Truncated forms of Pax-6 disrupt lens morphology in transgenic mice.

作者: Ales Cvekl , Melinda K. Duncan , Joram Piatigorsky , Xuan Li

DOI:

关键词: CataractsTransfectionRatónLens FiberCrystallinPhenotypeCell biologyBiologyPathologyChinese hamster ovary cellGenetically modified mouse

摘要: RESULTS. Two lines of PD 1 HD mice and three were generated, all which exhibit posterior nuclear and/or cortical cataracts variable severity. The lenses from transgenic for either Pax-6 truncation are smaller more hydrated than normal. Morphologically, the expressing have swollen lens fibers with attenuated ball-and-socket junctions. In contrast, overexpressing composed cell debris, whereas remaining fiber cells appear generally CONCLUSIONS. presence truncated protein in is sufficient to induce cataract a wild-type genetic background. simplest explanation this phenomenon dominant‐ negative effect; however, number other possible mechanisms presented. (Invest Ophthalmol Vis Sci. 2000;41:464 ‐ 473)

参考文章(48)
B M Koroma, O H Sundin, J M Yang, The Pax-6 homeobox gene is expressed throughout the corneal and conjunctival epithelia. Investigative Ophthalmology & Visual Science. ,vol. 38, pp. 108- 120 ,(1997)
Ales Cvekl, John N. Brady, Joram Piatigorsky, Fatah Kashanchi, Pax-6 interactions with TATA-box-binding protein and retinoblastoma protein. Investigative Ophthalmology & Visual Science. ,vol. 40, pp. 1343- 1350 ,(1999)
L L David, T R Shearer, K R Hightower, Regional Distribution of Free Calcium in Selenite Cataract: Relation to Calpain II Investigative Ophthalmology & Visual Science. ,vol. 28, pp. 1702- 1706 ,(1987)
L L David, T R Shearer, M Azuma, Cataract and the acceleration of calpain-induced beta-crystallin insolubilization occurring during normal maturation of rat lens. Investigative Ophthalmology & Visual Science. ,vol. 35, pp. 785- 793 ,(1994)
Noriyuki Azuma, Yoshihiro Hotta, Hisako Tanaka, Masao Yamada, Missense mutations in the PAX6 gene in aniridia. Investigative Ophthalmology & Visual Science. ,vol. 39, pp. 2524- 2528 ,(1998)
J R Reddan, J Graw, R A Quinlan, R C Augusteyn, P Russell, E Krausz, C M Sax, Expression of Crystallins, Pax6, Filensin, CP49, MIP, and MP20 in lens-derived cell lines. Investigative Ophthalmology & Visual Science. ,vol. 37, pp. 2120- 2128 ,(1996)
Karl Theiler, Don S. Varnum, Leroy C. Stevens, Development of Dickie's small eye, a mutation in the house mouse Anatomy and Embryology. ,vol. 155, pp. 81- 86 ,(1979) , 10.1007/BF00315732
Sanjaya Singh, Hank Kejun Tang, Jing-Yu Lee, Grady F. Saunders, Truncation Mutations in the Transactivation Region of PAX6 Result in Dominant-Negative Mutants Journal of Biological Chemistry. ,vol. 273, pp. 21531- 21541 ,(1998) , 10.1074/JBC.273.34.21531
Ale? Cvekl, Joram Piatigorsky, Lens development and crystallin gene expression: many roles for Pax-6 BioEssays. ,vol. 18, pp. 621- 630 ,(1996) , 10.1002/BIES.950180805
S. Ry Andersen, P. Geertinger, H.-W. Larsen, M. Mikkelsen, A. Parving, S. Vestermark, M. Warburg, Aniridia, Cataract and Gonadoblastoma in a Mentally Retarded Girl with Deletion of Chromosome 11 Ophthalmologica. ,vol. 176, pp. 171- 177 ,(1978) , 10.1159/000308711