PTBP3 Modulates of P53 Expression and Promotes Colorectal Cancer Cell Proliferation by Maintaining UBE4A mRNA Stability

2021 ◽  
Author(s):  
Canbin Xie ◽  
Liang Li ◽  
Xiaorong Li ◽  
Min Ma ◽  
Fei Long ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Cell Lines ◽  
Molecular Mechanisms ◽  
Rna Binding ◽  
Binding Protein ◽  
Critical Role ◽  
Cell Counting ◽  
P53 Expression ◽  
Polypyrimidine Tract Binding Protein

Abstract Background Colorectal cancer (CRC) is the most common malignancy worldwide and has become the second leading cause of cancer-related death worldwide. The RNA-binding protein polypyrimidine tract-binding protein 3 (PTBP3) was recently reported to play a critical role in multiple cancers, and its molecular mechanisms involve RNA splicing, 3′ end processing and translation. However, the role of PTBP3 in CRC is unclear. Methods We analyzed the expression levels of PTPB3 using The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) datasets and clinical tissues. The effect of PTBP3 on CRC cell proliferation was measured by Cell Counting Kit-8 (CCK-8), colony formation, flow cytometry and tumor xenograft assays. A series of experiments were conducted to reveal the mechanisms by which PTBP3 promotes CRC proliferation. Results We showed that PTBP3 was upregulated in CRC and associated with a poor prognosis. Knockdown of PTBP3 in CRC cell lines restricted CRC proliferative capacities in vitro and in vivo. Mechanistically, we found that PTBP3 regulated the expression of the E3 ubiquitin ligase ubiquitination factor E4A (UBE4A) by binding the 3' untranslated region (UTR) of its mRNA, thereby preventing its degradation. We also discovered that UBE4A participated in the degradation of P53, and knockdown of PTBP3 in CRC cell lines increased P53 expression. Overexpression of UBE4A rescued PTBP3 knockdown-induced inhibition of CRC cell proliferation and P53 expression. Conclusions PTBP3 plays an essential role in CRC cell proliferation by stabilizing UBE4A to regulate P53 expression and may serve as a new prognostic biomarker and effective therapeutic target for CRC.

scholarly journals Circ_0003266 sponges miR-503-5p to suppress colorectal cancer progression via regulating PDCD4 expression

BMC Cancer ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Caihong Wen ◽  
Xiaoqing Feng ◽  
Honggang Yuan ◽  
Yong Gong ◽  
Guangsheng Wang
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Cell Lines ◽  
Cancer Progression ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Circular Rnas ◽  
Pdcd4 Expression ◽  
Novel Target

Abstract Background Circular RNAs (circRNAs) feature prominently in tumor progression. However, the biological function and molecular mechanism of circ_0003266 in colorectal cancer (CRC) require further investigation. Methods Circ_0003266 expression in 46 pairs CRC tissues / adjacent tissues, and CRC cell lines was detected by quantitative real-time polymerase chain reaction (qRT-PCR); after circ_0003266 was overexpressed or knocked down in CRC cells, cell proliferation, apoptosis, migration, and invasion were evaluated by the cell counting kit-8 (CCK-8), flow cytometry, and Transwell assays, respectively; the interaction among circ_0003266, miR-503-5p, and programmed cell death 4 (PDCD4) was confirmed using bioinformatics analysis and dual-luciferase reporter assay; PDCD4 protein expression in CRC cells was quantified using Western blot. Results Circ_0003266 was significantly lowly expressed in CRC tissues and cell lines. Circ_0003266 overexpression markedly repressed CRC cell proliferation, migration, and invasion, and accelerated the cell apoptosis, but its overexpression promoted the malignant phenotypes of CRC cells. PDCD4 was a direct target of miR-503-5p and circ_0003266 promoted PDCD4 expression by competitively sponging miR-503-5p. Conclusion Circ_0003266 suppresses the CRC progression via sponging miR-503-5p and regulating PDCD4 expressions, which suggests that circ_0003266 may serve as a novel target for the treatment of CRC.

