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Immune Response in Peripheral Blood of Patients With Colon Cancer

ABSTRACT: RATIONALE: Studying samples of blood from patients with cancer in the laboratory may help doctors learn more about changes that may occur in the immune system that may help kill cancer cells. PURPOSE: This laboratory study is looking at anticancer immune responses in the peripheral blood of patients with colon cancer.

DISEASE(S): Colorectal Cancer,Colorectal Neoplasms,Colonic Neoplasms

PROVIDER: 2072210 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Regional CNS immune fingerprint in chronic peripheral inflammation

Project description:Rheumatoid arthritis (RA) is linked to depression and dementia in later life by inflammatory involvement of the central nervous system (CNS). Regional heterogeneity of brain immunophenotypes was described under homeostasis, but a topographical resolution of CNS immune responses in chronic peripheral inflammatory diseases like RA is missing. We demonstrate regional heterogeneity of CNS susceptibility to chronic peripheral inflammation in the human tumor necrosis factor α transgenic (TNFtg) mouse model of RA. TNFtg mice showed myeloid cell infiltration, microglial activation, and a mutual transcriptomic fingerprint of neuroinflammation in the cortex, striatum, and thalamus. Immune responses were minimal in the hippocampus and cerebellum. We demonstrate regional CNS immune responses to chronic peripheral inflammation, sparing the hippocampus and cerebellum and reversible by peripheral anti-inflammatory treatment. Targeting microenvironmental susceptibility or resilience of brain regions will help to prevent and treat RA-related neuropsychiatric comorbidity. RNA-sequencing was performed from five brain regions (cortex, striatum, thalamus, hippocampus, and cerebellum) from C57Bl6/J wild type mice and TNFtg mice (strain Tg197; kindly provided by George Kollias (Fleming Institute, Vari, Greece).

2018-10-22 | E-MTAB-7279 | biostudies-arrayexpress

UMCC 003 Cancer-Related Protein Biomarkers in Blood and Tumor Tissue of Patients With Cancer

Project description:RATIONALE: Studying samples of blood and tumor tissue in the laboratory from patients with cancer and blood from healthy participants may help doctors learn more about changes that may occur in DNA and identify biomarkers related to cancer. PURPOSE: This laboratory study is looking at cancer-related protein biomarkers in the blood and tumor tissue of patients with cancer and in the blood of healthy participants.

| 2072186 | ecrin-mdr-crc

Study of Blood Samples From Patients With Malignant Melanoma, Metastatic Breast Cancer, Advanced Lung Cancer, Pancreatic Cancer, or Colorectal Cancer.

Project description:RATIONALE: Studying samples of blood from patients with cancer in the laboratory may help doctors learn more about changes that occur in peptides and proteins and identify biomarkers related to cancer. PURPOSE: This research study is looking at blood samples from patients with malignant melanoma, metastatic breast cancer, advanced lung cancer, pancreatic cancer, or colorectal cancer.

| 2077830 | ecrin-mdr-crc

Single-Cell Transcriptomics Reveals Peripheral Immune Responses in Non-Segmental Vitiligo

Project description:Vitiligo is a common autoimmune depigmented dermatology due to the destruction of melanocytes. Much evidence suggests that vitiligo is associated with systemic immune activation. Previous studies have focused on immune cell infiltration in and around lesion areas, while few studies have investigated the cell types and function of circulating immune cells in peripheral blood. We collected peripheral blood from five patients with progressive non-segmental vitiligo (PV) and three healthy controls (HC).Single-cell RNA sequencing(scRNA-seq) is used to investigate the mechanisms of peripheral immune responses in vitiligo patients.

2023-11-07 | GSE231794 | GEO

Matched analysis of detailed peripheral blood and tumor immune microenvironment profiles in bladder cancer

Project description:Background: Bladder cancer and therapy responses hinge on immune profiles in the tumor microenvironment (TME) and blood, yet studies linking tumor-infiltrating immune cells to peripheral immune profiles are limited. Methods: DNA methylation cytometry quantified TME and matched peripheral blood immune cell proportions. With tumor immune profile data as the input, subjects were grouped by immune infiltration status and consensus clustering. Results: Immune hot and cold groups had different immune compositions in the TME but not in circulating blood. Two clusters of patients identified with consensus clustering had different immune compositions not only in the TME but also in blood. Conclusions: Detailed immune profiling via methylation cytometry reveals the significance of understanding tumor and systemic immune relationships in cancer patients.

2023-12-31 | GSE237100 | GEO

Study of Genes and the Environment in Patients With Colorectal Cancer in the East Anglia Region of the United Kingdom

Project description:RATIONALE: Studying samples of blood from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This study is looking at genetic susceptibility for cancer and interactions between genes and the environment in patients with colorectal cancer.

| 2061453 | ecrin-mdr-crc

Immune correlates of early prednisolone therapy in children and adolescents with dengue

Project description:Dengue is the most important arboviral infection of humans. A host pro-inflammatory immune response is widely believed to contribute to the clinical complications that occur in some patients with dengue. Here, immune correlates of early prednisolone therapy were defined in Vietnamese dengue patients enrolled in a randomized controlled trial, comparing a three day regimen of high (2mg/kg) or low (0.5mg/kg) dose prednisolone with placebo. Prednisolone conferred a small change in the whole blood gene expression profile, with 81 transcripts from 64 genes differentially abundant between high-dose prednisolone and placebo treated patients. A prominent theme in the prednisolone gene expression signature was the under-abundance of transcripts from genes associated with T and NK cell cytolytic effector functions. Surprisingly, prednisolone therapy was not associated with attenuation of early-convalescent T cell responses or plasma cytokine levels. Collectively, these findings are consistent with a remarkably benign influence of prednisolone on immune response parameters in dengue patients, and are in line with the trial evidence showing lack of impact on clinical laboratory endpoints and clinical phenotype. The gene expression microarray assay was conducted on samples from the first 123 consecutive patients (placebo, 40; 0.5mg/kg prednisolone, 42; 2.0mg/kg prednisolone, 41).

2012-12-31 | E-GEOD-40165 | biostudies-arrayexpress

Single-cell transcriptome profiling of mouse bone marrow-derived immune cells in response to trypanosome infection

Project description:Bone marrow is an extremely important organ as a primary hematopoietic organ where new red blood cells and immune cells are produced. Parasitic infections showed disruption of red blood cell production and changes in immune responses in bone marrow. Therefore, we generated single-cell RNA sequencing (scRNA-seq) data to reveal transcriptomic profile changes to parasitic infection by trypanosomes. These data will ultimately help us understand the mechanisms of the host immune response to trypanosomosis.

2023-08-10 | GSE234000 | GEO

Study of Biomarkers in Blood & Tissue Samples From Patients With Colorectal Cancer or Polyps & Patients Without Polyps

Project description:RATIONALE: Studying samples of blood and tissue in the laboratory from patients with cancer, patients with colorectal polyps and from patients without polyps may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This research study is looking at biomarkers in blood and tissue samples from patients with colorectal cancer or colorectal polyps and from patients without polyps (healthy volunteers).

| 2072068 | ecrin-mdr-crc

Immune correlates of early prednisolone therapy in children and adolescents with dengue

2012-12-31 | GSE40165 | GEO

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