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Targeting STING elicits GSDMD-dependent pyroptosis and boosts anti-tumor immunity in renal cell carcinoma 靶向STING诱导gsdmd依赖性焦亡并增强肾细胞癌的抗肿瘤免疫。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2026-01-04 DOI: 10.1038/s41388-025-03671-y
Shengpan Wu, Baojun Wang, Hongzhao Li, Hanfeng Wang, Songliang Du, Xing Huang, Yang Fan, Yu Gao, Liangyou Gu, Qingbo Huang, Jianjun Chen, Xu Zhang, Yan Huang, Xin Ma
While Stimulator-of-interferon genes (STING) is an innate immune adapter crucial for sensing cytosolic DNA and modulating immune microenvironment, its tumor-promoting role in tumor survival and immune evasion remains largely unknown. Here we reported that renal cancer cells are exceptionally dependent on STING for survival and evading immunosurveillance via suppressing ER stress-mediated pyroptosis. We found that STING is significantly amplified and upregulated in clear cell renal cell carcinoma (ccRCC), and its elevated expression is associated with worse clinical outcomes. Mechanically, STING depletion in RCC cells specifically triggers activation of the PERK/eIF2α/ATF4/CHOP pathway and activates cleavage of Caspase-8, thereby inducing GSDMD-mediated pyroptosis, which is independent of the innate immune pathway of STING. Moreover, animal study results revealed that STING depletion promoted infiltration of CD4+ and CD8+ T cells, consequently boosting robust antitumor immunity via pyroptosis-induced inflammation. From the perspective of targeted therapy, we found that Compound SP23, a PROTAC STING degrader, demonstrated comparable efficacy to STING depletion both in vitro and in vivo for treatment of ccRCC. These findings collectively unveiled an unforeseen function of STING in regulating GSDMD-dependent pyroptosis, thus regulating immune response in RCC. Consequently, pharmacological degradation of STING by SP23 may become an attractive strategy for treatment of advanced RCC.
虽然干扰素刺激因子基因(STING)是一种先天免疫适配器,对感知胞质DNA和调节免疫微环境至关重要,但其在肿瘤存活和免疫逃避中的促肿瘤作用仍未得到充分的了解。在这里,我们报道了肾癌细胞异常依赖STING生存,并通过抑制内质网应激介导的焦亡来逃避免疫监视。我们发现,STING在透明细胞肾细胞癌(ccRCC)中显著扩增和上调,其表达升高与较差的临床结果相关。机械上,RCC细胞中STING的缺失特异性触发PERK/eIF2α/ATF4/CHOP通路的激活,激活Caspase-8的裂解,从而诱导gsdmd介导的焦亡,而这与STING的先天免疫通路无关。此外,动物研究结果显示,STING耗竭促进CD4+和CD8+ T细胞的浸润,从而通过焦热诱导的炎症增强强大的抗肿瘤免疫。从靶向治疗的角度来看,我们发现复方SP23,一种PROTAC STING降解剂,在体外和体内治疗ccRCC的疗效与STING耗尽相当。这些发现共同揭示了STING在调节gsdmd依赖性焦亡中的一个意想不到的功能,从而调节RCC的免疫反应。因此,SP23对STING的药理降解可能成为治疗晚期RCC的一种有吸引力的策略。
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引用次数: 0
The role of the SLC25A15 transporter in the formation of liver metastasis in ESR1-mutated breast cancer SLC25A15转运体在esr1突变乳腺癌肝转移形成中的作用
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2026-01-03 DOI: 10.1038/s41388-025-03640-5
Marwa Taya, Daniel Fishman, Fahim Kanani, Lotem Zinger, Keren Merenbakh-Lamin, Shaked Elfasi Sosner, Anil Khushalrao Shendge, Anat Klein Goldberg, Uri Wolf, Galit Winkler, Eric Shifrut, Shmuel Cohen, Ido Wolf, Israel Sekler, Tami Rubinek
Activating mutations in the ligand-binding domain of the estrogen receptor (ER)-encoding (ESR1) gene are present in up to 40% of metastatic breast cancer (BC) patients and are strongly associated with a high risk of liver metastasis (LM) formation. Using the MCF-7 BC model, we investigated whether the increased hepatic tropism of ESR1-mutated BC cells is driven by their metabolic adaptation to the liver microenvironment. Indeed, metabolomic analysis revealed elevated metabolites related to the urea cycle (UC) in LM-forming ESR1-mutated cells compared to wild-type (WT) ER-expressing cells, which failed to generate LM. The subsequent proteomic, western blotting, and qPCR analyses demonstrated a dramatic upregulation of the UC constituent, the mitochondrial ornithine/citrulline transporter SLC25A15, in liver-predilected ESR1-mutated cells relative to their WT counterpart cells. Unlike WT cells, ESR1-mutated cells readily formed spheroids and exhibited enhanced migration in liver mimicking hepatocyte-conditioned media. In addition, we employed a novel ex vivo approach where ESR1 mutated cells were seeded onto colonized fresh liver tissue—which was abolished by SLC25A15 knockout. Moreover, SLC25A15 knockout robustly reduced the ability of ESR1-mutated cells to establish LM in vivo. These findings highlight SLC25A15-mediated dysregulation of the UC as a critical driver of BC hepatic metastasis and identify SLC25A15 as a potential therapeutic target for disrupting metastatic spread of BC to the liver.
