The suppression of the immune system creates a permissive environment for development and progression of cancer. One population of immunosuppressive cells that have become the focus of intense study is myeloid derived suppressor cells (MDSCs), immature myeloid cells able to induce immune-escape, angiogenesis, and tumor progression. Two different subpopulations have been identified and studied: ...

V-domain Immunoglobulin Suppressor of T cell activation (VISTA) is an inhibitory B7 family immune-checkpoint molecule expressed on myeloid cells. VISTA-KO mice exhibit Psoriasis-like inflammation. Myeloid cells in psoriasis have multiple abnormalities, including aberrancies monocytic myeloid-derived suppressor and adhesiveness. Whether VISTA signaling related to Psoriasis dysfunction unknown. I...

OBJECTIVE It has been shown that SOCS-1 plays an important role in the proper control of cytokine/growth factor responses and acts as a tumor suppressor in acute myeloid leukemias. Therefore, the objective of the present study was to evaluate the in vitro effect of treatment with Nutlin-3, a small molecule inhibitor of the MDM2/p53 interaction, on the expression of the suppressor of cytokine si...

Many malignant cells produce increased amounts of lactate, which promotes the development of myeloid-derived suppressor cells (MDSCs). MDSCs, lactate, and a low pH in the tumor microenvironment inhibit the function of natural killer (NK) cells and T lymphocytes, hence allowing for disease progression. Ketogenic diets can deplete tumor-bearing animals from MDSCs and regulatory T cells, thereby i...

Abstract INTRODUCTION Infiltrating immune-suppressive myeloid cells represent a tumor supportive population that contributes to immune checkpoint inhibitor resistance and poor survival in Glioblastoma (GBM) patients. We have previously characterized monocytic-myeloid derived suppressor (M-MDSCs) based on their dual expression of chemokine receptors CCR2 CX3CR1(CCR2+/CX3CR1+). Genetic pharmacolo...

Development of solid cancer depends on escape from host immunosurveillance. Various types of immune cells contribute to tumor-induced immune suppression, including tumor associated macrophages, regulatory T cells, type 2 NKT cells, and myeloid-derived suppressor cells (MDSCs). Growing body of evidences shows that MDSCs play pivotal roles among these immunosuppressive cells in multiple steps of ...

Research in recent years has brought a wealth of information about the important role of immune suppressive myeloid cells in cancer and other diseases. There is growing evidence suggesting that the expansion of these regulatory cells may represent a common response to all forms of inflammation. Several clinical trials target these cells with the goal of improving the immune response in cancer. ...