High neighborhood deprivation impacts DNA methylation and gene expression in cancer-related genes (RNA-Seq)
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PROVIDER: PRJNA937709 | ENA |
REPOSITORIES: ENA
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Project description:High neighborhood deprivation impacts DNA methylation and gene expression in cancer-related genes
| PRJNA937706 | ENA
Project description:High neighborhood deprivation impacts DNA methylation and gene expression in cancer-related genes (MethylationEPIC)
| PRJNA937710 | ENA
Project description:Background: Low socioeconomic status (SES) has been linked to chronic stress and poorer health outcomes for marginalized communities in the U.S. The biological processes mediating the impact of SES on health to promote chronic diseases, such as cancer, remain poorly understood. Here, we aim to determine how changes in DNA methylation are linked to neighborhood-level socioeconomic deprivation, thereby promoting cancer initiation and progression through cancer- and immune-related pathways. Methods: We extracted DNA from 402 fresh frozen tissues from 289 women in the NCI-Maryland Breast Cancer Cohort, including 185 tumor samples, 113 additional paired adjacent normal samples, and 104 normal tissues from reduction mammoplasty. Census-tract level socioeconomic deprivation was measured via a Neighborhood Deprivation Index (NDI) using the geocoded addresses from our study participants. DNA methylation values were acquired using the Illumina Infinium MethylationEPIC 850K Beadchip. We conducted a differentially methylated probe (DMP) analysis between tumor and adjacent normal tissue to characterize methylation profiles by NDI status. We also used methylCIBERSORT to estimate immune cell subpopulation differences by tissue type and NDI status. Results: NDI was significantly associated with self-reported race in our cohort in both normal (p<0.0001, 95% CI -4.32, -2.58) and tumor (p<0.0001, 95% CI -4.22, -2.79) tissue. Our DMP analysis showed more significant methylation events (hypo- or hyper- methylation of the tumor tissue compared to adjacent normal tissue) in the NDI high group compared to the NDI low group. We also identified five CpG sites that were significantly hypomethylated in the tumors of the NDI high group, including two tumor suppressor genes, LRIG1 (p=1.99 x10-10) and WWOX (p=6.47 x 10-9). These methylation changes translated to an inverse relationship between gene expression for these tumor suppressor genes and NDI. We also identified significantly lower neutrophils in the NDI high tumors compared to NDI low tumors (p=0.001, 95% CI -0.112, -0.028). Conclusions: Overall, our analysis provides evidence that high neighborhood deprivation can lead to pro-tumorigenic changes in DNA methylation and gene expression that may impact the immune microenvironment, breast cancer progression, and overall survival.
2023-10-15 | GSE225845 | GEO
Project description:Background: Low socioeconomic status (SES) has been linked to chronic stress and poorer health outcomes for marginalized communities in the U.S. The biological processes mediating the impact of SES on health to promote chronic diseases, such as cancer, remain poorly understood. Here, we aim to determine how changes in DNA methylation are linked to neighborhood-level socioeconomic deprivation, thereby promoting cancer initiation and progression through cancer- and immune-related pathways. Methods: We extracted DNA from 402 fresh frozen tissues from 289 women in the NCI-Maryland Breast Cancer Cohort, including 185 tumor samples, 113 additional paired adjacent normal samples, and 104 normal tissues from reduction mammoplasty. Census-tract level socioeconomic deprivation was measured via a Neighborhood Deprivation Index (NDI) using the geocoded addresses from our study participants. DNA methylation values were acquired using the Illumina Infinium MethylationEPIC 850K Beadchip. We conducted a differentially methylated probe (DMP) analysis between tumor and adjacent normal tissue to characterize methylation profiles by NDI status. We also used methylCIBERSORT to estimate immune cell subpopulation differences by tissue type and NDI status. Results: NDI was significantly associated with self-reported race in our cohort in both normal (p<0.0001, 95% CI -4.32, -2.58) and tumor (p<0.0001, 95% CI -4.22, -2.79) tissue. Our DMP analysis showed more significant methylation events (hypo- or hyper- methylation of the tumor tissue compared to adjacent normal tissue) in the NDI high group compared to the NDI low group. We also identified five CpG sites that were significantly hypomethylated in the tumors of the NDI high group, including two tumor suppressor genes, LRIG1 (p=1.99 x10-10) and WWOX (p=6.47 x 10-9). These methylation changes translated to an inverse relationship between gene expression for these tumor suppressor genes and NDI. We also identified significantly lower neutrophils in the NDI high tumors compared to NDI low tumors (p=0.001, 95% CI -0.112, -0.028). Conclusions: Overall, our analysis provides evidence that high neighborhood deprivation can lead to pro-tumorigenic changes in DNA methylation and gene expression that may impact the immune microenvironment, breast cancer progression, and overall survival.
