نتایج جستجو برای: air microenvironment
تعداد نتایج: 233751 فیلتر نتایج به سال:
backgrounds: evidence is accumulating to support disruption of tissue architecture as a powerful event in tumor formation. for the past four decades, intensive cancer research with the premise of “cancer as a cell based-disease” focused on finding oncogenes or tumor suppressor genes. however, the role of the tissue architecture was neglected. three dimensional (3d) cell cultures which can recap...
mechanism of the binding of lomefloxacin (lmf) with human serum albumin has been studied at physiological ph (7.4) using fluorescence spectroscopic technique. lmf is a third-generation fluoroquinolone antibiotic that exhibits striking potency against a broad spectrum of gram-negative and gram-positive bacteria through inhibition of dna gyrase. lomefloxacin is a drug that is excreted in urine an...
According to the cancer immunoediting model, the interplay between tumor cells and the host immune system is crucial for the control of tumor growth. NB is a pediatric tumor that presents with metastatic disease at diagnosis in about 50% of the cases, the majority of which have poor prognosis. In this Review article, immune escape pathways adopted by human neuroblastoma (NB) cells are reviewed....
Pancreatic ductal adenocarcinoma (PDAC) is the most common malignant neoplasm of the pancreas and presents with dismal prognosis. Key hallmarks of these tumors are chemo resistance and early metastasis, leaving few effective options for curative treatment. In part, treatment resistance might be spawned by tumor cell plasticity within pancreatic cancers, and specifically by therapy resistant pan...
Dependency on tumor oxygenation is one of the major features of radiation therapy and this has led many radiation biologists and oncologists to focus on tumor hypoxia. The first approach to overcome tumor hypoxia was to improve tumor oxygenation by increasing oxygen delivery and a subsequent approach was the use of radiosensitizers in combination with radiation therapy. Clinical use of some of ...
The tumor microenvironment is a mixture of extracellular matrix molecules, tumor cells, endothelial cells, fibroblasts and immune cells. Tumor growth and metastasis formation are dependent on the growth of blood vessels into the tumor mass. The tumor microenvironment contributes to this pathological angiogenic process. The extracellular matrix and basement membranes are a source for endogenous ...
Purpose: There is increasing evidence for the importance of tumor oxygenation in the development, progression, and response to therapy. Consequently, many techniques have been developed to assess tumor oxygenation, as reviewed extensively . Methods may provide a qualitative impression of oxygenation status or rigorous quantitation. Techniques vary in spatial and temporal resolution and the abil...
The physical microenvironment of tumours is characterized by heterotypic cell interactions and physiological gradients of nutrients, waste products and oxygen. This tumour microenvironment has a major impact on the biology of cancer cells and their response to chemotherapeutic agents. Despite this, most in vitro cancer research still relies primarily on cells grown in 2D and in isolation in nut...
UNLABELLED We examined the immune microenvironment of primary colorectal cancer using immunohistochemistry, laser capture microdissection/qRT-PCR, flow cytometry, and functional analysis of tumor-infiltrating lymphocytes. A subset of colorectal cancer displayed high infiltration with activated CD8(+) cytotoxic T lymphocyte (CTL) as well as activated Th1 cells characterized by IFNγ production an...
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