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Sa3dy الخميس أغسطس 26, 2010 6:33 amاكتشاف الجين المسئول عن تجدد الخلايا والأعضاء
لكن العلماء الدكتور عزيز أبوبكر والزملاء الباحثين إستخداموا planaria (الديدان) كمصدر لأبحاثهم.
ويقولون ان الديدان سوف تلعب دورا في فهم الخلايا الجذعية ، مما يؤدى إلى التطورات في الطب البشري وإطالة العمر.
ويقول عزيز إن الديدان وخاصة planaria لديهم نسبة عالية من الخلايا الجذعية البالغة ، مما يجعلها "خالدة" .
"ممر صغير خلف المركز الطبي كوينز يبدو ضعيف.
ويقول "أروع شيء هو أننا يمكن أن نجلب دودة إلى المختبر ثم نقطع
رأسها باتجاه آخر ، وخلال سبعة أيام دودة نمت الرأس كاملة و المخ من
جديد "، .
A flatworm up close and personal
"That's an incredible thing.
"The brain even in a simple worm like that is incredibly complex
with thousands of cells that all have to be in the right place and all
know what they're doing.
"And don't worry about the head (that was chopped off), it just re-grows a new tail and crawls off."
It is hoped understanding these powers of regeneration in flatworms will lead to breakthroughs with human stem cells.
Adult human stem cells are limited compared to their worm counterparts.
Aziz and his worms >
Aziz explains: "If you make a small wound in (human) skin, sure we can cope with that.
"But if we lose a whole piece of tissue, like an organ or limb, we don't know how to (re-grow) that.
On a worm hunt!
"That's one of the reasons we are so interested in the flatworms, because they've figured out how to do that."
'Really cute'
Planaria are common and Aziz's team regularly take them from the sewage outlet at the QMC because it's convenient.
However many other flatworms used for their research are shipped from Spain.
So how does Aziz feel about working with the tiny creatures?
"They're really cute," he says.
"They have big cartoon character eyes and they're easy to look after - and they don't die."
لكن العلماء الدكتور عزيز أبوبكر والزملاء الباحثين إستخداموا planaria (الديدان) كمصدر لأبحاثهم.
ويقولون ان الديدان سوف تلعب دورا في فهم الخلايا الجذعية ، مما يؤدى إلى التطورات في الطب البشري وإطالة العمر.
ويقول عزيز إن الديدان وخاصة planaria لديهم نسبة عالية من الخلايا الجذعية البالغة ، مما يجعلها "خالدة" .
"ممر صغير خلف المركز الطبي كوينز يبدو ضعيف.
ويقول "أروع شيء هو أننا يمكن أن نجلب دودة إلى المختبر ثم نقطع
رأسها باتجاه آخر ، وخلال سبعة أيام دودة نمت الرأس كاملة و المخ من
جديد "، .
A flatworm up close and personal
"That's an incredible thing.
"The brain even in a simple worm like that is incredibly complex
with thousands of cells that all have to be in the right place and all
know what they're doing.
"And don't worry about the head (that was chopped off), it just re-grows a new tail and crawls off."
It is hoped understanding these powers of regeneration in flatworms will lead to breakthroughs with human stem cells.
Adult human stem cells are limited compared to their worm counterparts.
Aziz and his worms >
Aziz explains: "If you make a small wound in (human) skin, sure we can cope with that.
"But if we lose a whole piece of tissue, like an organ or limb, we don't know how to (re-grow) that.
On a worm hunt!
"That's one of the reasons we are so interested in the flatworms, because they've figured out how to do that."
'Really cute'
Planaria are common and Aziz's team regularly take them from the sewage outlet at the QMC because it's convenient.
However many other flatworms used for their research are shipped from Spain.
So how does Aziz feel about working with the tiny creatures?
"They're really cute," he says.
"They have big cartoon character eyes and they're easy to look after - and they don't die."