(s):  
Xiaomei Chen ◽  
Wei Xiong ◽  
Xiangjun Chen ◽  
Cong Lu ◽  
Fang Liu ◽  
...  
Keyword(s):  
Cell Line ◽  
Mirna Expression ◽  
Target Genes ◽  
Expression Profiles ◽  
Jurkat Cells ◽  
Negative Regulator ◽  
Altered Expression ◽  
Normal Peripheral Blood ◽  
Potential Target ◽  
Mirna Expression Profiles

Abstract Abstract 1488 Microvesicles (MVs) released by leukemia cells constitute an important part of the leukemia microenvironment. As a cell-to-cell communication tool, MVs transfer microRNA(miRNA) between cells. MVs miRNAs may be valuable not only as a diagnostic tool but may also provide an insight in the role of miRNAs playing in the underlying of pathophysiologic processes of various leukemia. It is worth evaluating whether MVs possess some unique miRNA content depending on their corresponding leukemia origin that could be applicable in diagnosis. Hence, we determined the miRNA expression profiles of ALL-derived MVs using Agilent miRNA microarray analysis. The five miRNAs obtained by microarray profiling were validated using real-time PCR. The putative target genes were predicted by bioformation software. Here, we provided MVs miRNA patterns derived from the healthy controls, B-ALL cell line Nalm 6 cells and T-ALL cell line Jurkat cells. We identified 182 dysregulated miRNAs in MVs derived from Nalm 6 cells as compared with MVs from normal controls (P<0.05); both up regulated(123/182) and down regulated(59/182) expressions were observed. Likewise 166 miRNAs were significantly differentially expressed in MVs derived from Jurkat cells versus MVs from normal peripheral blood (P<0.05), 114 miRNAs of which (114/166) were up expression and 52 miRNAs (52/166) were down expression. We also fould that 44 miRNAs were only detected in B-ALL-derived MVs. MiR-1290, miR-1246, miR-1268, miR-1226, and miR-424 were top 5 expressed in Nalm 6 derived MVs, suggesting that those miRNAs may play an important role in B-ALL. We observed that 16 miRNAs detected only in T cell derived MVs. MiR-96 is up regulated in MVs from T-ALL cells but not expressed in B-ALL. Specific and functional target sites for miR-96, exist in the 3'-UTR of the miRNA that encodes the putative tumor suppressor transcription factor FOXO1. The expression signatures of miR-96 could discriminate B-ALL from T-ALL. In contrast, the MVs from B-ALL cell line, shared 100 miRNAs with MVs from T-ALL cell line, suggestting that those miRNAs play roles in both B-and T-ALL. Of 100 miRNAs, 99 miRNAs were high expression, indicating that miRNAs were active in ALL. This obsearvation suggusted that miRNA differential expression in MVs were partially significantly related to subtypes of acute lymphoblastic leukemia. Intriguing is that miR1290 is top higher expression both in MVs derived from Nalm6 cells and from Jurkat cells; miR-1290 is 475-fold higher expressed in Nalm 6 derived MVs versus MVs from normal cells, whereas this miRNA is 245-fold higher expressed in Jurkat cells. Five of these miRNAs were selected to be further assayed and validated by PCR. The qRT-PCR results correlated well with the microarray data. In addition, we found seven miRNAs(miR-148b, miR-484, miR-let-7f, let-7a, miR-223, miR16 and miR-27b) were located near the 11q23 chromosomal region. With bioinformatic tools (TargetScan), we predicted potential target genes for those miRNAs that exhibited altered expression in MVs from B-ALL and T-ALL. The p85 subunit of phosphatidylinositol 3-kinase (PI3-K) was found to be a potential target of miR-320. Of particular interest, we found that protein tyrosine phosphatase-like member b (PTPLB) may be a potential target of miR-1290. The 474-fold increase in miR-1290 in MVs from Nalm 6 cells, indicating that miR-1290 may participate in the modulation of leukemia by targeting PTPLB, a specific, negative regulator of p210 bcr-abl signal. In conclusion, we identified miRNAs and found that miRNA expression profiles were ALL subtype-specific. Altered miRNA expression levels may lead to an inappropriate expression of target oncoproteins or target tumor suppressors, thereby facilitating the development of leukemia. These findings expanded the potential diagnostic markers of leukemia and provided useful information to ALL pathogenesis. Disclosures: No relevant conflicts of interest to declare.

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