2017年2月6日星期一

Scientists are trying to push Porcn inhibitor as a regenerative agent for heart disease

Anticancer agents which are under development can promote the regeneration of damaged myocardium , and they may help to prevent congestive heart failure in the future. The results of the study have been published in the Proceedings of the National Academy of Sciences, which also publishes other studies on recombinant human proteins.

Dr. Lawrence Lum, associate professor of cell biology at UT Southwestern Medical Center, has been developing cancer drugs for Wnt signaling molecules for many years. These molecules are essential for tissue regeneration, but also often lead to cancer. What's crucially important for the production of the human Wnt protein is the porcupine (Porcn) enzyme, because Drosophila embryo lacking this gene is similar to Porcn. They were curious when testing Porcn inhibitors developed by the researchers.

"We saw a lot of predictable adverse effects in bone and hair, but one unexpected result was a slight increase in the number of split myocytes (cardiomyocytes)," said senior author Dr Lum. "In addition to a strong interest in Porcn inhibitors in anticancer agents, this study suggests that this agent can be used in regenerative medicine."

Based on their preliminary results, the researchers induced heart attacks in mice and then treated with Porcn inhibitors. Compared with untreated animals, their blood pumping capacity of the heart increased nearly twice. Dr. Rhonda Bassel-Duby, director of the Center for Regenerative Sciences and Medicine, professor of molecular biology and molecular biology, said, "Our laboratory has been studying cardiac repair for a few years. Surprisingly, the administration of Wnt inhibitors significantly improved mice Cardiac function after a heart attack."

Importantly, in addition to improving pumping capacity in mouse hearts, the researchers also noted a reduction in cardiac fibrosis or scarring. Collagen load scars that occur after a heart attack can lead to an undue increase in the size of the heart and lead to heart failure. "Although fibrotic reactions may be immediately beneficial, they may overwhelm the ability of the heart to regenerate over a long period of time, and we believe that we have a drug that can modulate this fibrosis response, thereby improving wound healing in the heart," said Dr. Murchison Linthicum, Harold C. Simmons Comprehensive Cancer Center, deputy director of basic research and a medical researcher.

In addition, Professor Lum said preliminary experiments showed that Porcn inhibitors only need to be used within a short time after a heart attack, suggesting that the unpleasant side effects which are usually caused by cancer drugs can be avoided. "We hope to push the Porcn inhibitor into clinical trials within the next year as a regenerative agent for heart disease," Dr. Lum said. Flarebio provides you with high-quality recombinant proteins including recombinant ITGB5.

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