UNC scientists discover hidden subpopulation of melanoma cells

(University of North Carolina Health Care) UNC researchers discover a subpopulation of melanoma cancer cells in blood vessels of tumors. These cells, which mimic non-cancerous endothelial cells that normally populate blood vessels, could provide researchers with another target for cancer therapies.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news

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In this study, we investigated the therapeutic effects of OMA in melanoma and elucidated the associated underlying mechanisms of action using in vitro and in vivo models. OMA targeting IDH enzymes suppressed melanoma growth through activation of apoptosis and inhibition of angiogenesis. Mechanistically, our findings showed that OMA activated p53-mediated apoptosis through ROS-dependent ATM-Chk2 signaling and reduced the expression of vascular endothelial growth factor through ROS-dependent E2F1-mediated hypoxia inducible factor-1α degradation. In particular, OMA-induced suppression of IDH activity resulted in inducti...
Source: Biochimie - Category: Biochemistry Authors: Tags: Biochimie Source Type: research
The objective of this review is to provide a current perspective on the cancer-specific role of MDA-9/Syntenin in order to explore its potential for cancer drug discovery and cancer therapy.
Source: Computational and Structural Biotechnology Journal - Category: Biotechnology Source Type: research
CONCLUSIONS: Our preliminary data demonstrate that ozone therapy is a valid supportive therapy for fatigue in cancer patients, both during cancer therapy and in a palliative setting with no significant side effects. PMID: 30536352 [PubMed - in process]
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
In conclusion, BP/LPPC can inhibit growth of melanoma cells and induce cell arrest and apoptosis, indicating that BP/LPPC has great potential for development of melanoma therapy agents.
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
We present a comprehensive knowledge of immune therapy through PD-1/PD-L1 blockade that argues how efficient the process is, in colon cancer carcinoma. In this review, we discuss the responsiveness of immunotherapy on PD-1/PD-L1 blockade and various tactics for overcoming weak responses to these checkpoint inhibitors in CRC. More research using controlled trials is required to enable new discoveries to provide continued success with immune-based therapies and grounds for optimism about the future of CRC patients.Graphical abstractThe mechanism of interaction between PD-1+ T-cells and PD-L1/2+ tumor cells.
Source: Biomedicine and Pharmacotherapy - Category: Drugs & Pharmacology Source Type: research
We present a comprehensive knowledge of immune therapy through PD-1/PD-L1 blockade that argues how efficient the process is, in colon cancer carcinoma. In this review, we discuss the responsiveness of immunotherapy on PD-1/PD-L1 blockade and various tactics for overcoming weak responses to these checkpoint inhibitors in CRC. More research using controlled trials is required to enable new discoveries to provide continued success with immune-based therapies and grounds for optimism about the future of CRC patients. PMID: 30522017 [PubMed - as supplied by publisher]
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - Category: Drugs & Pharmacology Authors: Tags: Biomed Pharmacother Source Type: research
Abstract Microphthalmia-associated transcription factor (MITF) is a key transcription factor in melanoma development and progression. MITF amplification and downregulation have been observed in a significant proportion of melanoma patients and correlate with clinical outcomes. Here, we have investigated the effect of MITF on melanoma chemokine expression and immune cell attraction. In B16F10 melanoma cells, MITF knockdown reduced expression of CXCL10, with concomitantly decreased attraction of immune cells and accelerated tumor outgrowth. Conversely, overexpression of MITF in YUMM1.1 melanoma cells also led to an ...
Source: Translational Oncology - Category: Cancer & Oncology Authors: Tags: Transl Oncol Source Type: research
ConclusionsUsing novel selective or dual BCL-2/BCL-xL inhibitor, we probed the oncogene addiction patterns in a panel of hematologic malignancy cell lines, and revealed a mix pattern of dependence on BCL-2, BCL-xL or MCL-1. The BCL-2 addiction relies on the sequestration of pro-death proteins like BIM. Disrupting BCL-2:BIM complex by BCL-2 inhibitors can trigger cell death. MDM2 inhibitor APG-115 reprograms cell cycle, apoptosis and immune/inflammatory pathways to re-sensitize cells to BCL-2 inhibitor.DisclosuresDeng: Ascentage Pharma Group: Employment. Yin: Ascentage Pharma Group: Employment. Mao: Ascentage Pharma Group: ...
Source: Blood - Category: Hematology Authors: Tags: 603. Oncogenes and Tumor Suppressors: Poster II Source Type: research
Conclusion: Our novel findings demonstrated the therapeutic potential of Tet2 inactivation in immune cells during cancer immunotherapy. In our study, we observed that Tet2 depleted CD8+ TILs displayed increased anti-tumor efficiency in a mouse model of melanoma. Tet2 deletion could effectively alleviate T cell exhaustion to boost CD8+ TIL function. Nonetheless, since Tet2 deficiency is closely associated with various hematology disorders [6,7]; cautions must be taken to balance the tumor promoting and immune-boosting properties of Tet2 during cancer therapy. A temporally controllable system to inactivate Tet2 in specific i...
Source: Blood - Category: Hematology Authors: Tags: 203. Lymphocytes, Lymphocyte Activation, and Immunodeficiency, including HIV and Other Infections: T cell biology Source Type: research
(University of Tokyo) Melanoma skin cancer tumors grow larger and are more likely to metastasize due to interactions between a pair of molecules, according to experiments in mice and human cells. The results may restore the potential for a type of cancer therapy previously abandoned in clinical trials. The results also implicate one molecule already connected to obesity and dementia as a potential cause of metastasis, or spread of cancer cells to other areas of the body.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news
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