雌激素受体(ER)编码(ESR1)基因配体结合域的激活突变存在于高达40%的转移性乳腺癌(BC)患者中,并且与肝转移(LM)形成的高风险密切相关。使用MCF-7 BC模型,我们研究了esr1突变的BC细胞的肝向性增加是否由它们对肝脏微环境的代谢适应驱动。事实上,代谢组学分析显示,与野生型(WT) er表达细胞相比,形成LM的esr1突变细胞中与尿素循环(UC)相关的代谢物升高,而野生型(WT) er表达细胞无法产生LM。随后的蛋白质组学、western blotting和qPCR分析表明,与WT对应的细胞相比,肝脏选择性esr1突变细胞中的UC成分、线粒体鸟氨酸/瓜氨酸转运体SLC25A15显著上调。与WT细胞不同,esr1突变的细胞在模拟肝细胞条件的培养基中容易形成球状体并表现出增强的迁移。此外,我们采用了一种新颖的离体方法,将ESR1突变细胞播种到定植的新鲜肝组织中,通过敲除SLC25A15来消除。此外,SLC25A15敲除显著降低了esr1突变细胞在体内建立LM的能力。这些发现强调了SLC25A15介导的UC失调是BC肝转移的关键驱动因素,并确定SLC25A15是破坏BC转移到肝脏的潜在治疗靶点。
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引用次数: 0
PDZRN4 suppresses lung adenocarcinoma progression via inhibiting ubiquitin-mediated HIF-1A degradation PDZRN4通过抑制泛素介导的HIF-1A降解来抑制肺腺癌的进展。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-29 DOI: 10.1038/s41388-025-03670-z
Honghao Li, Junfeng Wu, Hua Dai, Jiaming Li, Xiaoyan Bai, Yueli Sun, Jiaxin Lin, Yangsi Li, Peng Li, Lingchao Shi, Zhen Wang, Haiyan Tu, Ee Ke
Indolent lung cancer is characterized by slow progression, and the patient may die of other causes before it becomes symptomatic. The increasing usage of lung cancer screening technologies has increased the detection of early-stage cancers, improved survival, and reduced mortality, but it also brings overdiagnosis or overtreatment for indolent lung cancer patients. In this study, we performed high-throughput whole-exome sequencing in lung adenocarcinoma (LUAD) patients with a tumor doubling time of more than 600 days (the indolent group) and another group with a tumor doubling time of less than 30 days (the aggressive group). We identified a novel germline variation in PDZRN4, rs74955204 (p.G121E, c.362 G > A) in the indolent group. The rs74955204 variant resulted in upregulated PDZRN4 expression and was positively correlated with the survival of LUAD patients. We confirmed that overexpression of PDZRN4 inhibits the ubiquitylation of HIF-1A mediated by TRIM28, thus activating HIF-1A-IGFBP3 signaling to promote apoptosis, and inducing NDRG1 to inhibit EGFR-AKT signaling, restricting lung cancer cell growth in vitro and in vivo. With the EGFRL858R-driven lung cancer mouse model as an example, we found that PDZRN4 knockout promoted, whereas PDZRN4 overexpression suppressed LUAD growth in vivo. In addition, recombinant PDZRN4 or screened small molecules retinoic acid showed potent inhibitory effects on EGFR-driven LUAD growth and amelioration of osimertinib resistance. Overall, our findings suggest that targeted PDZRN4 is a potential therapeutic strategy for treating LUAD. Examination of PDZRN4 rs74955204 variant may be an effective approach for the early detection of indolent lung cancer and to avoid overdiagnosis.
