资讯分类

辛辛那提儿童医院研究基金发育和再生神经生物学研究博士后岗位

日期:2008-04-01
Institution

Cincinnati Children's Hospital Research Foundation

Position

Postdoctoral Fellow in Developmental and Regenerative Neurobiology

Location

Cincinnati, OH, USA

Date Posted

March 31th 2008

Date Expires

April 30th 2008

Tags

postdoctoral fellow, developmental and regenerative neurobiology,cincinnati, oh, and usa

Description

We are using C. elegans as a model system to study cellular andmolecular mechanisms underlying neuronal development and

regeneration. The C. elegans nervous system is composed of 302 neuronswith a complete map of all axon trajectories and

synaptic connections. The transparency and small size of C. elegansallows us to target any axon with femtosecond laser

ablation, as well as visualize axonal development and axonalregeneration in live animals using time-lapse fluorescence

microscopy. Femtosecond laser ablation is a new optical scalpel withexquisite precision and reproducibility. The nanometer

precision of femtosecond laser ablation, as well as the million-foldshorter exposure interval, allows us to snip

individual nerve fibers without collateral damages to the cell body orneighboring fibers. C. elegans has very powerful

genetic tools to illustrate basic biological mechanisms as exemplifiedby C. elegans biologists winning 2002 Nobel Prize in

programmed cell death and again past year Nobel Prize in RNAi. We thushave a unique opportunity to apply powerful genetic

and optical approaches in C. elegans to dissect brain wiring andrewiring mechanisms.

References:

Gabel, CV, Antonie, F, Chuang, C-F, Samuel, AD, and Chang, C. Distinctcellular and molecular mechanisms mediate initial

axon development and adult-stage axon regeneration in C. elegans.Development (2008) 135: 1129-1136.

Chang C, Adler C, Krause M, Clark S, Hao J, Gertler F, Tessier-LavigneM, Bargmann CI.
MIG-10/Lamellipodin and the lipid modulator AGE-1/PI3K promote axonguidance and outgrowth in response to Slit and Netrin.

Current Biology (2006) 16: 1-9.

Samuel A, Chung SH, Clark DA, Gabel CV, Chang C, Murthy V and Mazur E.Femtosecond laser dissection in C. elegans neural

circuits. Proceedings of The International Society for OpticalEngineering (2006) 6108: 1-6.

Chang C, Yu TW, Bargmann CI, Tessier-Lavigne M.
Inhibition of Netrin-mediated axon attraction by a receptor proteintyrosine phosphatase.
Science (2004) 305: 103-106.

Qualifications:
Prior experience in C. elegans is helpful but not essential. Applicantsshould have a Ph.D. in genetics, cell biology,

molecular biology, neurobiology, or biochemistry and are familiar withmolecular biology techniques.

Contact

Interested candidates please send a brief cover letter describingresearch experience, CV, and names and contact

information of two references to Dr. Chieh Chang at chieh.chang@mcgill.ca.
[作者:jurgen    编辑:]