The manner by which cancers evade the immune response is not well-understood. What is known is that the manner is an active process that regulates immune responses employing at least two types of suppressive cells, myeloid-derived suppressive cells and regulatory T cells (Tregs), a key subset of CD4+ T cells that controls peripheral tolerance to self- and allo-antigens. Tregs are considered to play a key role in the escape of cancer cells from anti-tumor effector T cells.

A significant challenge in developing therapies for the treatment and prevention of cancer has been the discovery, selection, and exploitation of antigens.

Melanoma is a particularly aggressive form of cancer primarily caused by over-exposure to sunlight.  Although melanoma can strike at any age, the malignancy disproportionately impacts persons of advanced age, as these individuals often have decades of repeated exposure to harmful levels of ultraviolet radiation.  Scientists at NIH among others have clarified the link between advanced melanoma and other malignancies and expression of SPANX-B.

Cancer is one of the leading causes of death in United States and it is estimated that there will be more than half a million deaths caused by cancer in 2009.  A major drawback of the current chemotherapy-based therapeutics is the cytotoxic side-effects associated with them.  Thus there is a dire need to develop new therapeutic strategies with fewer side-effects.  Immunotherapy has taken a lead among the new therapeutic approaches.  Enhancing the innate immune response of an individual has been a key approach for the treatment against different diseases such as cancer an

Inflammatory processes associated with the over-production of tumor necrosis-alpha (TNF-alpha), a potent activator of the immune system accompany numerous neurodegenerative diseases. TNF-alpha has been validated as a drug target with the development of the inhibitors Enbrel and Remicade (fusion antibodies) as prescription medications. Both, however, are large macromolecules that require direct injection and have limited brain access.

Although multidimensional diffusion/relaxation NMR experiments are widely used in materials sciences and engineering applications, preclinical and clinical MRI applications of these techniques were not feasible. Moreover, higher-field MRI scanners posed another obstacle to translation of this NMR method. Their specific absorption rate (SAR) limits the use of multi-echo or CPMG pulse trains, so that the large amounts of data required by these methods cannot be collected in vivo due to exceedingly long scan times.

The Hippo signaling pathway regulates a multitude of biological processes including cell proliferation, apoptosis, differentiation, tissue homeostasis, and stem cell functions. This axis has been recently listed as one of the top 10 signaling pathways altered in human cancer. Its role in modulating cell growth and proliferation is mediated by the activation of Yes-associated protein 1 (YAP1) and transcriptional co-activator with PDZ-binding domain (TAZ).

Nanoparticles such as lipid-based nanoparticles (LNPs) represent a relatively new era of targeted drug delivery systems wherein these biocompatible particles can carry the drug(s) of interest to a specific tumor site. The new generation of nanoparticles, known as stealth nanoparticles, are engineered to have a coating of polyethylene glycol polymer (PEG) or other glycolipids that enable them to evade the immune system and have a longer circulation lifespan as well as improved bioavailability to diseased tissue and reduced non-specific toxicity.
 

Previously described epidermal growth factor receptor- (EGFR) driven tumor mouse models develop diffuse tumors, which are dissimilar to human lung tumor morphology and difficult to measure by CT and MRI scans. Scientists at the National Cancer Institute (NCI) have developed and characterized a genetically engineered mouse (GEM) model of human EGFR-driven tumor model (hEGFR-TL) that recapitulates the discrete lung tumor nodules similar to those found in human lung tumor morphology.

Current therapies for glioblastoma multiforme (GBM), the highest grade malignant brain tumor, are mostly ineffective, and better preclinical model systems are needed to increase the successful translation of drug discovery efforts into the clinic. Scientists at the National Cancer Institute (NCI) have developed and characterized an orthotopic genetically engineered mouse (GEM)-derived model of GBM that closely recapitulates various human GBM subtypes and is useful for preclinical evaluation of candidate therapeutics.