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Analysis microRNA by Reverse Transcription

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biooil, 30.08.2008 21:51
Здравствуйте, хотел поинтересоваться пробовал ли кто-нибудь анализировать микроРНК методом обратной транскрипции,?
Основная трудность у меня заключается в создании праймеров для исследования miR398 a,b,c.
Подскажите каким софтом лучше пользоваться, если кто-нибудь работал и делал что-то подобное прошу поделитесь опытом и прописями, для меня это новая область мало что известно...
заранее безгранично благодарен, не бейте если что не так smile.gif
Derro, 31.08.2008 22:05
На самом деле ничего страшного тут нет. Я из любопытства разок попробовал - получилось. Софт не поможет, праймеры для обратной транскрипции, адаптор (для больше длины ампликона) и праймеры для ПЦР необходимо подбирать вручную. Следите за тем, чтобы РНК была полностью очищена, а также проверьте miR на наличие гомологий среди РНК. И вперед.
biooil, 01.09.2008 01:04
Скажите, многоуважаемый Derro, а Вы именно microRNA определяли?
Каким методом выделения RNA Вы пользовались?
Как можно без софта понять гомологична моя microRNA или нет?
Derro, 01.09.2008 17:30
определить гомологию без софта сложно. Я говорил про подбор праймеров. Я выделял РНК четырьмя методами: киты от киагена, тризол и Хомчинский. Плюс-минус идет везде.
biooil, 02.09.2008 02:00
Спсибо за подсказки.
Ещё есть небольшой вопрос.
Например у меня есть известная последовательность mRNA и в ней есть известная последовательность моей microRNA, но так как я буду делать обратную транскрипцию значит мне необходимо последовательность mRNA превратить в cDNA и уже к этой последовательности искать праймеры, правильно я понял?
Guest, 02.09.2008 09:56
(biooil @ 02.09.2008 01:00)
Ссылка на исходное сообщение  Спсибо за подсказки.
Ещё есть небольшой вопрос.
Например у меня есть известная последовательность mRNA и в ней есть известная последовательность моей microRNA, но так как я буду делать обратную транскрипцию значит мне необходимо последовательность mRNA превратить в cDNA и уже к этой последовательности искать праймеры, правильно я понял?

http://www.pubmedcentral.nih.gov/picrender...95&blobtype=pdf
guest: solian , 02.09.2008 11:13
Привет, ОТ-ПЦР, насколько я понимаю, грубоват, и не позволит показать небольшую разницу в экспрессии, тем более если копийность итерисующей мир в ткани низкая, вы посмотрете может она там вообще не экспрессируеться ;-), нет плохо работает, на скорее всего эта мир оносится к семейству где разница между мир в 1 нуклеодит, так что ваши праймеры могут "ловить" всех членов семейства. Результат использовани таких праймеров может вызвать сомнения, если только не показать их 99% специфичность на определенную мир, и если адекватно сработают (-) и (+) контроли. ))))
Денис.
biooil, 02.09.2008 14:18
Да ОТ-ПЦР грубый метод, но к сожалению сейчас приходится работать именно таким методом. Денис, скажите как можно показать 99% специфичность на мою miR и как лучше сделать + - контроли ?, пока мне сложно понять как это будет работать. По мере продвижения эксперимента буду обязательно публиковать свои результаты на этой страничке.
Guest, 02.09.2008 14:59
(biooil @ 02.09.2008 01:00)
Ссылка на исходное сообщение  Спсибо за подсказки.
Ещё есть небольшой вопрос.
Например у меня есть известная последовательность мРНА и в ней есть известная последовательность моей мицроРНА, но так как я буду делать обратную транскрипцию значит мне необходимо последовательность мРНА превратить в цДНА и уже к этой последовательности искать праймеры, правильно я понял?


обратную транскрипцию на микру-РНК длинной 21нт smile.gif
Nameless, 04.09.2008 20:42
Можно заказать такманскую пробу.
solian, 10.09.2008 14:32
to Namelles
если люди подходят с такого "конца"
300-350 баков на контроль и их мир сеты тратить ....

Solian
biooil, 11.09.2008 10:54
(guest: solian @ 02.09.2008 11:13)
Ссылка на исходное сообщение  Привет, ОТ-ПЦР, насколько я понимаю, грубоват, и не позволит показать небольшую разницу в экспрессии, тем более если копийность итерисующей мир в ткани низкая, вы посмотрете может она там вообще не экспрессируеться ;-), нет плохо работает, на скорее всего эта мир оносится к семейству где разница между мир в 1 нуклеодит, так что ваши праймеры могут "ловить" всех членов семейства. Результат использовани таких праймеров может вызвать сомнения, если только не показать их 99% специфичность на определенную мир, и если адекватно сработают (-) и (+) контроли. ))))
Денис.

Денис, не могу Вам отправиль личку что-то с форумом.
пишите на почту
biomaquinademuerte@gmail.com с уважение Павел!
Guest, 02.10.2008 14:58
(biooil @ 30.08.2008 20:51)
Ссылка на исходное сообщение  Здравствуйте, хотел поинтересоваться пробовал ли кто-нибудь анализировать микроРНК методом обратной транскрипции,?
Основная трудность у меня  заключается в создании праймеров для исследования миР398 а,б,ц.
Подскажите каким софтом лучше пользоваться, если кто-нибудь работал и делал что-то подобное прошу поделитесь опытом и прописями, для меня это новая область мало что известно...
заранее безгранично благодарен, не бейте если что не так smile.gif


тут метода с доращиванием микр полиаденелированием
http://www.plosone.org/article/info:doi/10...al.pone.0003148
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