2026-09-19T10:59:44Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/466622022-01-13T07:54:17Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Martha Constantine-Paton.
Tunca, Cansu, 1977-
Massachusetts Institute of Technology. Dept. of Brain and Cognitive Sciences.
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
2009-08-26T17:14:53Z
2009-08-26T17:14:53Z
2009
2009
http://hdl.handle.net/1721.1/46662
427875209
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Brain and Cognitive Sciences, 2009.
Includes bibliographical references (leaves 32-41).
The trafficking of essential proteins into spines is an important aspect of synaptic plasticity. MyosinVa, an actin-based motor protein, has been implicated in the synaptic delivery of AMPARs during LTP [1]. However an earlier study showed that LTP and LTD were unaffected in the MyosinVa-null dilute-lethal mice [2]. To evaluate the role of MyosinVa in synaptic plasticity, we studied different forms of LTP and LTD in the CA1 region of the hippocanmpus from MyosinVa dominant negative mutant flailer mouse using field potential recordings. Flailer mice showed no impairment of LTP or NMDAR-dependent LTD, consistent with the findings of the study on dilute-lethal. In addition, MyosinVa has been implicated in the transport of an RNA-binding protein into the spines upon mGluR activation [3]. We explored protein synthesis and mGluR-dcpendent LTD in flailer. The preliminary data we obtained show a transient impairment in mGluR.-LTD, suggesting a role for MyosinVa in protein synthesis dependent plasticity.
by Cansu Tunca.
S.M.
41 leaves
eng
Massachusetts Institute of Technology
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http://dspace.mit.edu/handle/1721.1/7582
Brain and Cognitive Sciences.
Synaptic plasticity in the MyosinVa mutant mouse
Thesis
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<Abstract>The trafficking of essential proteins into spines is an important aspect of synaptic plasticity. MyosinVa, an actin-based motor protein, has been implicated in the synaptic delivery of AMPARs during LTP [1]. However an earlier study showed that LTP and LTD were unaffected in the MyosinVa-null dilute-lethal mice [2]. To evaluate the role of MyosinVa in synaptic plasticity, we studied different forms of LTP and LTD in the CA1 region of the hippocanmpus from MyosinVa dominant negative mutant flailer mouse using field potential recordings. Flailer mice showed no impairment of LTP or NMDAR-dependent LTD, consistent with the findings of the study on dilute-lethal. In addition, MyosinVa has been implicated in the transport of an RNA-binding protein into the spines upon mGluR activation [3]. We explored protein synthesis and mGluR-dcpendent LTD in flailer. The preliminary data we obtained show a transient impairment in mGluR.-LTD, suggesting a role for MyosinVa in protein synthesis dependent plasticity.</Abstract>
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