scholarly journals Long Noncoding RNA LINC-PINT Suppresses Cell Proliferation, Invasion, and EMT by Blocking Wnt/β-Catenin Signaling in Glioblastoma

2021 ◽  
Vol 11 ◽  
Author(s):  
Hanshuo Zhu ◽  
Zheng Chen ◽  
Lin Shen ◽  
Tianchi Tang ◽  
Min Yang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Cell Lines ◽  
Noncoding Rna ◽  
Molecular Mechanisms ◽  
Biological Function ◽  
The Cancer Genome Atlas ◽  
Cell Counting ◽  
Regulation Mechanism ◽  
Mesenchymal Transition

Background: Glioblastoma (GBM) represents the most aggressive glioma with high invasive potential. Recent studies proved the involvement of epithelial-mesenchymal transition (EMT) process in increasing the malignancy and invasiveness of GBM. LncRNAs have been verified to play pivotal roles in human disease including GBM. However, the molecular mechanisms of lncRNA-mediated EMT in GBM remain largely unknown. LINC-PINT, a LncRNA which has never been studied in GBM before, was predicted to be negatively associated with EMT in GBM. This study aimed to explore the biological function and the EMT relevance of LINC-PINT in GBM and further explore the molecular mechanism.Methods: The bioinformatic prediction data of LINC-PINT in GBM was derived from The Cancer Genome Atlas (TCGA) database by R software and GEPIA website. qRT-PCR assay was performed to detect the expression level of LINC-PINT in GBM cell lines. Cell counting kit-8 (CCK8), clone formation, transwell, and wound healing assays were performed to determine the biological function of LINC-PINT in vivo. Tumor xenograft experiment and tumor peritoneal metastasis experiments were performed to verify the in vivo function. Western blot and immunofluorescence staining assays were carried out to detect the relevance of LINC-PINT with EMT and Wnt/β-catenin signaling. Rescue assays were performed to check the regulation mechanism of LINC-PINT/Wnt signaling/EMT axis in GBM.Results: LINC-PINT was downregulated in GBM cell lines. LINC-PINT suppressed cell progression, invasion, and EMT in GBM. LINC-PINT blocked Wnt/β-catenin signaling in GBM.Conclusion: LINC-PINT suppressed cell proliferation, invasion, and EMT by blocking Wnt/β-catenin signaling in GBM.

scholarly journals Loss of TARBP2 Drives the Progression of Hepatocellular Carcinoma via miR-145-SERPINE1 Axis

2021 ◽  
Vol 11 ◽  
Author(s):  
Li-Man Li ◽  
Chang Chen ◽  
Ruo-Xi Ran ◽  
Jing-Tao Huang ◽  
Hui-Lung Sun ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Lines ◽  
Molecular Mechanisms ◽  
Rna Binding ◽  
Tumor Development ◽  
Plasminogen Activator Inhibitor ◽  
Cell Counting ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Blood Samples

The clinical outcomes of hepatocellular carcinoma (HCC) remain dismal. Elucidating the molecular mechanisms for the progression of aggressive HCC holds the promise for developing novel intervention strategies. The transactivation response element RNA-binding protein (TRBP/TARBP2), a key component of microRNA (miRNA) processing and maturation machinery has been shown to play conflicting roles in tumor development and progression. We sought to investigate the expression of TARBP2 in HCC using well-characterized HCC cell lines, patient-derived tissues and blood samples. Additionally, the potential prognostic and diagnostic value of TARBP2 in HCC were analyzed using Kaplan-Meier plots and ROC curve. Cell counting kit‐8 (CCK‐8), wound healing and transwell assays examined the ability of TARBP2 to induce cell proliferation, migration, and invasion in HCC cell lines. RNA sequencing was applied to identify the downstream elements of TARBP2. The interaction of potential targets of TARBP2, miR‐145 and serpin family E member 1 (SERPINE1), was assessed using luciferase reporter assay. TARBP2 expression was down-regulated in HCC cell lines relative to normal hepatocyte cells, with a similar pattern further confirmed in tissue and blood samples. Notably, the loss of TARBP2 was demonstrated to promote proliferation, migration, and invasion in HCC cell lines. Interestingly, the reduction of TARBP2 was shown to result in the upregulation of SERPINE1, also known as plasminogen activator inhibitor (PAI-1), which is a vital gene of the HIF-1 signaling pathway. Knockdown of SERPINE1 rescued the TARBP2-lost phenotype. Moreover, TARBP2 depletion induced the upregulation of SERPINE1 through reducing the processing of miR-145, which directly targets SERPINE1. Finally, overexpression of miR-145 repressed SERPINE1 and rescued the functions in sh-TARBP2 HCC cells. Our findings underscore a linear TARBP2-miR-145-SERPINE1 pathway that drives HCC progression, with the potential as a novel intervention target for aggressive HCC.