2023-10-13 | GSE225846 | GEO
Project description:This SuperSeries is composed of the SubSeries listed below.
2023-10-15 | GSE225847 | GEO
Project description:Children show stronger cooperative behavior in experimental settings as they get older, but little is known about how the environment of a child shapes this development. In adults, prosocial behavior toward strangers is markedly decreased in low socio-economic status (SES) neighborhoods, suggesting that environmental harshness has a negative impact on some prosocial behaviors. Similar results have been obtained with 9-year-olds recruited from low vs. high SES schools. In the current study, we investigate whether these findings generalize to a younger age group and a developing country. Specifically, we worked with a sample of thirty-nine 6- to 7-year-olds in two neighborhoods in a single city in Romania. Using a "Quality Dictator Game" that offers greater resolution than previous measures, we find that children living in the harsher neighborhood behave less prosocially toward a stranger than children living in the less harsh neighborhood.
| S-EPMC5107739 | biostudies-literature
Project description:Zebrafish her3 knockout impacts developmental and cancer-related gene signatures
| PRJNA807347 | ENA
Project description:Despite lower rates and intensity of smoking, Black men experience a higher incidence of lung cancer compared to White men. The racial disparity in lung cancer is particularly pronounced in Chicago, a highly segregated urban city. Neighborhood conditions, particularly social stress, may play a role in lung tumorigenesis. Preliminary studies indicate that Black men residing in neighborhoods with higher rates of violent crime have significantly higher levels of hair cortisol, an indicator of stress response. To examine the relationship between social stress exposure and gene expression in lung tumors, we investigated glucocorticoid receptor (GR) binding in lung tumor samples in relation to GR target gene expression levels and zip code level residential neighborhood violence. Spatial transcriptomics and a version of ChIP-sequencing known as CUT & RUN were used. GR recruitment to chromatin was correlated with neighborhood violent crime rate and overall GR binding increased with increasing neighborhood violent crime rates. Among patients residing in high-violence neighborhoods, tumor samples, compared to normal neighboring lung tissue, had fewer GR binding sites. The opposite was seen in patients residing in low-violence neighborhoods, with tumor samples having more GR binding sites when compared to normal lung tissue. Tumor samples from patients living in high-violence neighborhoods exhibited increased GR recruitment to genes associated with greater tumor aggressiveness. Our findings suggest that exposure to neighborhood violence may influence tumor biology via reprogramming GR recruitment. Prioritizing lung cancer screening in neighborhoods with increased social stress, such as high violence, may reduce racial disparities in lung cancer.
2024-07-10 | GSE268049 | GEO
Project description:Despite lower rates and intensity of smoking, Black men experience a higher incidence of lung cancer compared to White men. The racial disparity in lung cancer is particularly pronounced in Chicago, a highly segregated urban city. Neighborhood conditions, particularly social stress, may play a role in lung tumorigenesis. Preliminary studies indicate that Black men residing in neighborhoods with higher rates of violent crime have significantly higher levels of hair cortisol, an indicator of stress response. To examine the relationship between social stress exposure and gene expression in lung tumors, we investigated glucocorticoid receptor (GR) binding in lung tumor samples in relation to GR target gene expression levels and zip code level residential neighborhood violence. Spatial transcriptomics and a version of ChIP-sequencing known as CUT & RUN were used. GR recruitment to chromatin was correlated with neighborhood violent crime rate and overall GR binding increased with increasing neighborhood violent crime rates. Among patients residing in high-violence neighborhoods, tumor samples, compared to normal neighboring lung tissue, had fewer GR binding sites. The opposite was seen in patients residing in low-violence neighborhoods, with tumor samples having more GR binding sites when compared to normal lung tissue. Tumor samples from patients living in high-violence neighborhoods exhibited increased GR recruitment to genes associated with greater tumor aggressiveness. Our findings suggest that exposure to neighborhood violence may influence tumor biology via reprogramming GR recruitment. Prioritizing lung cancer screening in neighborhoods with increased social stress, such as high violence, may reduce racial disparities in lung cancer.
2024-07-10 | GSE268048 | GEO
Project description:Loss of Snord116 impacts lateral hypothalamus, sleep, and food-related behaviors
| PRJNA580049 | ENA