惰性肺癌的特点是进展缓慢,患者可能在出现症状之前死于其他原因。肺癌筛查技术的日益普及,增加了早期癌症的发现,提高了生存率,降低了死亡率,但也给惰性肺癌患者带来了过度诊断或过度治疗。在本研究中,我们对肿瘤加倍时间超过600天的肺腺癌(LUAD)患者(惰性组)和肿瘤加倍时间小于30天的肺腺癌(LUAD)患者(侵袭组)进行了高通量全外显子组测序。我们在惰性组中发现了PDZRN4, rs74955204 (p.G121E, c.362 G > a)的一种新的种系变异。rs74955204变异导致PDZRN4表达上调,与LUAD患者的生存呈正相关。我们在体外和体内证实,PDZRN4过表达可抑制TRIM28介导的HIF-1A泛素化,从而激活HIF-1A- igfbp3信号通路促进细胞凋亡,诱导NDRG1抑制EGFR-AKT信号通路,限制肺癌细胞生长。以egfrl858r驱动的肺癌小鼠模型为例,我们发现PDZRN4敲除促进体内LUAD的生长,而PDZRN4过表达抑制体内LUAD的生长。此外,重组PDZRN4或筛选的小分子维甲酸对egfr驱动的LUAD生长和改善奥西替尼耐药性有明显的抑制作用。总之,我们的研究结果表明,靶向PDZRN4是治疗LUAD的潜在治疗策略。检测PDZRN4 rs74955204变异可能是早期发现惰性肺癌,避免过度诊断的有效途径。摘要PDZRN4的种系变异rs74955204 (p.G121E, c.g 362 G > A)显著上调PDZRN4的表达,导致LUAD的惰性生长。过表达的PDZRN4可抑制TRIM28对HIF-1A的泛素化,激活HIF-1A- igfbp3信号通路促进细胞凋亡,诱导NDRG1抑制EGFR-AKT信号通路,从而限制肺癌细胞生长。
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引用次数: 0
NAT10 triggers colorectal cancer progression via promoting PPAN-regulated DNA damage repair NAT10通过促进ppan调节的DNA损伤修复来触发结直肠癌的进展。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-27 DOI: 10.1038/s41388-025-03661-0
Haoran Wang, Lichen Ge, Jianing Li, Ke Zhong, Shanzhi Li, Ningjing Ma, Lijun Tao, Jiawang Zhou, Zhaotong Wang, Xing Chang, Yunqing Lu, Yalan Rui, Guoyou Xie, Weifeng Yang, Zuanzong Xu, Abdulaziz Ahmed A. Saad, Xiansong Wang, Zhuojia Chen, Wanglin Li, Cheng Yi, Hongsheng Wang, Kun Zhang
RNA modification recognition proteins are crucial in cancer development and progression. Among all RNA modification-related proteins (RMRPs), Weighted Gene Co-expression Network Analysis (WGCNA), combined with comprehensive bioinformatic analysis, suggests that NAT10—the sole known writer of N4-acetylcytidine (ac4C)—is a critical regulatory protein in colorectal cancer (CRC) progression. NAT10 facilitates the malignancy phenotypes and DNA damage repair in CRC cells via its ac4C transferase activity and regulation of PPAN. Specifically, NAT10 enhances the translation efficiency of PPAN via acetylation at the C744 and C747 sites. In addition, NAT10 promotes the translation of ac4C-modified MYC mRNA. MYC protein then enhances PPAN transcription through binding to the PPAN promoter. The newly identified ac4C reader protein MYBBP1A mediates NAT10-induced translation of both PPAN and MYC. We further found that VDR binds to the NAT10 promoter to activate its transcription, resulting in the high expression of NAT10 in CRC. Xenograft studies and clinical data confirmed the role of the NAT10-PPAN axis in promoting CRC development and DNA damage repair. Collectively, our study reveals the role and underlying mechanism of mRNA ac4C modification in CRC progression, providing critical potential targets for CRC drug development.
