SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Li Wen Jun)
 

Sökning: WFRF:(Li Wen Jun) > (2007-2009) > MEK1/2 regulates mi...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00002892naa a2200373 4500
001oai:DiVA.org:umu-22394
003SwePub
008090507s2007 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-223942 URI
040 a (SwePub)umu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Yu, Ling-Zhu4 aut
2451 0a MEK1/2 regulates microtubule organization, spindle pole tethering and asymmetric division during mouse oocyte meiotic maturation.
264 1c 2007
338 a print2 rdacarrier
520 a It is well known that MAPK plays pivotal roles in oocyte maturation, but the function of MEK (MAPK kinase) remains unknown. We have studied the expression, subcellular localization and functional roles of MEK during meiotic maturation of mouse oocytes. Firstly, we found that MEK1/2 phoshorylation (p-MEK1/2, indicative of MEK activation) was low in GV (germinal vesicle) stage, increased 2h after GVBD (germinal vesicle breakdown), and reached the maximum at metaphase II. Secondly, we found that P-MEK1/2 was restricted in the GV prior to GVBD. In prometaphase I and metaphase I, P-MEK1/2 was mainly associated with the spindle, especially with the spindle poles. At anaphase I and telophase I, p-MEK1/2 became diffusely distributed in the region between the separating chromosomes, and then became associated with the midbody. The association of p-MEK1/2 with spindle poles was further confirmed by its colocalization with the centrosomal proteins, gamma-tubulin and NuMA. Thirdly, we have investigated the possible functional role of MEK1/2 activation by intravenous administration and intrabursal injection of a specific MEK inhibitor, U0126, and by microinjection of MEK siRNA into oocytes. All these manipulations cause disorganized spindle poles and spindle structure, misaligned chromosomes and larger than normal polar bodies. Our results suggest that MEK1/2 may function as a centrosomal protein and may have roles in microtubule organization, spindle pole tethering and asymmetric division during mouse oocyte maturation.
700a Xiong, Bo4 aut
700a Gao, Wen-Xue4 aut
700a Wang, Chun-Min4 aut
700a Zhong, Zhi-Sheng4 aut
700a Huo, Li-Jun4 aut
700a Wang, Qiang4 aut
700a Hou, Yi4 aut
700a Liu, Kuiu Umeå universitet,Institutionen för medicinsk kemi och biofysik4 aut0 (Swepub:umu)kuli0001
700a Liu, X Johné4 aut
700a Schatten, Heide4 aut
700a Chen, Da-Yuan4 aut
700a Sun, Qing-Yuan4 aut
710a Umeå universitetb Institutionen för medicinsk kemi och biofysik4 org
773t Cell cycle (Georgetown, Tex.)g 6:3, s. 330-8q 6:3<330-8x 1551-4005
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-22394

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy