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 JoVE Biology

Ex vivo Culture of Drosophila Pupal Testis and Single Male Germ-line Cysts: Dissection, Imaging, and Pharmacological Treatment

1Fachbereich Biologie, Entwicklungsbiologie, Philipps-Universität Marburg, 2Institut für Molekularbiologie und Tumorforschung, Philipps-Universität Marburg


JoVE 51868

This protocol describes the dissection and cultivation of intact testes and germ-line cysts from Drosophila melanogaster pupae. This method allows microscopic observation of spermatogenesis ex vivo. Furthermore, we describe a pharmacological assay of the effect of inhibitors on specific stages of germ-cell development in pupal testes.

 JoVE Biology

Ablation of a Single Cell From Eight-cell Embryos of the Amphipod Crustacean Parhyale hawaiensis

1Department of Organismic and Evolutionary Biology, Harvard University


JoVE 51073

The amphipod Parhyale hawaiensis is a promising model organism for studies of crustacean embryology and comparative arthropod development and evolution. This protocol describes a method for manual removal of single blastomeres from early cleavage stage embryos of Parhyale.

 JoVE Immunology and Infection

Assessing Hepatic Metabolic Changes During Progressive Colonization of Germ-free Mouse by 1H NMR Spectroscopy

1School of Chemistry, Food and Pharmacy, The University of Reading, 2Department of Nutritional Sciences, The University of Reading


JoVE 3642

A progressive colonization procedure is described to further assess its impact on the host hepatic metabolism. Colonization is monitored non invasively by evaluating the urinary excretion of microbial co-metabolites by NMR-based metabolic profiling while hepatic metabolism is assessed by High Resolution Magic Angle Spinning (HR MAS) NMR profiling of intact biopsy.

 JoVE Biology

Dietary Supplementation of Polyunsaturated Fatty Acids in Caenorhabditis elegans

1School of Molecular Biosciences, Washington State University, 2Center for Reproductive Biology, Washington State University


JoVE 50879

Caenorhabditis elegans is a useful model to explore the functions of polyunsaturated fatty acids in development and physiology. This protocol describes an efficient method of supplementing the C. elegans diet with polyunsaturated fatty acids.

 JoVE Biology

The Slice Culture Method for Following Development of Tooth Germs In Explant Culture

1Department of Craniofacial Development and Stem Cell Biology, and Department of Orthodontics, Dental Institute, Guy's Hospital, UK, King's College London, 2Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Kingdom of Saudi Arabia


JoVE 50824

Here we detail a method to culture tooth germs in mandible slices using a tissue chopper. This method allows unique access to the tooth during development, providing excellent opportunity for manipulation and lineage tracing, not available using more traditional culture methods.

 JoVE Biology

Serial Enrichment of Spermatogonial Stem and Progenitor Cells (SSCs) in Culture for Derivation of Long-term Adult Mouse SSC Lines

1Department of Surgery, Weill Cornell Medical College


JoVE 50017

A simple method to derive and maintain spermatogonial stem and progenitor cell lines from adult mice is presented here. The method utilizes feeder cells originating from the somatic cell compartment of the adult mouse testis. This technique is applicable to common mouse strains, including transgenic, knock-out, and knock-in mice.

 JoVE Neuroscience

Revealing Neural Circuit Topography in Multi-Color

1Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Yeshiva University


JoVE 3371

We provide a practical guide for delivering tracers in vivo and use the spinocerebellar pathway as a model system to demonstrate essential steps for successful neuronal circuit analysis in mice. We describe in detail our versatile tracing protocol that exploits wheat germ agglutinin (WGA) conjugated to Alexa fluorophores.

 JoVE Biology

Alternative Cultures for Human Pluripotent Stem Cell Production, Maintenance, and Genetic Analysis

1NIH Stem Cell Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 2Craniofacial and Skeletal Diseases Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health


JoVE 51519

Here, we present human pluripotent stem cell (hPSC) culture protocols, based on non-colony type monolayer (NCM) growth of dissociated single cells. This new method, utilizing Rho-associated kinase inhibitors or the laminin isoform 521 (LN-521), is suitable for producing large amounts of homogeneous hPSCs, genetic manipulation, and drug discovery.

 JoVE Biology

Enrichment and Purging of Human Embryonic Stem Cells by Detection of Cell Surface Antigens Using the Monoclonal Antibodies TG30 and GCTM-2

1Materials Science and Engineering, CSIRO


JoVE 50856

We describe the use of the monoclonal antibodies TG30 (CD9) and GCTM-2 for the combined detection of cell surface antigens via fluorescence activated cell sorting (FACS) for the identification and enrichment of live human embryonic stem cells (hESC) using positive selection and also the use of negative selection to purge hESCs from a mixed cell population.

 JoVE Biology

Reconstitution Of β-catenin Degradation In Xenopus Egg Extract

1Department of Cell and Developmental Biology and Program in Developmental Biology, Vanderbilt University Medical Center, 2Division of Gastroenterology, Hepatology & Nutrition and Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, 3Vanderbilt Ingram Cancer Center, Vanderbilt University School of Medicine


JoVE 51425

A method is described for analyzing protein degradation using radiolabeled and luciferase-fusion proteins in Xenopus egg extract and its adaptation for high-throughput screening for small molecule modulators of protein degradation.

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