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Zuo Q, Xu Q, Li Z, Luo D, Peng H, Duan Z. Kruppel-like factor 5 enhances proliferation, lipid droplet formation and oxaliplatin resistance in colorectal cancer by promoting fatty acid binding protein 6 transcription. Anticancer Drugs 2023; 34:1171-1182. [PMID: 37067981 DOI: 10.1097/cad.0000000000001515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Oxaliplatin (OXA) is a standard agent for colorectal cancer (CRC) adjuvant chemotherapy. However, acquired and intrinsic OXA resistance is a primary challenge for CRC treatment. This study investigates the function of the Kruppel-like factor 5/fatty acid binding proteins 6 (KLF5/FABP6) axis in CRC proliferation, lipid droplet formation and OXA resistance. OXA-resistant CRC cell lines were constructed, and FABP6 and KLF5 expression was assessed in parental and OXA-resistant CRC cells. Subsequent to gain- and loss-of-function experiments, CRC cell proliferation was assessed by cell counting kit-8 (CCK-8) and clone formation assays, the intracellular lipid synthesis by oil red O staining and the protein expression of lipid metabolism genes by western blot. OXA resistance of CRC cells was assessed by CCK-8 assay. The binding of KLF5 to FABP6 was analyzed by the dual-luciferase reporter and ChIP assays. A tumorigenicity assay in nude mice was adopted to examine the impact of KLF5 on CRC tumor growth and OXA resistance in vivo . FABP6 and KLF5 expression was high in CRC cell lines. Downregulation of FABP6 or KLF5 restrained CRC cell proliferation and lipid droplet formation in vitro . FABP6 and KLF5 expression was elevated in OXA-resistant CRC cells. Downregulation of FABP6 or KLF5 repressed the OXA resistance of OXA-resistant CRC cells. Mechanistically, KLF5 facilitated the transcription of FABP6. FABP6 overexpression counteracted the suppressive effects of KLF5 downregulation on CRC cell growth, lipid droplet formation and OXA resistance. KLF5 downregulation restrained CRC tumor growth and OXA resistance in vivo . In conclusion, KLF5 knockdown reduced FABP6 transcription to protect against proliferation, lipid droplet formation and OXA resistance in CRC.
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Affiliation(s)
| | - Qimei Xu
- Department of Pathology, The First Hospital of Changsha, Changsha, Hunan
| | - Zhen Li
- Department of Pathology, The First Hospital of Changsha, Changsha, Hunan
| | - Dixian Luo
- Department of Laboratory Medicine, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, Guangdong 518052, People's Republic of China
| | | | - Zhi Duan
- Department of Pathology, The First Hospital of Changsha, Changsha, Hunan
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Sun L, Wu Z, Dong C, Yu S, Huang H, Chen Z, Wu Z, Yin X. Signature construction and molecular subtype identification based on immune-related genes for better prediction of prognosis in hepatocellular carcinoma. BMC Med Genomics 2023; 16:130. [PMID: 37316840 DOI: 10.1186/s12920-023-01558-z] [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: 05/08/2022] [Accepted: 05/23/2023] [Indexed: 06/16/2023] Open
Abstract
OBJECTIVE Hepatocellular carcinoma (HCC) immunotherapy is a focus of current research. We established a model that can effectively predict the prognosis and efficacy of HCC immunotherapy by analyzing the immune genes of HCC. METHODS Through the data mining of hepatocellular carcinoma in The Cancer Genome Atlas (TCGA), the immune genes with differences in tumor and normal tissues are screened, and then the univariate regression analysis is carried out to screen the immune genes with differences related to prognosis. The prognosis model of immune related genes is constructed by using the minimum absolute contraction and selection operator (lasso) Cox regression model in the TCGA training set data, The risk score of each sample was calculated, and the survival was compared with the Kaplan Meier curve and the receiver operating characteristic (ROC) curve to evaluate the predictive ability. Data sets from ICGC and TCGA were used to verify the reliability of signatures. The correlation between clinicopathological features, immune infiltration, immune escape and risk score was analyzed. RESULTS Seven immune genes were finally determined as the prognostic model of liver cancer. According to these 7 genes, the samples were divided into the high and low risk groups, and the results suggested that the high-risk group had a poorer prognosis, lower risk of immune escape, and better immunotherapy effect. In addition, the expression of TP53 and MSI was positively correlated in the high-risk group. Consensus clustering was performed to identify two main molecular subtypes (named clusters 1 and 2) based on the signature. It was found that compared with cluster 1, better survival outcome was observed in cluster 2. CONCLUSION Signature construction and molecular subtype identification of immune-related genes could be used to predict the prognosis of HCC, which may provide a specific reference for the development of novel biomarkers for HCC immunotherapy.
