Cancer letters最新文献

{"title":"Predictors of para-aortic lymph node metastasis based on pathological diagnosis via surgical staging in patients with locally advanced cervical cancer: A multicenter study","authors":"Mingfang Guo ,&nbsp;Misi He ,&nbsp;Yun Dang ,&nbsp;Li Lei ,&nbsp;Qiaoling Li ,&nbsp;Yue Huang ,&nbsp;Liang Du ,&nbsp;Haike Lei ,&nbsp;Qian Zheng ,&nbsp;Jing Wang ,&nbsp;Xiuying Li ,&nbsp;Hao He ,&nbsp;Xiang Zhang ,&nbsp;Ying Tang ,&nbsp;Qi Zhou ,&nbsp;Dongling Zou","doi":"10.1016/j.canlet.2025.217545","DOIUrl":"10.1016/j.canlet.2025.217545","url":null,"abstract":"<div><div>Para-aortic lymph node (PALN) metastasis of patients with locally advanced cervical cancer (LACC) is associated with multiple risk factors. This study aimed to identify risk factors and develop a predictive model for PALN metastasis based on the pathological diagnosis via surgical staging to determine the patient-population suitable for extended-field irradiation (EFRT) and clarify the prognosis of patients with LACC. Five parameters were identified as predictors by logistic regression analysis. The predictive model was displayed as a nomogram and then modified into a simple scoring system. The concordance indices for the prediction nomogram were 0.939 in the training cohort, and 0.954 in the validation cohort, respectively. The scoring system consisted of tumor size, histological type, number of pelvic lymph nodes (PLNs), common iliac lymph node, and shorter diameter of the largest PLN. With a cutoff value of 8 points, the sensitivity and specificity of the predictive model were 91.04 % and 85.37 %, respectively, in the training cohort, and 89.47 % and 84.68 %, respectively, in the validation cohort. Using this system, patients were divided into high- and low-risk groups. Patients in the high-risk group showed a greater likelihood of PALN metastasis and worse PFS and OS than those in the low-risk group. The predictive model displays promise for the pathological diagnosis of PALN via surgical staging, offering good accuracy. It provides a non-invasive, practical tool to guide precise radiation strategy and stratify prognosis of patients with LACC.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"616 ","pages":"Article 217545"},"PeriodicalIF":9.1,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143440297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Splicing factor SF3B4 acts as a switch in cancer cell senescence by regulating p21 mRNA stability","authors":"Donghee Kang ,&nbsp;Jee Young Sung ,&nbsp;Hyun Jung Hwang ,&nbsp;Yurim Baek ,&nbsp;Min-Ji Kim ,&nbsp;Ga-Eun Lim ,&nbsp;Yong-Nyun Kim ,&nbsp;Jong-Ho Cha ,&nbsp;Jae-Seon Lee","doi":"10.1016/j.canlet.2025.217530","DOIUrl":"10.1016/j.canlet.2025.217530","url":null,"abstract":"<div><div>SF3B4, a splicing factor known to regulate mRNA expression and function, is upregulated in various cancers. Despite its potential significance, the mechanisms through which SF3B4 regulates nonsense-mediated mRNA decay (NMD) and cancer cell senescence remain poorly understood. This study explores the underlying mechanisms by which SF3B4 modulates mRNA stability through the NMD pathway and elucidates its role in switching cancer cells between growth and senescence. We demonstrate that SF3B4 deficiency leads to decreased cancer cell proliferation, increased senescence-associated β-galactosidase (SA-β-Gal) activity, p53-independent upregulation of p21 expression, and ultimate induction of cell senescence. We further show that SF3B4 recruits essential NMD factors, including UPF1, MAGOH, and RNPS1, which facilitate mRNA decay of the crucial senescence regulator, p21. Conversely, SF3B4 depletion results in the dissociation of these factors from the 3′UTR of p21 mRNA, thereby enhancing its stability. Collectively, our results suggest that SF3B4 critically regulates p21 expression at the post-transcriptional level, providing insights into the novel role of SF3B4 in regulating p21 mRNA stability, interacting with key NMD factors, and modulating cancer cell senescence.