Expression of Bcl-2 Protects against Photoreceptor Degeneration in retinal degeneration slow (rds) Mice

Expression of Bcl-2 Protects against Photoreceptor Degeneration in retinal degeneration slow (rds) Mice
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Bcl-2 的表达可防止视网膜变性慢 (rds) 小鼠的感光器变性

DOI:
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发表时间:
2000
影响因子:
5.3
通讯作者:
G. Travis
G. Travis
中科院分区:
医学1区
文献类型:
--
作者:
I. Nir;W. Kedzierski;Jeannie Chen;G. Travis

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视网膜变性缓慢或rds基因编码rds/外周蛋白,这是一种完整的膜糖蛋白,位于杆状和锥状光感受器的外段。rds中零突变的纯合小鼠不能发育外段,并通过凋亡途径经历随后的光感受器变性。人类RDS基因的突变是几种遗传性失明的原因,包括常染色体显性视网膜色素变性和黄斑变性。在这里,我们研究了转基因光感受器中异位Bcl-2表达对rds突变小鼠视网膜变性率的影响。我们观察到,在3个月时,与非转基因rds突变小鼠相比,光感受器的保存大约是其两倍。免疫印迹分析显示,2、3、4周龄转基因小鼠中Bcl-2水平相似。Bcl-2在大鼠体内的表达不会导致外节的形成,也不会导致细胞死亡。这些结果表明,Bcl-2表达可能是一种有效的治疗策略,可以治疗rds或其他影响光感受器外段完整性的基因突变。
The retinal degeneration slow or rdsgene encodes rds/peripherin, an integral membrane glycoprotein in the outer segments of rod and cone photoreceptors. Mice homozygous for a null mutation in rds fail to develop outer segments and undergo subsequent degeneration of photoreceptors by the apoptotic pathway. Mutations in the human RDS gene are responsible for several forms of inherited blindness including autosomal-dominant retinitis pigmentosa and macular degeneration. Here, we examined the effects of ectopic Bcl-2 expression in transgenic photoreceptors on the rate of retinal degeneration in rds mutant mice. We observed an approximately twofold preservation of photoreceptors compared with nontransgenic rds mutant mice at 3 months. Immunoblot analysis showed similar levels of Bcl-2 in 2-, 3-, and 4-week-old transgenic mice. Expression of Bcl-2 in therds mouse did not lead to outer segment formation and did not induce cell death. These results suggest that Bcl-2 expression may be an effective therapeutic strategy in humans with mutations inRDS or other genes that affect the integrity of photoreceptor outer segments.
DOI: --
发表时间: 1994-05
影响因子: 4.4
作者:
M. Tso;Chang Zhang;A. Abler;Cheng‐Jong Chang;F. Wong;G. Chang;T. Lam
通讯作者: M. Tso;Chang Zhang;A. Abler;Cheng‐Jong Chang;F. Wong;G. Chang;T. Lam
rds 突变小鼠视网膜光感受器内节和睫状质膜中视蛋白的免疫细胞化学定位。
DOI: --
发表时间: 1986
影响因子: 4.4
作者:
Nir,I;Papermaster,DS
通讯作者: Papermaster,DS
DOI: --
发表时间: 1996-05
期刊: Research communications in molecular pathology and pharmacology
影响因子: --
作者:
A. Abler;Cheng‐Jong Chang;J. Ful;M. Tso;T. Lam
通讯作者: A. Abler;Cheng‐Jong Chang;J. Ful;M. Tso;T. Lam
DOI: --
发表时间: 1996-11
影响因子: 4.4
作者:
R. M. Joseph;T. Li
通讯作者: R. M. Joseph;T. Li
DOI: 10.1073/pnas.91.3.974
发表时间: 1994-02-01
影响因子: 11.1
作者:
PORTERACAILLIAU, C;SUNG, CH;ADLER, R
通讯作者: ADLER, R