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Affiliation(s)
- Liang Sun
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhengyi Wu
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Cairong Dong
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shian Yu
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - He Huang
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhendong Chen
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhipeng Wu
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xiangbao Yin
- Department of Hepatobiliary Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, China.
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Tian X, Yan T, Liu F, Liu Q, Zhao J, Xiong H, Jiang S. Link of sorafenib resistance with the tumor microenvironment in hepatocellular carcinoma: Mechanistic insights. Front Pharmacol 2022; 13:991052. [PMID: 36071839 PMCID: PMC9441942 DOI: 10.3389/fphar.2022.991052] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 07/25/2022] [Indexed: 11/26/2022] Open
Abstract
Sorafenib, a multi-kinase inhibitor with antiangiogenic, antiproliferative, and proapoptotic properties, is the first-line treatment for patients with late-stage hepatocellular carcinoma (HCC). However, the therapeutic effect remains limited due to sorafenib resistance. Only about 30% of HCC patients respond well to the treatment, and the resistance almost inevitably happens within 6 months. Thus, it is critical to elucidate the underlying mechanisms and identify effective approaches to improve the therapeutic outcome. According to recent studies, tumor microenvironment (TME) and immune escape play critical roles in tumor occurrence, metastasis and anti-cancer drug resistance. The relevant mechanisms were focusing on hypoxia, tumor-associated immune-suppressive cells, and immunosuppressive molecules. In this review, we focus on sorafenib resistance and its relationship with liver cancer immune microenvironment, highlighting the importance of breaking sorafenib resistance in HCC.
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Affiliation(s)
- Xinchen Tian
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Tinghao Yan
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Fen Liu
- Clinical Medical Laboratory Center, Jining First People’s Hospital, Jining Medical University, Jining, China
| | - Qingbin Liu
- Clinical Medical Laboratory Center, Jining First People’s Hospital, Jining Medical University, Jining, China
| | - Jing Zhao
- Clinical Medical Laboratory Center, Jining First People’s Hospital, Jining Medical University, Jining, China
| | - Huabao Xiong
- Institute of Immunology and Molecular Medicine, Basic Medical School, Jining Medical University, Jining, China
- *Correspondence: Huabao Xiong, ; Shulong Jiang,
| | - Shulong Jiang
- Cheeloo College of Medicine, Shandong University, Jinan, China
- Clinical Medical Laboratory Center, Jining First People’s Hospital, Jining Medical University, Jining, China
- *Correspondence: Huabao Xiong, ; Shulong Jiang,
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Geng F, Yang W, Song D, Hou H, Han B, Chen Y, Zhao H. MDIG, a 2‑oxoglutarate‑dependent oxygenase, acts as an oncogene and predicts the prognosis of multiple types of cancer. Int J Oncol 2022; 61:82. [PMID: 35583005 PMCID: PMC9162052 DOI: 10.3892/ijo.2022.5372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 05/09/2022] [Indexed: 11/05/2022] Open
Abstract
Recent studies have indicated that mineral dust‑induced gene (MDIG) is an oncogene induced by environmental factors, which has a key role in the development and progression of various tumor types, through epigenetic modifications; however, there are no previous pan‑cancer analyses of MDIG. In the present study, a comprehensive pan‑cancer analysis of MDIG was performed using public databases. The results demonstrated that MDIG was upregulated in tumor tissue samples compared with normal tissue, that it was present in all cancer cell lines and it was closely associated with the prognosis of patients with different tumor types. Furthermore, MDIG expression was closely associated with the immunological characteristics of the tumor microenvironment (TME), such as the frequency of tumor‑infiltrating immune cells, TME‑relevant signatures, immunostimulatory genes, immune checkpoint genes, chemokine receptor genes, tumor mutational burden and microsatellite instability. In parallel, high expression of MDIG was associated with improved overall survival of patients and this was verified in a cohort of patients who had received anti‑programmed cell death 1 ligand 1 treatment. Furthermore, high expression of MDIG led to multiple drug resistance in The Cancer Genome Atlas‑lung adenocarcinoma cohort. In addition, gene set variant analysis and gene set enrichment analysis indicated that MDIG was involved in cell cycle regulation. In vitro experiments suggested that MDIG promoted cell proliferation through the mTOR complex 2/Akt and pyruvate dehydrogenase kinase 1/Akt signaling pathways. In summary, the present study suggests that MDIG may be a prognostic biomarker and therapeutic target for various cancer types.