scholarly journals TRIM22 activates NF-κB signaling in glioblastoma by accelerating the degradation of IκBα

2020 ◽  
Vol 28 (1) ◽  
pp. 367-381
Author(s):  
Jianxiong Ji ◽  
Kaikai Ding ◽  
Tao Luo ◽  
Xin Zhang ◽  
Anjing Chen ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Cell Lines ◽  
Active Sites ◽  
Molecular Mechanisms ◽  
Critical Role ◽  
Xenograft Model ◽  
E3 Ligase ◽  
Negative Regulator ◽  
Luciferase Reporter ◽  
Growth Promoting

AbstractNF-κB signaling plays a critical role in tumor growth and treatment resistance in GBM as in many other cancers. However, the molecular mechanisms underlying high, constitutive NF-κB activity in GBM remains to be elucidated. Here, we screened a panel of tripartite motif (TRIM) family proteins and identified TRIM22 as a potential activator of NF-κB using an NF-κB driven luciferase reporter construct in GBM cell lines. Knockout of TRIM22 using Cas9-sgRNAs led to reduced GBM cell proliferation, while TRIM22 overexpression enhanced proliferation of cell populations, in vitro and in an orthotopic xenograft model. However, two TRIM22 mutants, one with a critical RING-finger domain deletion and the other with amino acid changes at two active sites of RING E3 ligase (C15/18A), were both unable to promote GBM cell proliferation over controls, thus implicating E3 ligase activity in the growth-promoting properties of TRIM22. Co-immunoprecipitations demonstrated that TRIM22 bound a negative regulator of NF-κB, NF-κB inhibitor alpha (IκBα), and accelerated its degradation by inducing K48-linked ubiquitination. TRIM22 also formed a complex with the NF-κB upstream regulator IKKγ and promoted K63-linked ubiquitination, which led to the phosphorylation of both IKKα/β and IκBα. Expression of a non-phosphorylation mutant, srIκBα, inhibited the growth-promoting properties of TRIM22 in GBM cell lines. Finally, TRIM22 was increased in a cohort of primary GBM samples on a tissue microarray, and high expression of TRIM22 correlated with other clinical parameters associated with progressive gliomas, such as wild-type IDH1 status. In summary, our study revealed that TRIM22 activated NF-κB signaling through posttranslational modification of two critical regulators of NF-κB signaling in GBM cells.

scholarly journals The long noncoding RNA LUCAT1 promotes colorectal cancer cell proliferation by antagonizing Nucleolin to regulate MYC expression

2020 ◽  
Vol 11 (10) ◽  
Author(s):  
Runliu Wu ◽  
Liang Li ◽  
Yang Bai ◽  
Bowen Yu ◽  
Canbin Xie ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Long Noncoding Rna ◽  
Noncoding Rna ◽  
Molecular Mechanisms ◽  
Critical Role ◽  
Multiple Cancer ◽  
G Quadruplex

