Navigation Links
New anticoagulant discovered based on the same used by malaria vectors to feed on
Date:12/11/2012

An international project lead by the Molecular and Cell Biology Institute of Porto University with the participation of researchers from IMIM (Hospital del Mar Medical Research Institute) has, for the first time ever, deciphered the mechanism by which a substance called anophelin binds to an enzyme (thrombin) involved in the process of blood coagulation. This discovery was published in the last issue of the PNAS journal and opens the door to, on the one hand, designing a new generation of anticoagulant drugs with a totally different functioning to current ones and, on the other hand, fighting against the spreading of malaria by designing inhibitors for this substance.

Anophelin is a substance playing a crucial role in the nutrition of a large number of parasites like malaria-carrying Anopheles mosquitoes or vampire bats. These animals need to feed on fresh blood and stop it from coagulating while they are eating. To make this possible, they use powerful inhibitors of the coagulation process mainly affecting thrombin. Researchers have discovered that "anophelin blocks thrombin in a new and different way than other substances: it's like a key fitting in a lock of a door, but in this case the key fits in the other side" explains Ricardo Gutirrez Gallego, a member of the IMIM Bioanalysis research group.

The project is based on two recent studies which led to the discovery of thrombin inhibitors presenting new structures. For the inhibitor produced by Anopheles mosquitoes (anophelin), it was seen that after binding to thrombin, proteins did not degrade, so a systematic study was launched for all coagulants in the several variants of the Anopheles mosquito. By using very powerful and sensitive analytical techniques it was possible to determine and monitor in real time the molecule interactions in both anophelin and thrombin, leading to a detailed characterization of their structure and interaction. Researchers also performed mutations on this protein, i.e. they changed the amino acid at each time, so as to discover the crucial components of the molecule when it interacted with thrombin.

Blood coagulation is a complex mechanism to prevent bleeding after an injury. However, in some cases, the formation of blood clots can lead to a myocardial infarction, a cerebral infarction etc. In these cases, administering anticoagulants is essential. Anticoagulants are drugs that prevent blood from coagulating, thus avoiding cardiovascular events, which are the leading cause of death in Spain. In recent years, one of the most active fields of research has been the search for the ideal anticoagulant since the ones available today may have side effects and must be administered under strict medical control. "The discovery of this new interaction could be useful in the future to create new generation anticoagulant drugs that improve these aspects and also to fight against the spreading of malaria" concludes Dr. Gutirrez Gallego.


'/>"/>

Contact: Marta Calsina
mcalsina@imim.es
34-933-160-680
IMIM (Hospital del Mar Medical Research Institute)
Source:Eurekalert

Related biology news :

1. Global Market for Blood Banking and Blood Products Projected to reach $43 billion by 2018; Spectrometers and Fluorometers to Reach $18.4 bn; Anticoagulants to Reach $12.9 bn; Cell and Tissue Culture Supplies to Reach $5.6 bn
2. Hearty organisms discovered in bitter-cold Antarctic brine
3. Microbial missing link discovered after man impales hand on tree branch
4. Newly discovered effects of vitamin D on cancer
5. Missing link discovered in the defence mechanism of the tuberculosis pathogen
6. New cause of thyroid hormone deficiency discovered
7. Undersea gas leaks off Israels coast are discovered by University of Haifa researchers
8. Sweet new approach discovered to help produce metal casting parts, reduce toxicity
9. 9 colorful and endangered tree-dwelling tarantulas discovered in Brazil
10. New genes discovered for adult BMI levels
11. Living power cables discovered
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/22/2016)... ANGELES , June 22, 2016 /PRNewswire/ ... identity management and verification solutions, has partnered ... edge software solutions for Visitor Management, Self-Service ... provides products that add functional enhancements ... partnership provides corporations and venues with an ...
(Date:6/15/2016)... New York , June 15, 2016 /PRNewswire/ ... a new market report titled "Gesture Recognition Market by ... and Forecast, 2016 - 2024". According to the report, ... USD 11.60 billion in 2015 and is estimated ... reach USD 48.56 billion by 2024.  ...
(Date:6/2/2016)... LONDON , June 2, 2016 ... has awarded the 44 million US Dollar project, ... Security Embossed Vehicle Plates including Personalization, Enrolment, and IT Infrastructure ... world leader in the production and implementation of Identity Management ... in January, however Decatur was selected ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the ... at the Arkansas State Crime Laboratory, has joined STACS DNA as a Field Application ... team,” said Jocelyn Tremblay, President and COO of STACS DNA. “In further expanding our ...
(Date:6/23/2016)... June 23, 2016 Apellis Pharmaceuticals, Inc. ... clinical trials of its complement C3 inhibitor, APL-2. ... multiple ascending dose studies designed to assess the ... subcutaneous injection in healthy adult volunteers. ... as a single dose (ranging from 45 to ...
(Date:6/23/2016)... 2016 Andrew D ... http://doi.org/10.17925/OHR.2016.12.01.22 Published recently in ... from touchONCOLOGY, Andrew D Zelenetz , discusses ... care is placing an increasing burden on healthcare ... therapies. With the patents on many biologics expiring, ...
(Date:6/23/2016)... ... June 23, 2016 , ... ClinCapture, the only free validated ... will showcase its product’s latest features from June 26 to June 30, 2016 ... on Disrupting Clinical Trials in The Cloud during the conference. DIA (Drug ...
Breaking Biology Technology: