Navigation Links
Synthetic molecule causes cancer cells to self-destruct

Scientists have found a way to trick cancer cells into committing suicide. The novel technique potentially offers an effective method of providing personalized anti-cancer therapy.Most living cells contain a protein called procaspase-3, which, when activated, changes into the executioner enzyme caspase-3 and initiates programmed cell death, called apoptosis. In cancer cells, however, the signaling pathway to procaspase-3 is broken. As a result, cancer cells escape destruction and grow into tumors.

"We have identified a small, synthetic compound that directly activates procaspase-3 and induces apoptosis," said Paul J. Hergenrother, a professor of chemistry at the University of Illinois at Urbana-Champaign and corresponding author of a paper to be posted online this week ahead of regular publication by the journal Nature Chemical Biology. "By bypassing the broken pathway, we can use the cells' own machinery to destroy themselves."

To find the compound, called procaspase activating compound one (PAC-1), Hergenrother, with colleagues at the U. of I., Seoul National University, and the National Center for Toxicological Research, screened more than 20,000 structurally diverse compounds for the ability to change procaspase-3 into caspase-3.

The researchers tested the compound's efficacy in cell cultures and in three mouse models of cancer. The testing was performed in collaboration with William Helferich, a professor of food science and human nutrition at the U. of I., and Myung-Haing Cho at Seoul National University. The researchers also showed that PAC-1 killed cancer cells in 23 tumors obtained from a local hospital.

Cell death was correlated with the level of procaspase-3 present in the cells, with more procaspase-3 resulting in cell death at lower concentrations of PAC-1.

"This is the first in what could be a host of organic compounds with the ability to directly activate executioner enzymes," said Hergenrother, who is also an af filiate of the Institute for Genomic Biology at the U. of I. "The potential effectiveness of compounds such as PAC-1 could be predicted in advance, and patients could be selected for treatment based on the amount of procaspase-3 found in their tumor cells."

Such personalized medicine strategies are preferential to therapies that rely on general cytotoxins, the researchers say, and could be the future of anti-cancer therapy.


'"/>

Source:University of Illinois at Urbana-Champaign


Related biology news :

1. Synthetic Protein Eases Arthritis Symptoms in Mice
2. Synthetic peptide targets latent papilloma virus infections
3. Chemists create Superbowl molecule; May lead to better health
4. Key molecule in plant photo-protection identified
5. Inflammatory molecules released by pollen trigger allergies
6. Researchers discover molecule that causes secondary stroke
7. Yale researchers identify molecule for detecting parasitic infection in humans
8. Scientists identify molecule that regulates well-known tumor suppressor
9. Medical molecules designed to respond to visible light that can penetrate tissue
10. Researchers find promising cancer-fighting power of synthetic cell-signaling molecule
11. Chemists synthesize molecule that helps body battle cancers, malaria
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/31/2017)...  Spero Therapeutics, LLC, a biopharmaceutical company founded ... bacterial infections, today announced it has acquired a ... Bono Bio Ltd (PBB) to bolster its pipeline ... of Gram-negative bacteria.   The assets acquired have been ... group company. "The acquisition of these ...
(Date:1/25/2017)... 2017 The Elements of Enterprise Information Security ... comprised of a comprehensive set of business processes ... digital identities and providing a secured and documented ... significant number of programs opted by enterprises to ... optimizing processes and changing policies. However, there are ...
(Date:1/21/2017)... -- Research and Markets has announced the addition of ... their offering. ... The global voice recognition biometrics market to grow at a CAGR ... covers the present scenario and the growth prospects of the global ... the report considers the revenue generated from the sales of voice ...
Breaking Biology News(10 mins):
(Date:2/23/2017)... ... 23, 2017 , ... David Nolte, PhD accepted Purdue University’s ... Purdue Research Park of West Lafayette, Indiana. , The top commercialization award ... and success with, commercializing discoveries from Purdue research. “This award is truly an ...
(Date:2/23/2017)... , Feb. 23, 2017 Aviva Systems ... announced the acquisition of GenWay Biotech Incorporated, a ... service and product offering for both the research ... facilitate growth and enhance capabilities for both entities. GenWay,s ... ELISA assays will nicely complement ASB,s objective to ...
(Date:2/22/2017)... ... February 22, 2017 , ... ... Kendall Research Systems, LLC (KRS) clinical development program. KRS is a ... technology for research and clinical applications. The terms of the transaction were not ...
(Date:2/22/2017)... (PRWEB) , ... February 22, ... ... Collaborative (TOPEC), the leading medical education provider of women’s health, primary ... by the Accreditation Council for Continuing Medical Education (ACCME). ACCME’s Accreditation with ...
Breaking Biology Technology: