Nobel Prize in Physiology or Medicine 2009

"For the discovery of how chromosomes are protected by telomeres and the enzyme telomerase"

Won by..,

Elizabeth H. Blackburn, Carol W. Greider and Jack W. Szostak


This year's Nobel Prize in Physiology or Medicine is awarded to three scientists who have solved a major problem in biology: how the chromosomes can be copied in a complete way during cell divisions and how they are protected against degradation.

They have shown that the solution is to be found in the ends of the chromosomes – the telomeres – and in an enzyme that forms them – telomerase.

The long, thread-like DNA molecules that carry our genes are packed into chromosomes, the telomeres being the caps on their ends. Elizabeth Blackburn and Jack Szostak discovered that a unique DNA sequence in the telomeres protects the chromosomes from degradation.


Carol Greider and Elizabeth Blackburn identified telomerase, the enzyme that makes telomere DNA. These discoveries explained how the ends of the chromosomes are protected by the telomeres and that they are built by telomerase.


If the telomeres are shortened, cells age. Conversely, if telomerase activity is high, telomere length is maintained, and cellular senescence is delayed. This is the case in cancer cells, which can be considered to have eternal life. Certain inherited diseases, in contrast, are characterized by a defective telomerase, resulting in damaged cells.

The award of the Nobel Prize recognizes the discovery of a fundamental mechanism in the cell, a discovery that has stimulated the development of new therapeutic strategies.




Jack Szostak Elizabeth Blackburn Carol W. Greider

Dilshan awarded the T20 cricketer of the year

by sopphrano

Tillakarathna Dilshan has won the award for the best Twenty20 performer of the year at the ICC cricket awards 2009, held on the 1st of october. He has won the Twenty20 International Performance of the Year award in recognition of his breezy 96 off 57 balls against West Indies in the semi-final of the 2009 World Twenty20 in England. Dilshan's performance at The Oval included two sixes and 12 fours and helped steer his side into the finals of the tournament.

This is the second year the award has been given to recognise the most impressive performance by a player in Twenty20 internationals during the 12-month voting period, continuing to mark the advent of the shortest format of the game.

The award rounds off a good year of Twenty20 cricket for Dilshan who took the World Twenty20 by storm after showcasing his astonishing 'Dilscoop' - a flick-shot over his head - and also being named as Player of the Tournament, having scored 317 runs at 52.83.

According to the ICC Awards 25-member voting academy Dilshan's effort was the most impressive in the voting period between August 13, 2008 to August 24, 2009.

His performance beat competition from West Indies' Chris Gayle for his 88 off 50 balls against Australia, also during the 2009 World Twenty20 at The Oval; Umar Gul's 5 for 6 for Pakistan against New Zealand in the same tournament, as well as twin efforts from Shahid Afridi - a blitzkreig 51 off 34 balls and 2 for 16 against South Africa in the semi-final.

Collecting his award from last year's winner, Yuvraj Singh, Dilshan said: "This is a great feeling for me. I can't forget about that innings - it was so important and I was really happy about my overall performance in that tournament. It was a thrill for me to do well in England and do well for my team.

"I'm really proud of myself for having a new shot named after me (the Dilscoop). That shot has given me confidence. If I am under pressure I can play that shot and put the pressure back on the bowlers."