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Affiliation(s)
- Feng Geng
- Department of Pulmonary and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Wei Yang
- Department of Pulmonary and Critical Care Medicine, General Hospital of Northern Theatre Command, Shenyang, Liaoning 110001, P.R. China
| | - Dandan Song
- Department of Pulmonary and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Haijia Hou
- Department of Pulmonary and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Bing Han
- Department of Pulmonary and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yecheng Chen
- Department of Pulmonary and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Hongwen Zhao
- Department of Pulmonary and Critical Care Medicine, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Zhang H, Liu Y, Hu D, Liu S. Identification of Novel Molecular Therapeutic Targets and Their Potential Prognostic Biomarkers Based on Cytolytic Activity in Skin Cutaneous Melanoma. Front Oncol 2022; 12:844666. [PMID: 35345444 PMCID: PMC8957259 DOI: 10.3389/fonc.2022.844666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 02/09/2022] [Indexed: 12/13/2022] Open
Abstract
Skin cutaneous melanoma (SKCM) attracts attention worldwide for its extremely high malignancy. A novel term cytolytic activity (CYT) has been introduced as a potential immunotherapy biomarker associated with counter-regulatory immune responses and enhanced prognosis in tumors. In this study, we extracted all datasets of SKCM patients, namely, RNA sequencing data and clinical information from The Cancer Genome Atlas (TCGA) database and the Gene Expression Omnibus (GEO) database, conducted differential expression analysis to yield 864 differentially expressed genes (DEGs) characteristic of CYT and used non-negative matrix factorization (NMF) method to classify molecular subtypes of SKCM patients. Among all genes, 14 hub genes closely related to prognosis for SKCM were finally screen out. Based on these genes, we constructed a 14-gene prognostic risk model and its robustness and strong predictive performance were further validated. Subsequently, the underlying mechanisms in tumor pathogenesis and prognosis have been defined from a number of perspectives, namely, tumor mutation burden (TMB), copy number variation (CNV), tumor microenvironment (TME), infiltrating immune cells, gene set enrichment analysis (GSEA) and immune checkpoint inhibitors (ICIs). Furthermore, combined with GTEx database and HPA database, the expression of genes in the model was verified at the transcriptional level and protein level, and the relative importance of genes in the model was described by random forest algorithm. In addition, the model was used to predict the difference in sensitivity of SKCM patients to chemotherapy and immunotherapy. Finally, a nomogram was constructed to better aid clinical diagnosis.
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Affiliation(s)
- Haoxue Zhang
- Department of Dermatovenerology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Dermatology, Ministry of Education, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
| | - Yuyao Liu
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Delin Hu
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shengxiu Liu
- Department of Dermatovenerology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Dermatology, Ministry of Education, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, China
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KIF26B in the Prognosis and Immune Biomarking of Various Cancers: A Pan-Cancer Study. JOURNAL OF ONCOLOGY 2022; 2022:4829697. [PMID: 35359341 PMCID: PMC8964195 DOI: 10.1155/2022/4829697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 01/08/2022] [Accepted: 01/12/2022] [Indexed: 11/26/2022]
Abstract
KIF26B has been identified as an oncogene in several tumors; however, its utility as a prognostic indicator for various cancers has not yet been comprehensively evaluated. Here, we first examined how KIF26B intervenes in thirty-three cancers within the TCGA database, including potential immunological functions, and how it affects the prognosis. Based on the open databases TCGA, TIMER2, GEPIA2, GTEx, CPTAC, and HPA, we found that, when compared with normal tissues, KIF26B is overexpressed in 22 tumor tissues. Following a survival analysis, a relationship between the expression of KIF26B and the prognosis of various cancers was observed. Among the genetic alterations assessed, mutations were the most frequent. On the contrary, high phosphorylation levels of S977 were detected in breast cancer, KIRC, LUAD, and UCEC. We also found positive or negative correlations between KIF26B and the immune infiltration of endothelial cells and cancer-associated fibroblast infiltration. This could imply that patients may benefit from immunotherapy. Finally, KEGG pathways and GO enrichment analyses were implemented to identify the molecular mechanisms of KIF26B. This study illustrates the function of KIF26B from a pan-cancer perspective and offers a new horizon for cancer prognostic and immunotherapeutic investigations.
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