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"615 ","pages":"Article 217530"},"PeriodicalIF":9.1,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perineural invasion in cervical cancer","authors":"Xiayi Li ,&nbsp;Xiaojing Yang ,&nbsp;Shuchen Lin ,&nbsp;Hui Cong ,&nbsp;Yawen Liu ,&nbsp;Yudong Wang ,&nbsp;Jie Fu","doi":"10.1016/j.canlet.2025.217561","DOIUrl":"10.1016/j.canlet.2025.217561","url":null,"abstract":"<div><div>Perineural invasion (PNI), the neoplastic infiltration of peripheral nerves, is recognized as the fourth mode of tumor metastasis and invasion. PNI is defined as a critical pathological feature observed across various cancers and is associated with poor prognosis. Recent studies have demonstrated that PNI also occurs in cervical cancer. Nerve-sparing radical hysterectomy (NSRH) has been promoted as the preferred approach for radical surgical resection of cervical cancer, as it reduces postoperative complications such as bladder, rectal, and sexual dysfunction. However, the presence of PNI has become a contraindication for NSRH. Despite the increasing volume of studies on PNI, the underlying mechanisms of its pathogenesis remain largely unclear. In this review, we discuss the innervation, characteristics, preoperative prediction and diagnosis of PNI in cervical cancer, along with its underlying mechanism, paving the way for advancements in treatment strategies and improving the prognosis for cervical cancer patients.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"616 ","pages":"Article 217561"},"PeriodicalIF":9.1,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143432402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The expression level of EVI1 and clinical features help to distinguish prognostic heterogeneity in the AML entity with EVI1 overexpression","authors":"Xiao-Hang Ma ,&nbsp;Meng-Ge Gao ,&nbsp;Rong-Qi Cheng ,&nbsp;Ya-Zhen Qin ,&nbsp;Wen-Bing Duan ,&nbsp;Hao Jiang ,&nbsp;Xiao-Jun Huang ,&nbsp;Xiao-Su Zhao","doi":"10.1016/j.canlet.2025.217547","DOIUrl":"10.1016/j.canlet.2025.217547","url":null,"abstract":"<div><div>Acute myeloid leukemia (AML) with 3q26 rearrangements results in a poor prognosis and typically causes ecotropic viral integration site1 (<em>EVI1</em>) overexpression (<em>EVI1</em>oe); however, many AML patients with <em>EVI1</em>oe have undetected 3q26 rearrangements. The aim of this study was to restratify AML patients with <em>EVI1</em>oe. We retrospectively reviewed the diagnostic outcomes of 1327 patients tested at our institute from November 2015 to December 2022. A total of 468 de novo AML patients were included, with 191 classified as <em>EVI1</em>oe. Eighteen AML patients with <em>EVI1</em>oe had detectable 3q26 rearrangements and had significantly greater <em>EVI1</em> expression levels than those without rearrangements. A new cutoff value for <em>EVI1</em>oe in AML patients of 122 % was determined using the ROC curve based on overall survival (OS) and effectively distinguished the prognosis of <em>EVI1</em>oe AML patients without detectable 3q26 rearrangements (p = 0.0051 and 0.0039, respectively). Using this cutoff value, ELN stratification, transplantation status, response to induction therapy, and bone marrow blast percentage, we constructed a nomogram model (C-index = 0.808). This model was used to stratify patients into two risk subgroups, with the low-risk subgroup showing better OS than the high-risk subgroup did (p &lt; 0.001 in the training cohort; p = 0.002 in the validation cohort). In conclusion, AML patients with <em>EVI1</em>oe have heterogeneous prognoses. The use of <em>EVI1</em> expression levels in combination with other risk factors may enable accurate prognostic stratification of AML patients with <em>EVI1</em>oe.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"615 ","pages":"Article 217547"},"PeriodicalIF":9.1,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143432422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Malignant tumors in vagal-innervated organs: Exploring its homeostatic role","authors":"Pierrick Martinez ,&nbsp;Jean-Marc Sabatier","doi":"10.1016/j.canlet.2025.217539","DOIUrl":"10.1016/j.canlet.2025.217539","url":null,"abstract":"<div><div>Cancer remains a significant global health challenge, with its progression shaped by complex and multifactorial mechanisms. Recent research suggests that the vagus nerve could play a critical role in mediating communication between the tumor microenvironment and the