Reviving immunogenic cell death upon targeting TACC3 enhances T-DM1 response in HER2-positive breast cancer
Immunogenic cell death (ICD), an immune-priming form of cell death, has been shown to be induced by several different anti-cancer therapies. Despite being the first and one of the most successful antibody-drug conjugates (ADCs) approved for refractory HER2-positive breast cancer, little is known if response and resistance to trastuzumab emtansine (T-DM1) involves ICD modulation that can be leveraged to enhance T-DM1 response. Here, we report that T-DM1 induces spindle assembly checkpoint (SAC)-dependent ICD in sensitive cells by inducing eIF2α phosphorylation, surface exposure of calreticulin, ATP and HMGB1 release, and secretion of ICD-related cytokines, all of which are lost in resistance. Accordingly, an ICD-related gene signature correlates with clinical response to T-DM1-containing therapy. We found that transforming acidic coiled-coil containing 3 (TACC3) is overexpressed in T-DM1 resistant cells, and that T-DM1 responsive patients have reduced TACC3 protein while the non-responders exhibited increased TACC3 expression during T-DM1 treatment. Notably, genetic or pharmacological inhibition of TACC3 revives T-DM1-induced SAC activation and induction of ICD markers in vitro. Finally, TACC3 inhibition elicits ICD in vivo shown by vaccination assay, and it potentiates T-DM1 by inducing dendritic cell (DC) maturation and enhancing infiltration of cytotoxic T cells in the human HER2-overexpressing MMTV.f.huHER2#5 (Fo5) transgenic model. Together, our results show that ICD is a key mechanism of action of T-DM1 which is lost in resistance, and that targeting TACC3 restores T-DM1-mediated ICD and overcomes resistance.
Errataetall: | |
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Medienart: |
E-Artikel |
Erscheinungsjahr: |
2023 |
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Erschienen: |
2023 |
Enthalten in: |
Zur Gesamtaufnahme - year:2023 |
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Enthalten in: |
bioRxiv : the preprint server for biology - (2023) vom: 14. Sept. |
Sprache: |
Englisch |
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Beteiligte Personen: |
Gedik, Mustafa Emre [VerfasserIn] |
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Links: |
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Themen: |
Antibody drug conjugate |
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Anmerkungen: |
Date Revised 21.02.2024 published: Electronic UpdateIn: Cancer Res. 2024 Feb 6;:. - PMID 38319231 Citation Status PubMed-not-MEDLINE |
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doi: |
10.1101/2023.09.12.557273 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM362418187 |
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520 | |a Immunogenic cell death (ICD), an immune-priming form of cell death, has been shown to be induced by several different anti-cancer therapies. Despite being the first and one of the most successful antibody-drug conjugates (ADCs) approved for refractory HER2-positive breast cancer, little is known if response and resistance to trastuzumab emtansine (T-DM1) involves ICD modulation that can be leveraged to enhance T-DM1 response. Here, we report that T-DM1 induces spindle assembly checkpoint (SAC)-dependent ICD in sensitive cells by inducing eIF2α phosphorylation, surface exposure of calreticulin, ATP and HMGB1 release, and secretion of ICD-related cytokines, all of which are lost in resistance. Accordingly, an ICD-related gene signature correlates with clinical response to T-DM1-containing therapy. We found that transforming acidic coiled-coil containing 3 (TACC3) is overexpressed in T-DM1 resistant cells, and that T-DM1 responsive patients have reduced TACC3 protein while the non-responders exhibited increased TACC3 expression during T-DM1 treatment. Notably, genetic or pharmacological inhibition of TACC3 revives T-DM1-induced SAC activation and induction of ICD markers in vitro. Finally, TACC3 inhibition elicits ICD in vivo shown by vaccination assay, and it potentiates T-DM1 by inducing dendritic cell (DC) maturation and enhancing infiltration of cytotoxic T cells in the human HER2-overexpressing MMTV.f.huHER2#5 (Fo5) transgenic model. Together, our results show that ICD is a key mechanism of action of T-DM1 which is lost in resistance, and that targeting TACC3 restores T-DM1-mediated ICD and overcomes resistance | ||
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700 | 1 | |a Saatci, Ozge |e verfasserin |4 aut | |
700 | 1 | |a Oberholtzer, Nathaniel |e verfasserin |4 aut | |
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700 | 1 | |a Cetin, Metin |e verfasserin |4 aut | |
700 | 1 | |a Aras, Mertkaya |e verfasserin |4 aut | |
700 | 1 | |a Ibis, Kubra |e verfasserin |4 aut | |
700 | 1 | |a Caliskan, Burcu |e verfasserin |4 aut | |
700 | 1 | |a Banoglu, Erden |e verfasserin |4 aut | |
700 | 1 | |a Wiemann, Stefan |e verfasserin |4 aut | |
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700 | 1 | |a Aksoy, Sercan |e verfasserin |4 aut | |
700 | 1 | |a Mehrotra, Shikhar |e verfasserin |4 aut | |
700 | 1 | |a Sahin, Ozgur |e verfasserin |4 aut | |
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