IV vitamin C shown to augment cancer killer effect of chemotherapy. This study looked at ovarian cancer in animal models and in humans. The effect--a synergistic effect was found that promoted tumor destruction. The great thing about IV vitamin C is the benefit but also the very low side effect profile.
Aside from THC, C. sativa produces approximately 70 other cannabinoids, although, unlike THC, many of them exhibit little affinity for CB receptors (10, 20). Of interest, at least one of these components, namely, cannabinol (CBD; Supplementary Fig. 1), has been shown to reduce the growth of different types of tumor xenografts including gliomas
the combined administration of THC and CBD is being therapeutically explored (10, 20, 26), although its effects on the proliferation and survival of cancer cells have only been analyzed in vitro
metformin augments chemotherapy in the treatment of pancreatic cancer. It promotes the anti-proliferative effects of mTORC and inhibits the proliferative PI3k/mTOR. It also works synergistically with the known anti-tumor anti-malarial drugs chloroquine and with the herb berberine.
however, 100 mg/kg of niclosamide could suppress the growth of the relatively slow-growing tumor (CRC039) to the same level
niclosamide was confirmed to inhibit the growth of human CRCs in NOD/SCID mice
niclosamide can inhibit Wnt pathway activation in CRC
The mechanism of action of the niclosamide in our studies is thought to be through internalization of Fzd1 and downregulation of Wnt pathway intermediaries
Recently, Jin et al. (26) reported that niclosamide inhibited the NF-κB pathway and increased reactive oxygen species levels to induce apoptosis in AML cells. In contrast, we did not observe any inhibitory effect of niclosamide on NF-κB signaling in our CRC model
oral administration of niclosamide does result in sufficient distribution of the drug into tumor tissue, to prove a prolonged inhibitory effect on Wnt/ß-catenin signaling, resulting in tumor growth inhibition
we required higher doses (100 ~ 200 mg/kg body weight) of niclosamide in order to demonstrate significant inhibition of tumor growth in NOD/SCID mice
niclosamide concentrations in tumor tissue showed good correlation with those in plasma, suggesting the efficient distribution of niclosamide from blood to tumor tissue
we observed downregulation of Dvl2 and ß-catenin cytosolic expression in niclosamide-treated tumor cells in vivo
One potential concern for the use of niclosamide as an anticancer therapy is the poor absorption of this drug
The Wnt signaling pathway, fundamental to embryonic tissue patterning, is also activated in stem-like cells
The canonical Wnt pathway is activated in approximately 80% of sporadic CRC primarily due to mutations in the APC gene
recent observations reveal that Wnt ligands or inhibitors may affect the growth and survival of colon cancer cells in spite of the presence of APC or CTNNB1 mutations
Niclosamide found to inhibit Wnt/B-catenin signaling pathway, and thus promotion of apoptosis, in colorectal cancer cells in Vivo study. It was also found to augment chemotherapeutic.
GCs induce increased cellular expression of receptors for several pro-inflammatory cytokines including interleukin (IL)-1 (Spriggs et al. 1990), IL-2 (Wiegers et al. 1995), IL-4 (Paterson et al. 1994), IL-6 (Snyers et al. 1990), and IFN-g (Strickland et al. 1986), as well as GM-CSF
GCs have also been shown to stimulate effector cell functions including phagocytosis by monocytes (van der Goes et al. 2000), effector cell proliferative responses (Spriggs et al. 1990), macrophage activation (Sorrells and Sapolsky 2010), and a delay of neutrophil apoptosis
a concentration- and time-dependent range of GC effects that are both pro- and anti-inflammatory
basal (diurnal) concentrations of cortisol do not exert an anti-inflammatory effect on several pro-and anti-inflammatory mediators of the human immune inflammatory response
withdrawal of cortisol activity in vivo did not lead to increased inflammatory responsiveness of immune effector cells
maximal suppression of inflammation was achieved by a stress-associated, but still physiologic, cortisol concentration. There was no greater anti-inflammatory effect at higher cortisol concentrations (Yeager et al. 2005) although IL-10 concentrations continued to increase with increasing cortisol concentrations as we and others have shown
acutely, physiological cortisol concentrations are anti-inflammatory and, as proposed, act to limit over expression of an inflammatory response that could lead to tissue damage
Acutely, cortisol has anti-inflammatory effects following a systemic inflammatory stimulus (Figure 4). However, a cortisol concentration that acts acutely to suppress systemic inflammation also has a delayed effect of augmenting the inflammatory response to subsequent, delayed stimulu
1) GCs can exert pro-inflammatory effects on key inflammatory processes and, 2) GC regulation of inflammation can vary from anti- to a pro-inflammatory in a time-dependent manner
The immediate in vivo effect of both stress-induced and pharmacological GC concentrations is to suppress concurrent inflammation and protect the organism from an excessive or prolonged inflammatory response
GCs alone, in the absence of an inflammatory stimulus, up-regulate monocyte mRNA and/or receptors for several molecules that participate in pro-inflammatory signaling, as noted above and in the studies presented here.