central nervous system (CNS). This review highlights the diversity of vagal afferent receptors, which could position the vagus nerve as a unique pathway for transmitting immune, metabolic, mechanical, and chemical signals from tumors to the CNS. Such signaling could influence systemic disease progression and tumor-related responses. Additionally, the vagus nerve's interactions with the microbiome and the renin-angiotensin system (RAS)—both implicated in cancer biology—further underscore its potential central role in modulating tumor-related processes. Contradictions in the literature, particularly concerning vagal fibers, illustrate the complexity of its involvement in tumor progression, with both tumor-promoting and tumor-suppressive effects reported depending on cancer type and context. These contradictions often overlook certain experimental biases, such as the failure to distinguish between vagal afferent and efferent fibers during vagotomies or the localized parasympathetic effects that cannot always be extrapolated to the systemic level. By focusing on the homeostatic role of the vagus nerve, understanding these mechanisms could open the door to new perspectives in cancer research related to the vagus nerve and lead to potential therapeutic innovations.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"617 ","pages":"Article 217539"},"PeriodicalIF":9.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143425036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RSK2-mediated phosphorylation and degradation of UBE2O inhibits hepatocellular carcinoma growth and resistance to radiotherapy","authors":"Yumei Huang ,&nbsp;Anchen Qiu ,&nbsp;Yimei Meng ,&nbsp;Ming Lin ,&nbsp;Yunhong Xu ,&nbsp;Liu Yang","doi":"10.1016/j.canlet.2025.217558","DOIUrl":"10.1016/j.canlet.2025.217558","url":null,"abstract":"<div><div>Radioresistance poses the main challenge in radiation therapy (RT) for liver cancer, with the DNA Damage response (DDR) being a crucial component of this resistance. Ubiquitin-conjugating enzyme E2O (UBE2O) has been implicated in regulating tumor proliferation, cholesterol metabolism, and drug resistance. However, the role of the ubiquitin-conjugating enzyme E2O (UBE2O) in DDR of liver cancer remains to be fully explored. We discovered an elevated expression of UBE2O within liver cancer tissues, which was notably associated with unfavorable prognoses in hepatocellular carcinoma (HCC) patients. Furthermore, we found that the suppression of UBE2O can effectively reduce the growth and resistance to radiotherapy of HCC cells <em>in vitro</em> and <em>in vivo</em>. Moreover, p90 ribosomal S6 kinase2 (RSK2) was confirmed as a novel interacting kinase of UBE2O, which mediated the phosphorylation and degradation of UBE2O at the Thr838 site. RSK2 inhibition promotes tumor proliferation and resistance to radiotherapy of HCC cells <em>in vitro</em> and <em>in vivo</em>, and these effects are abrogated upon UBE2O knockdown. Collectively, our work revealed that UBE2O promotes tumor progression and resistance to radiotherapy, which was negatively regulated by RSK2 for phosphorylation and degradation, indicating that the RSK2/UBE2O axis provides a potential radiosensitization target for HCC patients.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"615 ","pages":"Article 217558"},"PeriodicalIF":9.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143425057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multimodal radiopathological integration for prognosis and prediction of adjuvant chemotherapy benefit in resectable lung adenocarcinoma: A multicentre study","authors":"Huan Lin ,&nbsp;Junjie Hua ,&nbsp;Zhengze Gong ,&nbsp;Mingwei Chen ,&nbsp;Bingjiang Qiu ,&nbsp;Yuxin Wu ,&nbsp;Wenfeng He ,&nbsp;Yumeng Wang ,&nbsp;Zhengyun Feng ,&nbsp;Yanting Liang ,&nbsp;Wansheng Long ,&nbsp;Ronggang Li ,&nbsp;Qionglian Kuang ,&nbsp;Yingxin Chen ,&nbsp;Jiawei Lu ,&nbsp;Shiwei Luo ,&nbsp;Wei Zhao ,&nbsp;Lixu Yan ,&nbsp;Xin Chen ,&nbsp;Zhenwei Shi ,&nbsp;Zaiyi Liu","doi":"10.1016/j.canlet.2025.217557","DOIUrl":"10.1016/j.canlet.2025.217557","url":null,"abstract":"<div><div>Lung adenocarcinoma (LUAD) has a heterogeneous prognosis and controversial postoperative treatment protocols. We aim to develop and validate a