A single-cell multi-omic and spatial atlas of B cell lymphomas reveals differentiation drives intratumor heterogeneity
Summary Intratumor heterogeneity is intrinsic to cancer evolution and treatment resistance, although it is typically considered distinct from the differentiation processes driving cell-type and cancer-type diversity. Nodal B cell non-Hodgkin lymphomas are tied to distinct stages of B cell maturation. Through a single-cell multi-omic and spatial atlas of diffuse large B cell, mantle cell, follicular, and marginal zone lymphomas in addition to reactive lymph nodes in 51 patients, we uncovered co-existing B cell maturation states within the same tumors. These intratumor maturation states emerged from the same clone, revealing ongoing differentiation from the cell-of-origin. Maturation state composition varied across and within disease entities, with tumors encompassing mixed cell-of-origin clinical subtypes. Intratumor maturation states inhabited unique spatial niches, maintaining their maturation-associated cellular interactions and regulatory networks while harboring distinct genetic variant expression patterns. Our findings show that cell-type differentiation remains plastic in cancer and is central to tumor variation and evolution.Graphical abstract <jats:fig id="ufig1" position="float" orientation="portrait" fig-type="figure"><jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="565756v2_ufig1" position="float" orientation="portrait" /></jats:fig>.
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Preprint| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
bioRxiv.org - (2023) vom: 30. Nov. Zur Gesamtaufnahme - year:2023 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
Fitzgerald, Donnacha [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| doi: |
10.1101/2023.11.06.565756 |
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| PPN (Katalog-ID): |
XBI041463323 |
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| 520 | |a Summary Intratumor heterogeneity is intrinsic to cancer evolution and treatment resistance, although it is typically considered distinct from the differentiation processes driving cell-type and cancer-type diversity. Nodal B cell non-Hodgkin lymphomas are tied to distinct stages of B cell maturation. Through a single-cell multi-omic and spatial atlas of diffuse large B cell, mantle cell, follicular, and marginal zone lymphomas in addition to reactive lymph nodes in 51 patients, we uncovered co-existing B cell maturation states within the same tumors. These intratumor maturation states emerged from the same clone, revealing ongoing differentiation from the cell-of-origin. Maturation state composition varied across and within disease entities, with tumors encompassing mixed cell-of-origin clinical subtypes. Intratumor maturation states inhabited unique spatial niches, maintaining their maturation-associated cellular interactions and regulatory networks while harboring distinct genetic variant expression patterns. Our findings show that cell-type differentiation remains plastic in cancer and is central to tumor variation and evolution.Graphical abstract <jats:fig id="ufig1" position="float" orientation="portrait" fig-type="figure"><jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="565756v2_ufig1" position="float" orientation="portrait" /></jats:fig> | ||
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