Proteomics

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ANXA1 promotes tumor immune evasion by binding PARP1 and upregulating the transcription of PD-L1 in the multiple cancers


ABSTRACT: To search proteins that interact with ANXA1, ANXA1 interactors were coimmunoprecipitated with anti-ANXA1 antibody from MB231 cell extracts, separated on SDS-PAGE and stained with Coomassie blue , and non-immune IgG antibody instead of anti-ANXA1 antibody served as control. All bands were excised, and subjected to in gel trypsin digestion and liquid chromatography and high-throughput mass spectrometry (LC-MS/MS) analysis.As a result, a total of 489 proteins including PARP1 were identified .

ORGANISM(S): Homo Sapiens

SUBMITTER: Zhiqiang Xiao  

PROVIDER: PXD036235 | iProX | Tue Aug 23 00:00:00 BST 2022

REPOSITORIES: iProX

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ANXA1 Promotes Tumor Immune Evasion by Binding PARP1 and Upregulating Stat3-Induced Expression of PD-L1 in Multiple Cancers.

Xiao Ding D   Zeng Ting T   Zhu Wei W   Yu Zheng-Zheng ZZ   Huang Wei W   Yi Hong H   Lu Shan-Shan SS   Feng Juan J   Feng Xue-Ping XP   Wu Di D   Wen Qi Q   Zhou Jian-Hua JH   Yuan Li L   Zhuang Wei W   Xiao Zhi-Qiang ZQ  

Cancer immunology research 20231001 10


The deregulation of Annexin A1 (ANXA1), a regulator of inflammation and immunity, leads to cancer growth and metastasis. However, whether ANXA1 is involved in cancer immunosuppression is still unclear. Here, we report that ANXA1 knockdown (i) dramatically downregulates programmed cell death-ligand 1 (PD-L1) expression in breast cancer, lung cancer, and melanoma cells; (ii) promotes T cell-mediated killing of cancer cells in vitro; and (iii) inhibits cancer immune escape in immune-competent mice  ...[more]

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