multimodal analysis framework that integrates CT images with H&amp;E-stained whole-slide images (WSIs) to enhance risk stratification and predict adjuvant chemotherapy benefit in LUAD patients. We retrospectively collected data from 1039 resectable LUAD patients (stage I–III) across four centres, forming a training dataset (n = 303), two testing datasets (n = 197 and n = 228) for survival analysis, and a feature testing dataset (n = 311) for interpretability analysis. We extracted 487 tumour/peritumour radiomics features from CT images and 783 multiscale pathomics features from WSIs, characterising the shape of tumour (CT) and cancer nuclei (WSIs), as well as the intensity and texture of tumour/peritumour regions (CT) and tumour regions/epithelium/stroma (WSIs). A survival support vector machine (SVM) was employed to establish a radiopathomics signature using the optimal set of multimodal features, including 2 tumour radiomics features, 3 peritumour radiomics features, and 4 nuclei heterogeneity pathomics features. The radiopathomics signature outperformed both radiomics and pathomics signatures in predicting disease-free survival (DFS) (C-index: training dataset, 0.744 vs. 0.734 and 0.692; testing dataset 1, 0.719 vs. 0.701 and 0.638; testing dataset 2, 0.711 vs. 0.689 and 0.684), demonstrating greater robustness compared to the state-of-the-art deep learning integration approaches. It provided additional prognostic information beyond clinical risk factors (C-index of clinical plus radiopathomics vs. clinical models: training dataset, 0.763 vs. 0.676; testing dataset 1, 0.739 vs. 0.676; testing dataset 2, 0.711 vs. 0.699, p &lt; 0.001). Compared to low-risk patients categorised by the radiopathomics signature, high-risk patients achieved comparable DFS when receiving adjuvant chemotherapy (training dataset, HR = 1.53, 95 % CI 0.85–2.73, p = 0.153; testing dataset 1 and 2, HR = 1.62, 95 % CI 0.92–2.85, p = 0.096), but had significantly worse DFS when only observed after surgery (training dataset, HR = 4.46, 95 % CI 2.82–7.05, p &lt; 0.001; testing datasets 1 and 2, HR = 3.52, 95 % CI 2.26–5.49, p &lt; 0.001), indicating the predictive value of the radiopathomics signature for adjuvant chemotherapy benefit (interaction p &lt; 0.05). Further interpretability analysis revealed that the radiopathomics signature was associated with various prognostic/treatment-related biomarkers, including differentiation, immune phenotypes, and EGFR status. The multimodal integration framework offered a cost-effective approach for LUAD characterisation by leveraging complementary information from radiological and histopathological imaging. The radiopathomics signature demonstrated robust prognostic capabilities, providing valuable insights for postoperative treatment decisions.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"616 ","pages":"Article 217557"},"PeriodicalIF":9.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143425055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EBF1-induced CSRP2 boosts the progression of B-cell acute lymphocytic leukemia by inhibiting ferroptosis","authors":"Chengcheng Liu ,&nbsp;Gexiu Liu ,&nbsp;Fenling Zhou ,&nbsp;Lu Chen ,&nbsp;Boyang Chang ,&nbsp;Hailin Tang ,&nbsp;Hua Wang","doi":"10.1016/j.canlet.2025.217556","DOIUrl":"10.1016/j.canlet.2025.217556","url":null,"abstract":"<div><div>B-cell acute lymphocytic leukemia (B-ALL) is a highly aggressive malignancy with poor prognosis. Developing diagnostic markers and therapeutic targets to identify and treat B-ALL early would improve the outcomes of B-ALL patients. Here, we conducted RNA next-generation sequencing using bone marrow (BM) specimens obtained from 7 B-ALL patients and 7 healthy donors. We found cysteine and glycine-rich protein 2 (CSRP2) upregulated in B-ALL. Down-regulation of CSRP2 resulted in suppressed cell proliferation and enhanced cell apoptosis in B-ALL. In addition, inhibition of CSRP2 increased cell ferroptosis in B-ALL cells. Mechanically, we revealed that transcription factor early B cell factor 1 (EBF1) regulated CSRP2 levels in B-ALL, and inhibition of EBF1 decreased CSRP2 levels in B-ALL. In conclusion, the dysregulation EBF1 led to CSRP2 upregulation and resulting in progression of B-ALL. The EBF1/CSRP2 axis could be of great potential as therapeutic targets for B-ALL treatment.