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T Cell Activation and Clonal Selection

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...

Evolutionary Relationships through Genome Comparisons

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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...

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Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...

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Related Experiment Video

Updated: Aug 25, 2025

Multiplexed Barcoding Image Analysis for Immunoprofiling and Spatial Mapping Characterization in the Single-Cell Analysis of Paraffin Tissue Samples

Multiplexed Barcoding Image Analysis for Immunoprofiling and Spatial Mapping Characterization in the Single-Cell Analysis of Paraffin Tissue Samples

Published on: April 7, 2023

Cellular barcoding to decipher clonal dynamics in disease.

Vijay G Sankaran^1,2,3,4, Jonathan S Weissman^5,6,7,8, Leonard I Zon^{1,2,3,4,6,9,10}

¹Division of Hematology and Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.

Science (New York, N.Y.)

|October 13, 2022

Summary

This summary is machine-generated.

Cellular barcoding uses unique DNA tags to track cells, revolutionizing our understanding of cell behavior and disease. This technology offers new insights into cancer and blood disorders, with broad medical applications.

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VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma

VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma

Published on: December 28, 2015

Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications

Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications

Published on: April 14, 2015

Related Experiment Videos

Last Updated: Aug 25, 2025

Multiplexed Barcoding Image Analysis for Immunoprofiling and Spatial Mapping Characterization in the Single-Cell Analysis of Paraffin Tissue Samples

Multiplexed Barcoding Image Analysis for Immunoprofiling and Spatial Mapping Characterization in the Single-Cell Analysis of Paraffin Tissue Samples

Published on: April 7, 2023

VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma

VDJ-Seq: Deep Sequencing Analysis of Rearranged Immunoglobulin Heavy Chain Gene to Reveal Clonal Evolution Patterns of B Cell Lymphoma

Published on: December 28, 2015

Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications

Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications

Published on: April 14, 2015

Area of Science:

Biotechnology
Genomics
Cell Biology

Background:

Cellular barcodes are unique DNA sequences for tracking cells over time and space.
Advances in detecting cellular barcodes and single-cell analysis enhance understanding of cellular dynamics and tissue composition.

Purpose of the Study:

To provide an overview of cellular barcoding techniques.
To discuss the application of cellular barcoding in understanding disease mechanisms.
To explore future directions and potential of cellular barcoding in medicine.

Main Methods:

Overview of various cellular barcoding approaches.
Analysis of single-cell readouts and their integration with barcoding data.
Review of existing studies utilizing cellular barcoding.

Main Results:

Cellular barcoding has significantly advanced the study of clonal dynamics and cell genealogies.
Unanticipated insights into cancer and blood cell production have been revealed through barcoding.
The technology shows promise for redefining the understanding of human diseases.

Conclusions:

Cellular barcoding is a powerful tool for investigating cellular dynamics and disease mechanisms.
Its application is expanding across various medical fields, especially in understanding clonal contributions to disease.
Future applications hold significant potential for transforming medical research and diagnostics.