LASER ABLATION OF GFP & ( TUBULIN LABELED CENTROSOMES IN SOMATIC CELLS
LASER ABLATION OF GFP & ( TUBULIN LABELED CENTROSOMES IN SOMATIC CELLS
批准号:
6119666
负责人:
Alexey L Khodjakov
金额:
$1.14万
依托单位:
依托单位国家:
美国
项目类别:
财政年份:
1999
资助国家:
美国
项目状态:
已结题
起止时间:
1999-01-01 至 1999-12-31
中文摘要
(由GMS R 01 40198向C. L.里德尔)我们最近
示范,?微管蛋白-GFP(?TGF β)融合蛋白特异性
标记并描绘中心体的边界,
活细胞使我们能够通过激光显微手术,
中心体在细胞周期的任何阶段。 正如我们已经
证明(下面的第一篇论文)的消失?TGF β信号
在激光操作过程中观察到的破坏对应于
中心体的辐射部分。 因此,可以消融
整个中心体的目标是所有的中心体相关的?TGFP
信号,或者只是它的一部分。这种新颖的方法提供了一种
令人兴奋和独特的机会,有选择地摧毁,第一,
时间,脊椎动物体细胞中的全部或部分中心体,
间期和有丝分裂。 我们目前的实验包括两个
主要的子项目第一个是阐明中心体在
纺锤体形成与维持
在脊椎动物体细胞的有丝分裂中。 为此,我们将使用
激光显微手术,专门破坏一个或两个
中心体在有丝分裂的各个阶段,从中前期到
后期 第二个是确定细胞是否启动和完成
DNA合成,和/或进行分裂,在破坏所有或只是
在细胞周期的不同时期的中心体的一部分。 这些
实验将揭示,如果没有中心体,或
在G1或G2中存在仅包含一个中心粒的中心体,
单个二倍体(即,G2中的母亲/女儿中心粒对),
抑制脊椎动物细胞周期的正常进程
体细胞 Khodjakov,A.,R.W.科尔和C. L.里德尔。 (晚
1997年)。 技术的协同作用:将激光显微手术与
绿色荧光蛋白标记。 细胞运动和细胞骨架
38:311-317 Khodjakov,A and C. L.里德尔。 1998年:《协同增效》
技术:结合激光显微手术和绿色荧光
蛋白GFP)-标记。 SPIE国际生物医学研讨会
光学(BIOS'98)技术 ABS. Digest pp. 156. Khodjakov,A.,R.W.
科尔和C. L.里德尔。 1998年:激光破坏一个中心体
在前期的显微手术下调了第二个的活性,
中心体并抑制纺锤体形成。 Molecular Biology of the
单元格(印刷中)
英文摘要
(Supported by GMS R01 40198 to C. L. Rieder) Our recent
demonstration that ?-tubulin-GFP (?TGFP) fusion protein specifically
labels and delineates the boundaries of the centrosome within in the
living cell allows us to reproducibly destroy, by laser microsurgery,
the centrosome at any stage of the cell cycle. As we have already
demonstrated (first paper below) the disappearance of ?TGFP signal
observed during the laser operation corresponds to destruction of the
irradiated part of the centrosome. As a result, one can ablate the
entire centrosome by targeting all of the centrosome-associated ?TGFP
signal, or just a part of it. This novel approach provides an
exciting and unique opportunity to selectively destroy, for the first
time, all or part of the centrosome in vertebrate somatic cells during
interphase and mitosis. Our current line of experiments includes two
major sub-projects The first is to clarify the role the centrosome in
spindle formation and maint enance
during mitosis in vertebrate somatic cells. To do this we will use
laser microsurgery to specifically destroy one or both of the
centrosomes at various stages of mitosis, from mid-prophase through
anaphase. The second is to determine if cells initiate and complete
DNA synthesis, and/or undergo division, after destroying all or just
part of the centrosome during different periods of cell cycle. These
experiments will reveal if the absence of a centrosome, or the
presence of a centrosome containing just one centriole in G1 or a
single diplosome (i.e., a mother/daughter centriole pair) in G2,
inhibits normal progression through the cell cycle in vertebrate
somatic cells. Khodjakov, A., R.W. Cole and C. L. Rieder. (late
1997). A synergy of technologies: combining laser microsurgery with
green fluorescent protein tagging. Cell Motility and the Cytoskeleton
38:311-317 Khodjakov, A and C. L. Rieder. (1998) A synergy of
technologies: Combining laser microsurgery with green fluorescent
protein GFP)-tagging. SPIE International Symposium on Biomedical
Optics (BIOS'98) Tech. Abs. Digest pp. 156. Khodjakov, A., R.W.
