Featured Research

from universities, journals, and other organizations

Israeli Scientists Block The Progression Of Type I Diabetes

Date:
November 27, 2001
Source:
Weizmann Institute
Summary:
A team of researchers led by Prof. Irun Cohen of the Weizmann Institute of Science has developed a unique approach for halting the progression of Type I (juvenile or insulin-dependent) diabetes. Cohen and Dr. Dana Elias (then a postdoctoral fellow at the Institute) discovered that injecting mice with a small peptide fragment known as p277 prevents the progression of Type I diabetes.

Rehovot, Israel (November 26, 2001) -- A team of researchers led by Prof. Irun Cohen of the Weizmann Institute of Science has developed a unique approach for halting the progression of Type I (juvenile or insulin-dependent) diabetes. Cohen and Dr. Dana Elias (then a postdoctoral fellow at the Institute) discovered that injecting mice with a small peptide fragment known as p277 prevents the progression of Type I diabetes. Based on the results of his research, Peptor, a biopharmaceutical company from Rehovot, Israel, developed DiaPep277, an experimental drug designed to prevent or treat Type I diabetes.

Related Articles


A recent clinical study performed by researchers at Hadassah-Hebrew University Medical School and Peptor Ltd. proved that DiaPep277 is successful in arresting the progression of Type I diabetes in newly diagnosed patients. The research findings are published in the November 24, issue of The Lancet.

The study was of 35 patients newly diagnosed with Type I diabetes. Eighteen patients received injections of DiaPep277 at the beginning of the study, at one month, and at six months; 17 patients received three injections of an inert substance (placebo). Patients in the treatment group (those receiving DiaPep277) showed a halt or delay in the attack upon, or destruction of their pancreatic insulin-producing cells by the immune system. These results were evident in the level of the body’s own insulin production and in a decreased need for insulin injections. The researchers were able to trace the mechanism of this improvement to changes in the patients’ immune lymphocytes called T-cells. In contrast, patients receiving the placebo showed a significant decline in their natural insulin production and a persistent rise in the need for insulin injections. No significant side effects as a result of injecting DiaPep277 were found.

Diabetes is a chronic disease associated with elevated blood sugar levels, in which the body does not produce or properly use insulin - a hormone needed to convert sugar, starches and other foods into energy. Recent data show that between 120 and 140 million people suffer from diabetes worldwide.

Type I (insulin-dependent) diabetes usually results from an autoimmune disorder in which the immune system mistakenly attacks the body’s own insulin-producing pancreatic cells, reducing and ultimately eliminating all insulin production. In contrast, Type II diabetes is a metabolic disorder resulting from the body’s inability to properly use insulin. All Type I diabetes patients (and the more severe Type II cases) must supplement their natural insulin production with insulin injections.

For the past several years, researchers at the Weizmann Institute’s Department of Immunology led by Professor Cohen have been studying the mechanism by which the immune system destroys the insulin-producing pancreatic cells. Working with mice, the scientists discovered that a particular protein called HSP60 was closely linked to this destructive process. The protein acts like an antigen, prompting the immune cells to attack. Further investigation revealed that injecting sick mice with p277 - a small peptide fragment of the HSP60 protein - shut down the immune response, preventing the progression of Type I diabetes. “The peptide essentially acts to “reeducate” the immune cells, switching off their destructive activity,” Cohen explains. “The idea for using p277 stemmed from the discovery that the immune system has different options to choose from in responding to an antigen. It can act to destroy the antigen or alternatively protect it from destruction. In this case it indirectly prevents the pancreatic cells from being destroyed.”

The scientists participating in this study are: Professor Itamar Raz and Dr. Muriel Metzger from Hadassah-Hebrew University Medical School, Dr. Dana Elias (now VP R&D at Peptor Ltd.), Dr. Ann Avron, and Dr. Merana Tamir from Peptor Ltd.

Donor support: The Robert Koch Minerva Center for Research in Autoimmune Disease, the Yeshaya Horowitz Association and Mr. and Mrs. Samuel Theodore Cohen of Chicago, Il. Prof. Cohen is the incumbent of the Helen and Morris Mauerberger Professorial Chair in Immunology.

The Weizmann Institute of Science, in Rehovot, Israel, is one of the world’s foremost centers of scientific research and graduate study. Its 2,500 scientists, students, technicians and engineers pursue basic research in the quest for knowledge and to enhance the quality of human life. New ways of fighting disease and hunger, protecting the environment, and harnessing alternative sources of energy are high priorities at Weizmann.


Story Source:

The above story is based on materials provided by Weizmann Institute. Note: Materials may be edited for content and length.


Cite This Page:

Weizmann Institute. "Israeli Scientists Block The Progression Of Type I Diabetes." ScienceDaily. ScienceDaily, 27 November 2001. <www.sciencedaily.com/releases/2001/11/011127005102.htm>.
Weizmann Institute. (2001, November 27). Israeli Scientists Block The Progression Of Type I Diabetes. ScienceDaily. Retrieved October 24, 2014 from www.sciencedaily.com/releases/2001/11/011127005102.htm
Weizmann Institute. "Israeli Scientists Block The Progression Of Type I Diabetes." ScienceDaily. www.sciencedaily.com/releases/2001/11/011127005102.htm (accessed October 24, 2014).

Share This



More Health & Medicine News

Friday, October 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
WHO: Millions of Ebola Vaccine Doses by 2015

WHO: Millions of Ebola Vaccine Doses by 2015

AP (Oct. 24, 2014) The World Health Organization said on Friday that millions of doses of two experimental Ebola vaccines could be ready for use in 2015 and five more experimental vaccines would start being tested in March. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Doctor in NYC Quarantined With Ebola

Doctor in NYC Quarantined With Ebola

AP (Oct. 24, 2014) An emergency room doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus. He's quarantined in a hospital. (Oct. 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins