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NEW YORK DAWN™ > Blog > Health > A battle of rafts: How molecular dynamics in CAR T cells clarify their cancer-killing conduct
A battle of rafts: How molecular dynamics in CAR T cells clarify their cancer-killing conduct
Health

A battle of rafts: How molecular dynamics in CAR T cells clarify their cancer-killing conduct

Last updated: January 10, 2025 7:04 pm
Editorial Board Published January 10, 2025
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Credit score: CC0 Public Area

A research printed in Science Advances shares new insights into how two of the commonest varieties of chimeric antigen receptor (CAR) T cells kill most cancers.

Investigators from Baylor School of Medication, Texas Youngsters’s Most cancers Heart and the Heart for Cell and Gene Remedy at Baylor, Houston Methodist Hospital and Texas Youngsters’s Hospital examined how molecular dynamics on the immune synapse—the place CAR T cells bind to most cancers cells—have an effect on anticancer exercise.

On this research, researchers aimed to know how CAR T cells with totally different signaling domains work on the molecular and mobile ranges to put the muse for designing CAR molecules that maximize antitumor exercise past B cell malignancies.

“We looked at two different types of CAR T cells. The first, CD28.ζ-CART cells, are like sprinters. They kill cancer cells quickly and efficiently, but their activity is short-lived. The second, 4-1BB.ζ-CART cells, are like marathon runners. They kill cancer cells consistently over a long period,” stated senior creator Dr. Nabil Ahmed, professor of pediatrics—hematology and oncology at Baylor and Texas Youngsters’s.

“We need to understand what’s happening at the molecular level so we can engineer CAR T cells to adapt their killing behavior to target hard-to-treat malignancies, such as solid tumors.” Ahmed can be a member of the Heart for Cell and Gene Remedy and the Dan L Duncan Complete Most cancers Heart.

Led by first creator Dr. Ahmed Gad, postdoctoral affiliate in Ahmed’s lab, the analysis staff examined molecular dynamics on the immune synapse. The staff biopsied the CAR T cell immunological synapse by isolating the membrane lipid rafts—cholesterol-rich molecules on the cell floor the place most molecular interactions between cells happen.

They discovered that CD28.ζ-CAR molecules shuttle by means of the immune synapse shortly, working inside minutes to kill most cancers cells. This enabled quick CAR T cell restoration and a mastery of “serial killing” of most cancers cells. In distinction, researchers discovered that 4-1BB.ζ-CAR molecules linger within the lipid rafts and immune synapse. The 4-1BB.ζ-CAR T cells multiply and work collectively, leading to sustained “collaborative” killing of tumor cells.

“Observing the distinct pattern of dynamics between single molecules helps us understand the big picture of how these products work,” Gad stated. “Next, we are studying how to dynamically adapt these CAR T cells at the synapse level to make them more effective.”

“Tumors are very sophisticated. We need to adapt our tools to the biology of the disease. This may involve using multiple tools that work in different ways at different stages,” Ahmed added.

Extra data:
Ahmed Gad et al, Molecular dynamics at immune synapse lipid rafts affect the cytolytic conduct of CAR T cells, Science Advances (2025). DOI: 10.1126/sciadv.adq8114. www.science.org/doi/10.1126/sciadv.adq8114

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Baylor School of Medication

Quotation:
A battle of rafts: How molecular dynamics in CAR T cells clarify their cancer-killing conduct (2025, January 10)
retrieved 10 January 2025
from https://medicalxpress.com/information/2025-01-rafts-molecular-dynamics-car-cells.html

This doc is topic to copyright. Aside from any honest dealing for the aim of personal research or analysis, no
half could also be reproduced with out the written permission. The content material is supplied for data functions solely.

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