Abstract The long noncoding RNA (lncRNA) LUCAT1 was recently reported to be upregulated and to play an essential role in multiple cancer types, especially colorectal cancer (CRC), but the molecular mechanisms of LUCAT1 in CRC are mostly unreported. Here, a systematic analysis of LUACT1 expression is performed with data from TCGA database and clinic CRC samples. LUCAT1 is identified as a putative oncogene, which is significantly upregulated in CRC and is associated with poor prognosis. Loss of LUCAT1 restricts CRC proliferative capacities in vitro and in vivo. Mechanically, NCL is identified as the protein binding partner of LUCAT1 by using chromatin isolation by RNA purification coupled with mass spectrometry (ChIRP-MS) and RNA immunoprecipitation assays. We also show that NCL directly binds to LUCAT1 via its putative G-quadruplex-forming regions from nucleotides 717 to 746. The interaction between LUCAT1 and NCL interferes NCL-mediated inhibition of MYC and promote the expression of MYC. Cells lacking LUCAT1 show a decreased MYC expression, and NCL knockdown rescue LUCAT1 depletion-induced inhibition of CRC cell proliferation and MYC expression. Our results suggest that LUCAT1 plays a critical role in CRC cell proliferation by inhibiting the function of NCL via its G-quadruplex structure and may serve as a new prognostic biomarker and effective therapeutic target for CRC.

scholarly journals Insulin-Like Growth Factor 2 mRNA-Binding Protein 1 (IGF2BP1) Is a Prognostic Biomarker and Associated with Chemotherapy Responsiveness in Colorectal Cancer

2021 ◽  
Vol 22 (13) ◽  
pp. 6940
Author(s):  
Hung-Ming Chen ◽  
Chun-Chi Lin ◽  
Wei-Shone Chen ◽  
Jeng-Kai Jiang ◽  
Shung-Haur Yang ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Growth Factor ◽  
Cell Lines ◽  
Cancer Metastasis ◽  
Rna Binding ◽  
Binding Protein ◽  
P Value ◽  
Insulin Like Growth Factor ◽  
Mrna Binding Protein ◽  
Mrna Binding

Insulin-like growth factor 2 mRNA-binding protein 1 (IGF2BP1) is an RNA-binding protein and serves as a post-transcriptional fine-tuner regulating the expression of mRNA targets. However, the clinicopathological roles of IGF2BP1 in colorectal cancer (CRC) remains limited. Thus, we aimed to elucidate the clinical significance and biomarker potentials of IGF2BP1 in CRC. A total of 266 specimens from two sets of CRC patients were collected. IGF2BP1 expression was studied by immunohistochemical (IHC) staining. The Kaplan-Meier survival plot and a log-rank test were used for survival analysis. The Cox proportional hazards model was applied to determine the survival impact of IGF2BP1. Public datasets sets from The Cancer Genome Atlas (TCGA) and Human Cancer Metastasis Database (HCMDB), receiver operating characteristic (ROC) plotter, and two CRC cell lines, HCT-116 and DLD-1, were used for validating our findings. We showed that IGF2BP1 was overexpressed in tumor specimens compared to 13 paired normal parts by examining the immunoreactivity of IGF2BP1 (p = 0.045). The increased expression of IGF2BP1 in primary tumor parts was observed regardless of metastatic status (p < 0.001) in HCMDB analysis. IGF2BP1 expression was significantly associated with young age (59.6% vs. 46.7%, p-value = 0.043) and advanced stage (61.3% vs. 40.0%, p-value = 0.001). After controlling for confounding factors, IGF2BP1 remained an independent prognostic factor (HR = 1.705, p-value = 0.005). TCGA datasets analysis indicated that high IGF2BP1 expression showed a lower 5-year survival rate (58% vs. 65%) in CRC patients. The increased expression of IGF2BP1 in chemotherapy non-responder rectal cancer patients was observed using a ROC plotter. Overexpression of IGF2BP1 promoted the colony-forming capacity and 5-fluorouracil and etoposide resistance in CRC cells. Here, IGF2BP1 was an independent poor prognostic marker in CRC patients and contributed to aggressive phenotypes in CRC cell lines.

scholarly journals MicroRNA-140-5p Inhibits the Progression of Colorectal Cancer by Targeting VEGFA

2015 ◽  
Vol 37 (3) ◽  
pp. 1123-1133 ◽  
Author(s):  
Wenbo Zhang ◽  
Chen Zou ◽  
Lei Pan ◽  
Ying Xu ◽  
Weidong Qi ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Cell Lines ◽  
Molecular Mechanisms ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Integrated Analysis ◽  
Loss Of Function ◽  
Invasion And Migration ◽  
Tumorigenesis And Progression