RNA修饰识别蛋白在癌症的发生和发展中是至关重要的。在所有RNA修饰相关蛋白(RMRPs)中,加权基因共表达网络分析(WGCNA)结合综合生物信息学分析表明,n4 -乙酰胞苷(ac4C)的唯一已知作者nat10是结直肠癌(CRC)进展的关键调控蛋白。NAT10通过其ac4C转移酶活性和对PPAN的调节促进CRC细胞的恶性表型和DNA损伤修复。具体来说,NAT10通过在C744和C747位点乙酰化来提高PPAN的翻译效率。此外,NAT10促进ac4c修饰的MYC mRNA的翻译。然后MYC蛋白通过结合PPAN启动子来增强PPAN的转录。新发现的ac4C解读蛋白MYBBP1A介导nat10诱导的PPAN和MYC的翻译。我们进一步发现VDR与NAT10启动子结合激活其转录,导致NAT10在CRC中高表达。异种移植研究和临床数据证实了NAT10-PPAN轴在促进结直肠癌发展和DNA损伤修复中的作用。总之,我们的研究揭示了mRNA ac4C修饰在结直肠癌进展中的作用和潜在机制,为结直肠癌药物开发提供了关键的潜在靶点。
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引用次数: 0
LAMP1 enhances DNA-PKcs-mediated AKT phosphorylation and VEGFC secretion to promote lymph node metastasis in esophageal squamous cell carcinoma LAMP1增强dna - pkcs介导的AKT磷酸化和VEGFC分泌促进食管鳞状细胞癌淋巴结转移。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-20 DOI: 10.1038/s41388-025-03664-x
Yikang Wang, Chang Yuan, Zhichao Liu, Ning Ma, Cong Qi, Boyao Yu, Haizhen Jin, Chenyang Tian, Chunguang Li, Zhigang Li
Lymph node metastasis (LNM) is a major determinant of poor prognosis in esophageal squamous cell carcinoma (ESCC), with patients remaining at high risk of postoperative recurrence in the absence of reliable predictors or effective interventions. To address this unmet clinical need, we perform proteomic and bioinformatic analyses and identify lysosome-associated membrane protein 1 (LAMP1) as a critical driver of LNM in ESCC. LAMP1 is markedly overexpressed in primary tumors that with LNM and correlates with worse survival outcomes across independent cohorts. Gain- and loss-of-function experiments demonstrate that LAMP1 promotes lymphangiogenesis and lymphatic metastasis both in vitro and in vivo. Mechanistically, LAMP1 interacts with DNA-PKcs, mediates AKT activation, leading to VEGFC upregulation and secretion, thereby driving lymphangiogenesis and metastasis. Importantly, treatment with the LAMP1 inhibitor Parishin C significantly suppresses LNM in preclinical ESCC models. These findings uncover a previously unrecognized LAMP1/DNA-PKcs/AKT/VEGFC signaling axis that promotes ESCC progression and highlight LAMP1 as a promising biomarker and therapeutic target for preventing LNM and improving patient outcomes.
淋巴结转移(LNM)是食管鳞状细胞癌(ESCC)预后不良的主要决定因素,在缺乏可靠的预测因素或有效干预措施的情况下,患者术后复发的风险仍然很高。为了解决这一未满足的临床需求,我们进行了蛋白质组学和生物信息学分析,并确定溶酶体相关膜蛋白1 (LAMP1)是ESCC中LNM的关键驱动因素。LAMP1在合并LNM的原发肿瘤中明显过表达,并且在独立队列中与较差的生存结果相关。获得和丧失功能的实验表明,LAMP1在体外和体内都促进淋巴管生成和淋巴转移。在机制上,LAMP1与DNA-PKcs相互作用,介导AKT活化,导致VEGFC上调和分泌,从而驱动淋巴管生成和转移。重要的是,使用LAMP1抑制剂Parishin C治疗可显著抑制临床前ESCC模型中的LNM。这些发现揭示了先前未被识别的LAMP1/DNA-PKcs/AKT/VEGFC信号轴促进ESCC进展,并突出了LAMP1作为预防LNM和改善患者预后的有前途的生物标志物和治疗靶点。
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引用次数: 0
Chromosome centromere copy number amplification associated with exceptional response in HER2-positive metastatic breast cancer patients 染色体着丝粒拷贝数扩增与her2阳性转移性乳腺癌患者的异常反应相关。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-20 DOI: 10.1038/s41388-025-03667-8
Charlotte Andrieu, Jojanneke Stoof, Dalal AlSultan, Laura Ivers, Jose Javier Berenguer Pina, Darko Skrobo, Jo Ballot, Debbie O’Reilly, Denis M. Collins, Alex J. Eustace, Cecily Quinn, Janice M. Walshe, Giuseppe Gullo, Naomi Walsh, John Crown
Metastatic breast cancer (MBC) is generally an incurable neoplasm. A small cohort of patients with HER2-positive MBC, however, achieve such prolonged remission without relapse following anti-HER2 therapy and chemotherapy, that it is speculated they might be cured. The genomes of these patients might provide insights into the underlying mechanisms for their successful treatment. Here, a total of 243 HER2-positive patients diagnosed with MBC between 2000 and 2015 were studied. Of these, 29 patients were identified as exceptional responders (ExR) with an overall survival (OS) > 60 months and no evidence of relapse, 54 patients with an OS > 60 months but who relapsed or developed progressive disease were defined as exceptional survivors (ExS), and 160 patients with an OS < 60 months were identified as short-term responders (STR). Whole-Genome Sequencing and centromere copy number (CCN) analysis was performed on 27 patients (12 ExR; 4 ExS; 11 STR). A significant amplification was observed in the centromeric regions of ExR, exhibiting higher CCN compared to the ExS and STR. Digital PCR validation of chromosome 4 centromere region D4Z1 copy number was not associated with ExR OS. Our results suggest that the amplification of centromere regions are associated with very prolonged remission and survival in patients with HER2-positive MBC.
