Close-up TV News - Prolotheray lecture

Reversing Hypertension

Heavy Metals and all diseases

Close-Up TV News - Dr. Calapai's approach

News 12 Interview: Parkinson’s Disease, Glutathione and Chelation Therapy

News 12 Interview: Platelet-rich plasma therapy

Prolotherapy Interview News 12

News 12 Interview: Diabetes and Weight Loss
Naturally occurring K vitamins inhibit pancreatic cancer cell survival through a caspase-dependent pathway *

Background and Aims:  Available medical therapies against pancreatic cancer are largely ineffective and have many side-effects. Physiologically, vitamins K1 and K2 (VK) act as co-factors for γ-carboxylation of prothrombin and other coagulation factors. In previous studies, VK analogs have been found to have potent negative effects on the survival of various cancer cells. We hypothesized that the well-tolerated and naturally occurring VK1 and VK2 may be used to inhibit pancreatic cancer cell survival.

Methods:  Four pancreas cancer cell lines were tested. Two of these (MiaPaCa2 and PL5) were found to be sensitive to VK1 and VK2 (IC50 values ≤150 µM). To address the mechanisms of this effect on cell survival, we performed cell cycle and apoptosis studies using VK2 (the more potent compound).

Results:  We found that VK induced caspase-dependent apoptosis in over 60% of cells in the sensitive lines at the half maximal inhibitory concentration (IC50) range. Further, this induction in apoptosis was antagonized by a caspase inhibitor. Accompanying apoptosis, a dose- and time-dependent induction of extracellular signal-regulated kinase (ERK) phosphorylation occurred when sensitive lines were treated with either VK1 or VK2 at inhibitory doses. Simultaneous co-treatment of cells with a MEK1 inhibitor and VK prevented both the induction of ERK phosphorylation and the apoptosis, showing that the mitogen-activated protein (MAP) kinase pathway is central for VK-mediated apoptosis in pancreatic cancer cells.

Conclusion:  These data show that naturally-occurring, non-toxic K vitamins can inhibit the survival of some pancreatic cancer cell lines. These novel, safe and clinically-utilized agents initiate a caspase-dependent apoptosis via the MAP kinase pathway and could potentially benefit patients with pancreatic cancer either as a single agent or in combination with chemotherapy for treatment, or for prevention of recurrence of pancreas cancer post resection.

* Legal Disclaimer: Chelation and Hyperbaric Therapy, Stem Cell Therapy, and other treatments and modalities mentioned or referred to in this web site are medical techniques that may or may not be considered “mainstream”. As with any medical treatment, results will vary among individuals, and there is no implication or guarantee that you will heal or achieve the same outcome as patients herein.

As with any procedure, there could be pain or other substantial risks involved. These concerns should be discussed with your health care provider prior to any treatment so that you have proper informed consent and understand that there are no guarantees to healing.

THE INFORMATION IN THIS WEBSITE IS OFFERED FOR GENERAL EDUCATIONAL PURPOSES ONLY AND DOES NOT IMPLY OR GIVE MEDICAL ADVICE. No Doctor/Patient relationship shall be deemed to have arisen simply by reading the information contained on these pages, and you should consult with your personal physician/care giver regarding your medical treatment before undergoing any sort of treatment or therapy.

Published on 10-31-2012