Cell-Lineage Guided Mass Spectrometry Proteomics in the Developing (Frog) Embryo

Aparna B. Baxi; Leena R. Pade; Peter Nemes

doi:10.3791/63586

Proteómica de espectrometría de masas guiada por linaje celular en el embrión en desarrollo (rana)

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Chemistry

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JoVE Journal Chemistry

Cell-Lineage Guided Mass Spectrometry Proteomics in the Developing (Frog) Embryo

Proteómica de espectrometría de masas guiada por linaje celular en el embrión en desarrollo (rana)

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09:18 min

April 21, 2022

DOI: 10.3791/63586-v

Aparna B. Baxi^1,2, Leena R. Pade¹, Peter Nemes^1,2

¹Department of Chemistry & Biochemistry,University of Maryland, ²Department of Anatomy & Cell Biology,The George Washington University

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Overview

This study presents a mass spectrometry-based proteomic characterization of cell lineages in the vertebrate Xenopus laevis embryo. The lineage-guided approach allows for detailed analysis of developmental events with spatial and temporal resolution.

Key Study Components

Area of Science

Proteomics
Developmental Biology
Xenopus laevis Embryology

Background

Understanding cell lineage and tissue fate is crucial in developmental biology.
Proteomic analysis can reveal molecular mechanisms underlying development.
Traditional whole embryo measurements may overlook important details.
Xenopus laevis serves as a model organism for studying vertebrate development.

Purpose of Study

To enable proteomic analysis of cell lineages during embryonic development.
To provide insights into tissue induction and cell fate commitment.
To enhance understanding of normal and disease development mechanisms.

Methods Used

Mass spectrometry for proteomic characterization.
Lineage-guided approach for targeted analysis.
Microneedle positioning for precise cell targeting.
Utilization of tissue fate maps for identifying precursor cells.

Main Results

Successful proteomic profiling of specific cell lineages.
Identification of key proteins involved in developmental processes.
Demonstrated spatial and temporal resolution in protein analysis.
Provided a framework for studying differentiation in embryonic cells.

Conclusions

The method advances the understanding of developmental biology.
It opens avenues for studying various molecular mechanisms.
Potential applications in understanding disease development.

Frequently Asked Questions

What is the significance of using Xenopus laevis in this study?

Xenopus laevis is a well-established model organism that provides insights into vertebrate development, making it ideal for studying cell lineages.

How does the lineage-guided approach improve proteomic analysis?

This approach allows for targeted analysis of specific cell types, providing more detailed information than whole embryo measurements.

What techniques are used to isolate specific cells in the embryo?

Microneedles and forceps are used to precisely position and isolate targeted cells from the embryo.

Can this method be applied to other organisms?

Yes, the lineage-guided approach can be adapted to study other embryonic cells in different organisms.

What are the potential implications of this research?

The findings could enhance our understanding of developmental processes and contribute to research on developmental disorders.

How does this study contribute to the field of developmental biology?

It provides a novel method for analyzing cell lineages, which is crucial for understanding tissue development and differentiation.

Aquí describimos una caracterización proteómica basada en espectrometría de masas de linajes celulares con destinos tisulares conocidos en el embrión vertebrado de Xenopus laevis .

Este enfoque guiado por linaje permite el análisis proteómico de eventos importantes del desarrollo con resolución espacial y temporal dentro del embrión vertebrado impartiendo información que no sería accesible a través de mediciones de embriones completos. Este enfoque se puede extender fácilmente para estudiar proteínas, metabolitos y transcripciones de diferentes células embrionarias a medida que se diferencian durante el desarrollo. Este método puede avanzar en nuestra comprensión de los mecanismos moleculares que controlan el desarrollo normal y de la enfermedad, incluidos los mecanismos de inducción tisular y el compromiso del destino celular durante el desarrollo temprano.

Use un lazo de cabello para guiar cada embrión hacia un pozo y colóquelos suavemente para que la célula de interés objetivo esté en el ángulo correcto con la microaguja. Siga los mapas de destino del tejido de xenopus laevis para identificar la célula precursora del linaje de interés. Use dos pinzas de afilado para extraer suavemente la membrana vitelina que rodea el embrión.

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