Cole and C. L. Rieder. (1998) Destruction of one centrosome by laser
microsurgery during prophase down-regulates the activity of the second
centrosome and inhibits spindle formation. Molecular Biology of the
Cell (in press)
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
Efficiency and fidelity in mitotic spindle assembly
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批准号:9892661
-
项目类别:
-
资助金额:$25.0万
-
财政年份:2019
-
负责人:Alexey L Khodjakov
-
依托单位:
Efficiency and fidelity in mitotic spindle assembly
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批准号:10582572
-
项目类别:
-
资助金额:$45.13万
-
财政年份:2019
-
负责人:Alexey L Khodjakov
-
依托单位:
Efficiency and fidelity in mitotic spindle assembly
-
批准号:10361458
-
项目类别:
-
资助金额:$45.13万
-
财政年份:2019
-
负责人:Alexey L Khodjakov
-
依托单位:
Efficiency and fidelity in mitotic spindle assembly
-
批准号:10117258
-
项目类别:
-
资助金额:$45.13万
-
财政年份:2019
-
负责人:Alexey L Khodjakov
-
依托单位:
Functional properties of centrosomes in somatic cells
-
批准号:7912058
-
项目类别:
-
资助金额:$11.73万
-
财政年份:2009
-
负责人:Alexey L Khodjakov
-
依托单位:
LASER ABLATION OF GFP & ( TUBULIN LABELED CENTROSOMES IN SOMATIC CELLS
-
批准号:6653381
-
项目类别:
-
资助金额:$29.46万
-
财政年份:2002
-
负责人:Alexey L Khodjakov
-
依托单位:
LASER ABLATION OF GFP & ( TUBULIN LABELED CENTROSOMES IN SOMATIC CELLS
-
批准号:6491864
-
项目类别:
-
资助金额:$29.46万
-
财政年份:2001
-
负责人:Alexey L Khodjakov
-
依托单位:
LASER ABLATION OF GFP & ( TUBULIN LABELED CENTROSOMES IN SOMATIC CELLS
-
批准号:6423447
-
项目类别:
-
资助金额:$29.46万
-
财政年份:2000
-
负责人:Alexey L Khodjakov
-
依托单位:
FUNCTIONAL PROPERTIES OF CENTROSOMES IN SOMATIC CELLS
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批准号:2834146
-
项目类别:
-
资助金额:$10.87万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
Functional properties of centrosomes in somatic cells
-
批准号:7617995
-
项目类别:
-
资助金额:$33.06万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
Functional properties of centrosomes in somatic cells
-
批准号:7228195
-
项目类别:
-
资助金额:$32.27万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
FUNCTIONAL PROPERTIES OF CENTROSOMES IN SOMATIC CELLS
-
批准号:6623685
-
项目类别:
-
资助金额:$30.99万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
Functional properties of centrosomes in somatic cells
-
批准号:8448918
-
项目类别:
-
资助金额:$3.92万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
Centrosomal and centrosome-independent mechanisms in mitotic spindle assembly
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批准号:8921206
-
项目类别:
-
资助金额:$41.51万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
Functional properties of centrosomes in somatic cells
-
批准号:7097834
-
项目类别:
-
资助金额:$32.35万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
FUNCTIONAL PROPERTIES OF CENTROSOMES IN SOMATIC CELLS
-
批准号:6469471
-
项目类别:
-
资助金额:$30.28万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
Functional properties of centrosomes in somatic cells
-
批准号:8065859
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项目类别:
-
资助金额:$40.66万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
FUNCTIONAL PROPERTIES OF CENTROSOMES IN SOMATIC CELLS
-
批准号:6181473
-
项目类别:
-
资助金额:$10.99万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
Centrosomal and centrosome-independent mechanisms in mitotic spindle assembly
-
批准号:8757651
-
项目类别:
-
资助金额:$41.51万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位:
FUNCTIONAL PROPERTIES OF CENTROSOMES IN SOMATIC CELLS
-
批准号:6386481
-
项目类别:
-
资助金额:$11.11万
-
财政年份:1999
-
负责人:Alexey L Khodjakov
-
依托单位: