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Metastasis Cancer Tumor Cells - Europe PMC

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Last Updated: 27 January 2022

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The Comprehensive Analysis of Competitive Endogenous RNA Networks and Tumor-Infiltrating Immune Cells in Gastric Cancer With Lymph Node Metastasis

Methods: We divided all TCGA gastric cancer patients into the whole, intestinal, and diffuse cohorts for further analysis, assembled a robust endogenous RNA network, and evaluated immune cells using CIBERSORTx. The lymph node metastasis prediction was performed by computer modeling and support vector machine design. The support vector machines recursive feature elimination was used for screening significant signatures and support vector machines for model determining model estimation. Using CIBERSORTx, we divided all TCGA gastric cancer patients into the whole, intestinal, and diffuse cohorts for further analysis, development of a standardized endogenous RNA network and measured immune cells. For establishing model prediction of lymph node metastasis, the support vector machines recursive feature elimination was used for screening important signatures and the support vector machines. CD70 with dendritic cells and so on was found in some key co-expression profiles between immune cells and ceRNA networks, which led to significant correlation CD70 with dendritic cells and ceRNAs networks, and so on.

Source link: https://europepmc.org/article/PPR/PPR430073


Combination Treatment of Retinoic Acid Plus Focal Adhesion Kinase Inhibitor Prevents Tumor Growth and Breast Cancer Cells Metastasis

We found that genes encoding proteins that FAK specifically or indirectly modulates are deregulated in metastatic BC cells, which are deregulated in comparison to normal cells. Between RA-resistant and RA-sensitive BC cells, we discovered a distinctive pattern of gene up/down regulation. In addition, we reported that both RA-resistant BC cells behave the same way after RA treatment, modulating the expression of genes involved in Src-FAK signaling. We also established that RA results are extrapolated to other cancer cells, including human cervical carcinoma cells HeLa. In addition, RA has significantly reduced metastatic lung cell dissemination in LM3 cells in an experimental metastatic assay. Our analysis shows that RA plays a crucial role in inhibiting BC tumor formation and metastatic dissemination in vitro and in vivo by monitoring FAK expression and localization. With FAKi coadministration in BC tumors, the vulnerability to RA therapies could be enhanced. FAKi exacerbated these effects, showing that the sensitivity to RA therapies could be enhanced.

Source link: https://europepmc.org/article/PPR/PPR429108


Cascade-responsive nano-assembly for efficient photothermal-chemo synergistic inhibition of tumor metastasis by targeting cancer stem cells.

Metastasis has been consistently identified as one of the most lethal threats to cancer patients. Cancer stem cells, which are resistant to most cytotoxic drugs and radiation, are the most common cause of metastasis, due to their unique genetic and environmental environment. To achieve synergistic photothermal-chemo therapy, a highly effective diradical-featured photothermal agent and a natural cytotoxic heat shock protein inhibitor were co-loaded in redox-sensitive chitosan matrices. PEG shells that block nano-assembly from mononuclear phagocytic clearance may be able to relocate the positively charged chitosan nanoparticles quickly and allow the CSCs to select criteria for CD44 protein. This report discusses a potential CSCs-targeted drug delivery scheme to solve the CSCs-related metastasis.

Source link: https://europepmc.org/article/MED/34890970


Alphataxin, a Small-Molecule Drug That Elevates Tumor-Infiltrating CD4+ T Cells, in Combination With Anti-PD-1 Therapy, Suppresses Murine Renal Cancer and Metastasis.

However, as many as 80% of cancer patients do not respond to immune checkpoint therapy, despite this, 87 percent of cancer patients do not respond to immune checkpoint therapy. In the opposite manner as immune checkpoints and receptors, cytotoxic CD8+ T cell function, cytokines, in particular, tumor necrosis factor beta and its CD8+ T cell receptor, are vitally dependent on CD4+ T helper cell cytokines. In a murine model of renal cell carcinoma, we wanted to see how Alphataxin affected tumor formation. Moreover, in mice implanted orthotopically with one log more tumor cells, doubling Alphataxin dose in combination therapy resulted in complete remission in one-third of mice and 81% inhibition of tumor formation in the remaining two-thirds of mice, which was exhibited with 100% reduction in one-third of mice and 81% inhibition of tumor formation in the remaining two-thirds.

Source link: https://europepmc.org/article/MED/34900690


Neutrophil Cyto-Pharmaceuticals Suppressing Tumor Metastasis via Inhibiting Hypoxia-Inducible Factor-1α in Circulating Breast Cancer Cells.

Living neutrophil cyto-pharmaceuticals coated with HIF-1 inhibitor are manufactured to therapeutically inhibit HIF-1 after establishing HIF-1 as a potential site for metastasis prevention. According to the inflammatory chemotaxis of neutrophils and down-regulate HIF-1, CytPNEs have been able to specifically deliver the HIF-1 inhibitor to 4T1 cells, thereby preventing metastasis and prolonging the median survival of mice with breast cancer lung metastasis.

Source link: https://europepmc.org/article/MED/34811972


Diagnosis of Leptomeningeal Metastasis in Women With Breast Cancer Through Identification of Tumor Cells in Cerebrospinal Fluid Using the CNSide™ Assay.

It may be more sensitive to detect tumor cells in CSF. We investigated whether CNSide, a new assay for tumor cell detection in CSF, would detect CSF-TCs more accurately than conventional CSF cytology. METHODS: We enrolled adults with metastatic breast cancer and clinical suspicion for LM in a lumbar puncture for CSF cytopathology and CNSide. Positive CSF cytology and/or unequivocal MRI findings were used to identify Leptomeningeal disease. For the diagnosis of LM, we determined the sensitivity and specificity of CSF cytology and CNSide. Among these patients, concordance of ER and HER2 status between CSF-TCs and metastatic biopsy was 60% and 75%, respectively. Somatic mutations in three patients were found in three patients, including one with PIK3CA p. H1047L in blood and CSF, and three in CSF. CONCLUSIONS:CNSide can be a cost-effective way to detect CSF-TCs in patients with metastatic breast cancer, and may be a useful diagnostic device for LM.

Source link: https://europepmc.org/article/MED/34920954


Yerba Mate Modulates Tumor Cells Functions Involved in Metastasis in Breast Cancer Models.

Breast cancer is the most common cancer in women, and tumor metastasis is a common cause of cancer-related deaths in women. In BC models, we wanted to determine the anti-metastatic characteristics of yerba mate extracts. In BALB/c mice, the F3II syngeneic mammary carcinoma model was used to monitor tumor formation, BC metastasis, and survival. Cell proliferation and decreased tumor cell adhesion, migration, and invasion were inhibited by in vitro YMe. According to our preclinical findings, YMe may influence tumor progression and metastasis in BC models.

Source link: https://europepmc.org/article/MED/34858179


MVP Expression Facilitates Tumor Cell Proliferation and Migration Supporting the Metastasis of Colorectal Cancer Cells.

Gene expression is dysregulated in cancer cells, which may promote their survival in the tumor environment. The expression of MVP protein in normal colon tissue, primary colorectal tumor, and metastasis did not rise in metastatic cells, according to a comparativative analysis of MVP protein expression in normal colon tissue, primary colorectal tumor, and metastasis showed that the protein does not rise in the primary tumor but not rise in metastatic cells. MVP-positive and MVP-negative cells found that MVP is involved in controlling cancer cell proliferation and migration. The full transcriptome microarrays showed that MVP is involved in controlling tumor formation and migration of cancer cells. Because of its effect on cell migration, MVP may be able to promote metastasis of colon cancer.

Source link: https://europepmc.org/article/MED/34829999

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions