Smad7 Enhances TGFβ-Induced Transcription of  &lt;i&gt;c-Jun&lt;/i&gt; and  &lt;i&gt;HDAC6&lt;/i&gt; Promoting Invasion of Prostate Cancer Cells

Thakur, Noopur; Hamidi, Anahita; Song, Jie; Itoh, Susumu; Bergh, Anders; Heldin, Carl-Henrik; Landström, Marene

doi:10.2139/ssrn.3562439

Cited by 1 publication

(1 citation statement)

References 40 publications

(46 reference statements)

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“…Nevertheless, several studies have pointed out that SMAD7 might promote tumor progression, migration, and invasion. SMAD7 enhanced TGF-β induction of c-Jun and HDAC6 and contributed to tumor aggressiveness in prostate cancer cells ( 41 ). In colorectal cancer, SMAD7 expression was associated with poorly differentiated cell morphology, higher cell proliferation, and liver metastases ( 42 ).…”

Section: Discussionmentioning

confidence: 99%

Identification and Validation of a Four-Gene Ferroptosis Signature for Predicting Overall Survival of Lung Squamous Cell Carcinoma

Wang

Chen²,

Gao

et al. 2022

Front. Oncol.

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BackgroundLung squamous cell carcinoma (LUSC) represents 30% of all non-small cell lung carcinoma. Targeted therapy is not sufficient for LUSC patients because of the low frequency of targeted-effective mutation in LUSC whereas immunotherapy offers more options for patients with LUSC. We explored a ferroptosis-related prognostic signature that can potentially assess the prognosis and immunotherapy efficacy of LUSC patients.MethodsA total of 502 LUSC patients were downloaded from The Cancer Genome Atlas (TCGA). The external validation data were obtained from the Gene Expression Omnibus (GEO): GSE73403. Then, we identified the candidate genes and constructed the prognostic signature through the Cox survival regression analyses and least absolute shrinkage and selection operator (LASSO). Risk score plot, Kaplan–Meier curve, and ROC curve were used to assess the prognostic power and performance of the model. The CIBERSORT algorithm estimated the fraction of immune cell types. TIDE was utilized to predict the response to immunotherapy. IMvigor210 was used to explore the association between the risk scores and immunotherapy outcomes. A nomogram combined selected clinical characteristics, and the risk scores were constructed.ResultsWe screened 132 differentially expressed ferroptosis-related genes. According to KEGG and GO pathway analyses, these genes were mainly engaged in the positive regulation of cytokine production, cytokine metabolic process, and oxidoreductase activity. We then constructed a prognostic model via LASSO regression. The proportions of CD8+ T cells, CD4+ activated T cells, and follicular helper T cells were significantly different between low-risk and high-risk groups. TIDE algorithm indicated that low-risk LUSC patients might profit more from immune checkpoint inhibitors. The predictive value of the ferroptosis gene model in immunotherapy response was further confirmed in IMvigor210. Finally, we combined the clinical characteristics with a LASSO regression model to construct a nomogram that could be easily applied in clinical practice.ConclusionWe identified a prognostic model that provides an accurate and objective basis for guiding individualized treatment decisions for LUSC.

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Section: Discussionmentioning

confidence: 99%