Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New drugs in the pipeline for public health diseases

17.11.2005


Swedish chemists synthesizing substances for blood clots, malaria, and hepatitis C.



Chemists at Linköping University in Sweden have developed three types of molecules, protease inhibitors, that can be further developed into drugs for cardiovascular diseases, malaria, and hepatitis C.

Proteases are a group of enzymes that play a major role in the course of certain diseases. If there is a molecule present that prevents the protease from working, the disease can be cured. Such substances are called inhibitors and are already in use in many drugs today.


Per-Ola Johansson, a doctoral candidate in organic chemistry, describes in his dissertation the synthesis of such protease inhibitors, designed for potential use in combating three different diseases: cardiovascular diseases (to prevent the formation of blood clots), malaria, and chronic jaundice of the type hepatitis C.

Thrombin is a protease that plays a key role when blood coagulates. In some individuals this process is hyperactive, which can lead to the formation of blood clots. The research team at Linköping University has synthesized a series of molecules that inhibit the activity of thrombin in varying degrees. The most active of these molecules give an indication of how to go about creating the optimal thrombin inhibitor to develop a functioning drug.

Malaria, which affects some 500 million people annually, killing nearly 2 million of them, is caused by a single-cell parasite that breaks down the hemoglobin in red blood corpuscles. For tools, the parasite makes use of a number of different protease enzymes. The research team has developed a large number of molecules that inhibit the activity of two of these, plasmepsin I and II. Some of these inhibitors have proven to be extremely effective and could be optimized to become a powerful new malaria drug.

Hepatitis C is caused by the virus HCV. When it proliferates, HCV forms a chain-shaped molecule that is cut in smaller pieces by various protease enzymes, and these pieces then build up new virus particles. The team has synthesized a series of inhibitors of NS3, one of the most important of these enzymes.

This work has been carried out under the supervision of Professor Ingemar Kvarnström, Professor Bertil Samuelsson, and Åsa Rosenquist, Ph.D., and in collaboration with the pharmaceutical companies Medivir and Astra Zeneca.

The dissertation is titled Design and synthesis of inhibitors that target the serine protease thrombin, the malarial aspartyl proteases plasmepsin I and II, and the hepatitis C virus NS3 serine protease.

Åke Hjelm | alfa
Further information:
http://www.liu.se

More articles from Life Sciences:

nachricht New photocatalyst speeds up the conversion of carbon dioxide into chemical resources
29.05.2017 | DGIST (Daegu Gyeongbuk Institute of Science and Technology)

nachricht Copper hydroxide nanoparticles provide protection against toxic oxygen radicals in cigarette smoke
29.05.2017 | Johannes Gutenberg-Universität Mainz

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Strathclyde-led research develops world's highest gain high-power laser amplifier

The world's highest gain high power laser amplifier - by many orders of magnitude - has been developed in research led at the University of Strathclyde.

The researchers demonstrated the feasibility of using plasma to amplify short laser pulses of picojoule-level energy up to 100 millijoules, which is a 'gain'...

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

New insights into the ancestors of all complex life

29.05.2017 | Earth Sciences

New photocatalyst speeds up the conversion of carbon dioxide into chemical resources

29.05.2017 | Life Sciences

NASA's SDO sees partial eclipse in space

29.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>