In humans, as shown here, if in vivo GC concentrations are elevated concurrent with an inflammatory stimulus, anti-inflammatory effects are observed
In sharp contrast, with a time delay of 12 or more hours between an increased GC concentration and the onset of an inflammatory stimulus, enhancing effects on inflammation are observed. These effects have been shown to persist in humans for up to 6 days
GC-induced enhancement of inflammatory responses is maximal at an intermediate concentration, in our studies at a concentration that approximates that observed in vivo following a major systemic inflammatory stimulus
In addition to enhanced responses to LPS, recently identified pro-inflammatory effects of GCs also show enhanced localization of effector cells at inflammatory sites
we hypothesize that pre-exposure to stress-associated cortisol concentrations “prime” effector cells of the monocyte/macrophage lineage for an augmented pro-inflammatory response by; a) inducing preparative changes in key regulators of LPS signal transduction, and b) enhancing localization of inflammatory effector cells at potential sites of injury
Hyperthermia differs fundamentally from fever in that it elevates the core body temperature without changing the physiological set point
hyperthermia is induced by increasing the heat load and/or inactivating heat dissipation
mor cells [2]. Although significant cell killing could be achieved by heating cells or tissues to temperatures > 42°C for 1 or more hours, the application, measurement and consistency of this temperature range within the setting of cancer clinical trials
mild temperature hyperthermia (ie, within the fever-range, 39–41°C)
they are key regulators of cellular protein activity, turnover and trafficking
Hsps ensure appropriate post-translational protein folding, and are able to refold denatured proteins, or mark irreversibly damaged proteins for destruction
the ability of fever-range hyperthermia to induce reactive immunity against tumor antigens through DCs and NK-cells is likely mediated by Hsps
thermotolerance
Hsps support the malignant phenotype of cancer cells by not only affecting the cells’ survival, but also participating in angiogenesis, invasion, metastasis and immortalization mechanisms
Hsps released from stressed or dying cells activate dendritic cells (DCs), transforming them into mature APCs
In theory, fever-range hyperthermia may take advantage of tumor cell Hsps by inducing their release from tumor cells and augmenting DC priming against tumor antigens
In several models of hyperthermia, heat-treated tumors exhibited improved DC priming and generation of systemic immunity to tumor cell
hyperthermia alone can enhance antigen display by tumor cells, thus rendering them even more susceptible to programmed immune clearance
Fever-range hyperthermia may also induce Hsps
Hsps may exert an adjuvant effect by bolstering MHC class II and co-stimulatory molecule expression by DCs
thermal ablation of liver tumors in particular has demonstrated an ability to potentiate immune responses [57, 58] and elicit robust T-cell infiltrates at ablation sites
specific Hsp, Hsp70, directly inhibits apoptosis pathways in cancer cells, as demonstrated in human pancreatic, prostate and gastric cancer cells
Cross-priming is the ability of extracellular Hsps complexed to tumor peptides to be internalized and presented in the context of MHC class I molecules on APCs, thus allowing potent priming of CTLs against tumor antigens
It has been reported that Hsps are generated from necrotic tumor cell lysates, but not from tumor cells undergoing apoptosis
tumor cells exposed to hyperthermia in the heat shock range (42°C for 4h) prior to lysing, DC activation and cross-priming were significantly enhanced with the application of heat
Due to the ability of Hsps to activate DCs directly by chaperoning tumor antigens upon their release [28], it is possible that both local and regional immune stimulation can be achieved with hyperthermia.
support the use of hyperthermia as an inducer of Hsps to serve as ‘danger signals’, activating antitumor immune responses
whole-body hyperthermia not only augments immune responses, but also stimulates the migration of skin-derived DCs to draining lymph nodes
Hyperthermia increased NK cell activation, proliferation, and infiltration, which equals increased cytotoxicity.
exposure to fever-range hyperthermia resulted in improved endogenous NK-cell cytotoxicity to several cancer types
improved activation and function of DCs and NK cells following hyperthermia
Hyperthermia increases the expression ICAM-1 a key adhesion molecule,
The combined effects of hyperthermia on lymphoid tissue endothelium and lymphocytes can promote immune surveillance and increase the probability of naive lymphocytes leaving the circulation and encountering their cognate antigen displayed by DCs in lymphoid organs.
In independent clinical studies, whole-body hyperthermia resulted in a transient decrease in circulating lymphocytes in patients with advanced cancer [12, 94, 99, 100], a finding which mirrored observations in animal models in which lymphocyte entry into lymph noeds was increased following hyperthermia treatment [93]. Enhanced recruitment of lymphocytes to lymphoid tissues may be exploited in the treatment of malignancies.
The initial tumor antigen presentation and initiation of clonal expansion of CTLs transpires in the lymph nodes and cannot take place outside this specialized compartment
the ability of DCs present in the lymph nodes to stimulate an anti-tumor immune response is critical
hyperthermia has been shown to improve immune surveillance by T-cell