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New perspectives in different gene expression profiles for early and locally advanced non-small cell lung cancer stem cells.

ABSTRACT: New perspectives in different gene expression profiles for early and locally advanced non-small cell lung cancer stem cells.

PROVIDER: PRJNA661278 | ENA |

REPOSITORIES: ENA

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New perspectives in different gene expression profiles for early and locally advanced non-small cell lung cancer stem cells.

Project description:No effective treatments against lung cancer for early or advanced stages have been found. Our aim is to assess whether cancer stem cells (CSC) do show over expression of genes, which were previously identified for adenocarcinoma recurrence, in patients with early and locally advanced non-small cell lung cancer (NSCLC) stages.

2021-03-29 | GSE157427 | GEO

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New Perspectives in Different Gene Expression Profiles for Early and Locally Advanced Non-Small Cell Lung Cancer Stem Cells.

Project description:IntroductionLung cancer is one of the most common cancers in the world, causing over 1.7 million deaths in 2018. Thus far, no effective treatments against lung cancer for advanced stages have been found. For early stages, although surgery is considered the gold standard treatment, 30-55% of patients develop recurrence within the first 5 years of surgery. Our aim is to assess whether cancer stem cells (CSC) display overexpression of a pool of genes that were previously identified for adenocarcinoma recurrence in patients with early and locally advanced stages of non-small cell lung cancer (NSCLC).MethodsThis cross-sectional study was carried out by harvesting surgical tumor specimens obtained from patients harboring early (I-II) and locally advanced (IIIA) stages of NSCLC. For each patient, cell sorting was performed to identify and isolate the ALDHhigh (CSC) and ALDHlow (cancer cells) populations. The mRNA expressions of 31 recurrence-related genes (target genes) in both ALDHhigh and ALDHlow populations were then assessed and compared.ResultsSurgical specimens were obtained from 22 patients harboring NSCLC. Sixteen (51.6%) out of 31 recurrence-related genes were significantly overexpressed in ALDHhigh cells in the early stages and 9 (29.0%) were overexpressed in the locally advanced stages of NSCLC. Overall, the relative mRNA expressions for these recurrence-related genes were higher in early-stage patients. The average fold change, considering all 31 recurrence-related genes together, was 4.5 (95% CI = 3.1-6.3) in early-stage patients and 1.6 (95% CI = 1.2-2.2) in locally advanced-stage patients.ConclusionsOur study represents the first attempt toward identifying genes associated with recurrence that are overexpressed in cancer stem cells in patients with early and locally advanced stages of NSCLC. This finding may contribute to the identification of new target therapies tailored for NSCLC stages.

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Gene Expression Profiles Associated with Radio-Responsiveness in Locally Advanced Rectal Cancer

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