RESUMEN
OBJECTIVE: This study examined the impact of State and Trait anxiety and dietary intake on college students' gastrointestinal symptoms during the COVID-19 pandemic. PARTICIPANTS: A total of 455 students, aged 18-23, from two residential colleges in the midwestern United States participated in the study during April 2021. METHODS: An online questionnaire that included the National Cancer Institute Dietary Screener, State-Trait Inventory for Cognitive and Somatic Anxiety, and an adapted version of the Gastrointestinal Symptoms Questionnaire was used. Stepwise multiple regression analyses and Spearman rho correlation coefficients were used to analyze the data. RESULTS: High rates of State-somatic, State-cognitive, and Trait-somatic anxiety were present in our study population. These anxiety subscales and dietary intake predicted 26% and 3.8% of the GI symptoms variance, respectively. CONCLUSION: State-anxiety and Trait-somatic anxiety are large factors in predicting GI symptoms compared to dietary intake. College students could seek anxiety-reducing techniques to ease GI symptoms.
RESUMEN
The capacity for tumor cells to metastasize efficiently is directly linked to their ability to colonize secondary sites. Here we identify Six2, a developmental transcription factor, as a critical regulator of a breast cancer stem cell program that enables metastatic colonization. In several triple-negative breast cancer (TNBC) models, Six2 enhanced the expression of genes associated with embryonic stem cell programs. Six2 directly bound the Sox2 Srr2 enhancer, promoting Sox2 expression and downstream expression of Nanog, which are both key pluripotency factors. Regulation of Sox2 by Six2 enhanced cancer stem cell properties and increased metastatic colonization. Six2 and Sox2 expression correlated highly in breast cancers including TNBC, where a Six2 expression signature was predictive of metastatic burden and poor clinical outcome. Our findings demonstrate that a SIX2/SOX2 axis is required for efficient metastatic colonization, underscoring a key role for stemness factors in outgrowth at secondary sites. SIGNIFICANCE: These findings provide novel mechanistic insight into stemness and the metastatic outgrowth of triple-negative breast cancer cells.Graphical Abstract: http://cancerres.aacrjournals.org/content/canres/79/4/720/F1.large.jpg.