Background: microRNAs (miRNAs) are small non-coding RNAs and have been shown to play a crucial role in the colorectal cancer (CRC) tumorigenesis and progression. The aim of this study was to investigate the clinical significance and prognostic value of miR-140-5p in CRC. The exact functions and the underlying molecular mechanisms of miR-140-5p in CRC was further determined. Methods: miR-140-5p expression was detected in CRC samples, their adjacent nontumor tissues as well as CRC cell lines by RT-qPCR. Cell proliferation was detected using CCK-8, and cell invasion and migration were evaluated using Transwell assay. The direct regulation of VEGFA by miR-140-5p was identified using luciferase reporter assay. Results: miR-140-5p was significantly dowregulated in CRC tissues and cell lines. Downregulation of miR-140-5p was significantly correlated with advanced CRC stage and poorer overall survival. Both gain-of-function and loss of function studies demonstrated that miR-140-5p acted as a tumor suppressor by inhibiting cell proliferation, migration and invasion. Integrated analysis identified VEGFA as a direct and functional target gene of miR-140-5p. Silencing VEGFA by small interfering RNA (siRNA) resembled the phenotype resulting from ectopic miR-140-5p expression, while overexpression of VEGFA attenuated the effect of miR-140-5p on CRC cells. Conclusions: Our results suggested a tumor suppressive role of miR-140-5p in CRC tumorigenesis and progression by targeting VEGFA.

scholarly journals RFWD3 Participates in the Occurrence and Development of Colorectal Cancer via E2F1 Transcriptional Regulation of BIRC5

2021 ◽  
Vol 9 ◽  
Author(s):  
Fenghua Xu ◽  
Zhifeng Xiao ◽  
Liqin Fan ◽  
Guangcong Ruan ◽  
Yi Cheng ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Dna Damage ◽  
Transcriptional Regulation ◽  
Critical Role ◽  
Cell Cycle Checkpoint ◽  
The Cancer Genome Atlas ◽  
Cell Counting ◽  
Western Blot Assay

Objectives: Colorectal cancer (CRC) is one of the most common human malignancies. It was reported that the alterations in the DNA damage response (DDR) pathways are emerging as novel targets for treatment across different cancer types including CRC. RFWD3 plays a critical role in replication protein A (RPA)-mediated DNA damage in cancer cells. More importantly, RFWD3 can response to DNA damage by positively regulating p53 stability when the G1 cell cycle checkpoint is activated. However, the functional significance of RFWD3 in CRC has not been reported in the existing documents.Materials and Methods: Here, we revealed high expression of RFWD3 in CRC tissues by IHC analysis and The Cancer Genome Atlas (TCGA) database. Besides, overexpression of RFWD3 in CRC cell lines was also confirmed by qRT-PCR and western blot assay. The Celigo cell counting method and wound-healing/transwell migration assay were applied to evaluate CRC cell proliferation and migration. The tumor growth indicators were quantified in nude mice xenografted with shRFWD3 and shCtrl RKO cells.Results: The results indicated that RFWD3 knockdown restricted CRC development in vitro and in vivo. In exploring the downstream mechanism of RFWD3’s action, we found that RFWD3 could transcriptionally activate BIRC5 by interacting with E2F transcription factor 1 (E2F1). Accordingly, we identified BIRC5 as a downstream gene of RFWD3 regulating CRC. Subsequent loss- and gain- of function experiments demonstrated that upon overexpressing BIRC5 in RKO cells with down-regulated RFWD3, the inhibitory effects of cell proliferation, migration and colony formation could be reversed, while the capacity of cell apoptosis was ameliorated, suggesting that the effects of RFWD3 depletion was mainly due to BIRC5 suppression.Conclusion: Taken together, this study revealed that RFWD3 participates in the occurrence and development of colorectal cancer via E2F1 transcriptional regulation of BIRC5.

