Examine Chemoavoidance Behavior in Transgenic Worms Using Osmotic Avoidance Assay
Published: April 30, 2023
Abstract
Source: Wang, Q. et al., Z. Caenorhabditis elegans as a Model System for Discovering Bioactive Compounds Against Polyglutamine-Mediated Neurotoxicity. J. Vis. Exp. (2021).
This video describes an osmotic avoidance assay to examine chemoavoidance behavior in a transgenic worm model. Avoidance behavior is tested in a plate in the presence of a high-osmotic barrier and chemoattractant. The worms with a functional loss of neurons get attracted by the chemoattractant, cross the high-osmotic barrier, and become paralyzed in the trap zone because of the anesthetic solution.
Protocol
All procedures involving animal models have been reviewed by the local institutional animal care committee and the JoVE veterinary review board. NOTE: See Table 1 for the recipes of solutions used in this protocol. 1. Preparation of materials for the Caenorhabditis elegans assay Maintenance of C. elegans strains Obtain C. elegans (AM141 and HA759) and Escherichi…
Divulgaciones
The authors have nothing to disclose.
Materials
| C. elegans strains | |||
| HA759 rtIs11 [osm-10p::GFP + osm-10p::HtnQ150 + dpy-20(+)] |
Caenorhabditis Genetics Center (CGC) | https://cgc.umn.edu/strain/HA759 | |
| E. coli strains | |||
| NA22 | Caenorhabditis Genetics Center (CGC) | https://cgc.umn.edu/strain/NA22 | |
| OP50 | Caenorhabditis Genetics Center (CGC) | https://cgc.umn.edu/strain/OP50 | |
| Reagent | |||
| Agar | Shanghai EKEAR Bio-Technology Co., Ltd. | EQ1001-500G | https://www.ekear.com |
| Butanedione | Sinopharm Chemical Reagent Co., Ltd. | 80042427 | https://www.reagent.com.cn/goodsDetail/d027c00e64c9404d9aa41391fbb 595d0 |
| Cholesterol | Sigma-Aldrich | C8667 | https://www.sigmaaldrich.cn/CN/zh/product/sigma/c8667?context=product |
| Glycerol | Aladdin Co., Ltd. | G116203 | https://www.aladdin-e.com/zh_cn/g116203.html |
| Peptone | Guangdong HuanKai Microbial Science and Technology Co., Ltd. | 050170B | https://www.huankai.com/show/21074.html |
| Sodium azide | Sinopharm Chemical Reagent Co., Ltd. | 80115560 | https://www.reagent.com.cn/goodsDetail/5e981aa807664e26af 551e96ff5f07cd |
| Sodium hydroxide | Sinopharm Chemical Reagent Co., Ltd. | 10019718 | https://www.reagent.com.cn/goodsDetail/450dfdb1132a4d8a817 d3d8c68ec25e6 |
| Sodium hypochlorite solution | Guangzhou Chemical Reagent Factory | 7681-52-9 | http://www.chemicalreagent.com/product/DetailProduct.aspx?id=125 |
| Tryptone | Oxoid Ltd. | LP0042B | https://www.thermofisher.cn/order/catalog/product/LP0042B#/LP0042B |
| Yeast extract | Oxoid Ltd. | LP0021B | https://www.thermofisher.cn/order/catalog/product/LP0021B#/LP0021B |
| Equipment | |||
| 48-well cell culture plate | Nest Biotechnology Co., Ltd. | 748001 | https://www.cell-nest.com/page94?_l=en&product_id=85 |
| 90 mm Petri dish | Sangon Biotech (Shanghai) Co., Ltd. | F611003 | https://www.sangon.com/productDetail?productInfo.code=F611003 |
| Autoclave | Panasonic | MLS-3781L-PC | |
| Dissecting microscope | ChongQing Optical Co., Ltd. | ZSA0745 | http://www.coicuop.com/plus/view.php?aid=64 |
| Microcentrifuge | GeneCompany | GENESPEED X1 | https://www.genecompany.com/index.php/Home/Goods/goodsdetails/gid/189.html |
| Parafilm M | Sigma-Aldrich | P7793-1EA | https://www.sigmaaldrich.cn/CN/en/product/sigma/p7793?context=product |
| Shaker | Zhicheng Inc. | ZWY-2102C | http://www.zhicheng.net/Product/0865291356.html |
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Citar este artículo
Examine Chemoavoidance Behavior in Transgenic Worms Using Osmotic Avoidance Assay. J. Vis. Exp. (Pending Publication), e21286, doi: (2023).