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"614 ","pages":"Article 217556"},"PeriodicalIF":9.1,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The development and potent antitumor efficacy of CD44/CD133 dual-targeting IL7Rα-armored CAR-T cells against glioblastoma","authors":"You Zhai ,&nbsp;Guanzhang Li ,&nbsp;Changqing Pan ,&nbsp;Mingchen Yu ,&nbsp;Huimin Hu ,&nbsp;Di Wang ,&nbsp;Zhongfang Shi ,&nbsp;Tao Jiang ,&nbsp;Wei Zhang","doi":"10.1016/j.canlet.2025.217541","DOIUrl":"10.1016/j.canlet.2025.217541","url":null,"abstract":"<div><div>Tumor heterogeneity and an immunosuppressive microenvironment pose significant challenges for immunotherapy against solid tumors, particularly glioblastoma multiforme (GBM). Recent studies have highlighted the crucial role of glioma stem cells (GSCs) in tumor recurrence and therapeutic resistance. In this context, we developed a tandem chimeric antigen receptor (CAR)-T cell targeting CD44 and CD133 (PROM1), containing a truncated IL-7 receptor alpha intracellular domain (Δ7R) between the CD28 costimulatory receptor and the CD3ζ signaling chain (Tanζ-T28-Δ7R). Our target identification and validation were carried out using GSCs, samples from GBM patients, and the corresponding sequencing data. The antitumor efficacy of CAR-T cells was evaluated in patient-derived GSCs, intracranial xenograft models, patient-derived xenograft models, and glioblastoma organoids (GBOs). Single-cell RNA sequencing and mass cytometry were used to determine the immune phenotypes of CAR-T cells. We showed that locoregionally administered Tanζ-T28-Δ7R CAR-T cells induced long-term tumor regression with the desired safety outcomes. Patient-derived autologous Tanζ-T28-Δ7R CAR-T cells showed robust antitumor activity against GBOs. Our pre-clinical data has demonstrated the translational potential of Tanζ-T28-Δ7R CAR-T cell against GBM.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"614 ","pages":"Article 217541"},"PeriodicalIF":9.1,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143425058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective removal of proteins and microvesicles ex vivo from blood of pancreatic cancer patients using bioengineered adsorption filters","authors":"Richard T. Waldron ,&nbsp;Ruoxiang Wang ,&nbsp;Stephanie N. Shishido ,&nbsp;Aurelia Lugea ,&nbsp;Ahmed G. Ibrahim ,&nbsp;Jeremy Mason ,&nbsp;Matthew Ayres ,&nbsp;Sarah J. Parker ,&nbsp;Jennifer E. Van Eyk ,&nbsp;Simon K. Lo ,&nbsp;Peter Kuhn ,&nbsp;Stephen J. Pandol","doi":"10.1016/j.canlet.2025.217546","DOIUrl":"10.1016/j.canlet.2025.217546","url":null,"abstract":"<div><div>Metastatic pancreatic ductal adenocarcinoma (PDAC) is a deadly disease with limited efficacious therapeutic options. Recent investigations have provided proof of concept that circulating tumor cells (CTCs) are reduced by purification of PDAC patient blood samples through ExThera Seraph100™ adsorption filters. Whether additional tumorigenic factors are also removed remains inadequately studied. Here, matched whole blood and purified blood samples from seven PDAC patients were analyzed for microparticle and soluble protein content. For microparticle analysis, patient samples were stratified by abundance. Filters markedly reduced ∼200-nm particles when in high abundance. Exosomes, or vesicles ranging from ∼50 to 150-nm were not significantly affected by the purification process. Proteomic analysis of plasma from the whole and purified blood revealed only a limited number of differentially expressed proteins. The complement C1Q proteins were reduced by the purification process, likely due to their heparin binding affinity. In contrast, there was an elevation in cytoplasmic proteins after purification, which may be due to cell destruction. Taken together, this study shows the selective removal of a subfraction of larger (&gt;200 nm) microvesicles and C1Q during blood purification by the Seraph100™. The clinical significance of these findings requires further study.</div></div>","PeriodicalId":9506,"journal":{"name":"Cancer letters","volume":"614 ","pages":"Article 217546"},"PeriodicalIF":9.1,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}