scholarly journals RNA-binding protein p54nrb/NONO potentiates nuclear EGFR-mediated tumorigenesis of triple-negative breast cancer

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Mengqin Shen ◽  
Ruixue Zhang ◽  
Wenzhi Jia ◽  
Zongping Zhu ◽  
Li Zhao ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Triple Negative Breast Cancer ◽  
Therapeutic Target ◽  
Molecular Mechanisms ◽  
Triple Negative ◽  
Rna Binding ◽  
Gene Annotation ◽  
Binding Protein ◽  
Critical Role ◽  
Egfr Expression

AbstractNuclear-localized epidermal growth factor receptor (EGFR) highly correlates with the malignant progression and may be a promising therapeutic target for breast cancer. However, molecular mechanisms of nuclear EGFR in triple-negative breast cancer (TNBC) have not been fully elucidated. Here, we performed gene-annotation enrichment analysis for the interactors of nuclear EGFR and found that RNA-binding proteins (RBPs) were closely associated with nuclear EGFR. We further demonstrated p54nrb/NONO, one of the RBPs, significantly interacted with nuclear EGFR. NONO was upregulated in 80 paired TNBC tissues and indicated a poor prognosis. Furthermore, NONO knockout significantly inhibited TNBC proliferation in vitro and in vivo. Mechanistically, NONO increased the stability of nuclear EGFR and recruited CREB binding protein (CBP) and its accompanying E1A binding protein p300, thereby enhancing the transcriptional activity of EGFR. In turn, EGFR positively regulated the affinity of NONO to mRNAs of nuclear EGFR downstream genes. Furthermore, the results indicated that the nuclear EGFR/NONO complex played a critical role in tumorigenesis and chemotherapy resistance. Taken together, our findings indicate that NONO enhances nuclear EGFR-mediated tumorigenesis and may be a potential therapeutic target for TNBC patients with nuclear EGFR expression.

scholarly journals Downregulation of CD44 Inhibits Proliferation, Invasion and Migration of Osteosarcoma Cells by Regulating the Expression of Cathepsin S

2021 ◽  
Author(s):  
Lingwei Kong ◽  
Hairu Ji ◽  
Xintian Gan ◽  
Sheng Cao ◽  
Zhehong Li ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Cell Lines ◽  
Molecular Mechanisms ◽  
Bone Tumour ◽  
Cell Counting ◽  
Migration And Invasion ◽  
Cathepsin S ◽  
Altered Expression ◽  
Small Interference Rna ◽  
U2os Cells

Abstract BackgroundOsteosarcoma (OS) is a malignant bone tumour of mesenchymal origin. These tumours are characterised by rich vascularisation, therefore promoting rapid proliferation and facilitating metastasis. CD44 has been reported to be involved in OS, but its role and molecular mechanisms in the pathogenesis of the disease are not fully determined. MethodsIn this study, we investigated the antitumor effect of CD44 on the development of OS and further explored the molecular mechanisms. The expression of CD44, cathepsin S and MMP-9 was detected by Western blot (WB) and reverse transcription-polymerase chain reaction (RT-qPCR) in different cell lines (MG63, U2OS OS and hFOB 1.19). To elucidate the role of CD44 in OS, MG63 and U2OS cells were treated with small interference RNA (siRNA) to knock down CD44, and the knockdown efficiency was validated with GFP and RT-qPCR. Furthermore, cell proliferation was assayed using Cell Counting Kit‑8 (CCK-8) and colony formation assays, and cell migration and invasion were assayed by transwell and wound-healing assays. ResultsWe found that CD44 expression in the MG63 and U2OS OS cell lines was markedly increased compared to that of the human osteoblast hFOB 1.19 cell line. Knockdown of CD44 inhibited proliferation, migration, and invasion of MG63 and U2OS cells, possibly by regulating the expression of cathepsin S in OS. ConclusionTaken together, our data reinforced the evidence that CD44 knockdown inhibited cell proliferation, migration, and invasion of OS cells accompanied by altered expression of cathepsin S. These findings offer new clues for OS development and progression, suggesting CD44 as a potential therapeutic target for OS.

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