转移性乳腺癌(MBC)通常是一种无法治愈的肿瘤。然而,一小部分her2阳性MBC患者在抗her2治疗和化疗后获得了如此长时间的缓解而没有复发,推测他们可能被治愈。这些患者的基因组可能为他们成功治疗的潜在机制提供见解。本研究共研究了2000年至2015年间诊断为MBC的243例her2阳性患者。其中,29例患者被确定为特殊应答者(ExR),总生存期(OS)为60个月,无复发迹象,54例患者总生存期(OS)为60个月,但复发或发展为进展性疾病,被定义为特殊幸存者(ExS), 160例患者有OS
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引用次数: 0
Identification of Raptor and GLI1 as USP37 substrates highlight its context-specific function in medulloblastoma cells Raptor和GLI1作为USP37底物的鉴定突出了其在成神经管细胞瘤细胞中的上下文特异性功能。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-18 DOI: 10.1038/s41388-025-03651-2
Ashutosh Singh, Donghang Cheng, Amanda R. Haltom, Yanwen Yang, Tara Dobson, Rashieda Hatcher, Veena Rajaram, Vidya Gopalakrishnan
The USP37 gene encodes a deubiquitylase (DUB), which catalyzes the proteolytic removal of ubiquitin moieties from proteins to modulate their stability, cellular localization or activity. Its expression is downregulated in a subgroup of medulloblastomas driven by constitutive activation of sonic hedgehog (SHH) signaling. Patients with SHH-driven medulloblastomas with elevated expression of the RE1 silencing transcription factor (REST) and reduced expression of USP37 have poor outcomes. In previous studies, we showed sustained proliferation of SHH-medulloblastoma cells due to blockade of terminal cell cycle exit and neuronal differentiation stemming from a failure in USP37-dependent stabilization of its target, the cyclin-dependent kinase inhibitor (CDKI)-p27. This finding suggested a tumor suppressive function for USP37. Interestingly, the current study also uncovered Raptor, a component of the mTORC1 complex, as a novel target of USP37. Under conditions of low-USP37 expression, reduced Raptor stability and mTORC1 activity caused a decline in phosphorylation of 4E-binding protein 1 (4EBP1) and increased its interaction with eukaryotic elongation factor 4E (eIF4E), which is known to inhibit CAP-dependent translation initiation. Surprisingly, a subset of patients with SHH-driven medulloblastomas with elevated expression of USP37 and the Glioma-associated Oncogene 1 (GLI1), also exhibited poor outcomes. Using genetic and biochemical analyses, we showed that USP37-mediated stabilization of GLI1, a terminal effector of SHH signaling, increases pathway activity and upregulates expression of its target oncogene product, CCND1, to drive cell proliferation. These data indicate that USP37 elevation in SHH-driven medulloblastomas has the potential to promote non-canonical activation of SHH signaling. Overall, our findings suggest that USP37 may have context-specific oncogenic and tumor suppressive roles in medulloblastoma cells.
USP37基因编码一种去泛素化酶(DUB),该酶催化蛋白质水解去除泛素部分,从而调节蛋白质的稳定性、细胞定位或活性。在成神经管细胞瘤的一个亚组中,它的表达被sonic hedgehog (SHH)信号的组成性激活所下调。伴有RE1沉默转录因子(REST)表达升高和USP37表达降低的shh驱动型髓母细胞瘤患者预后较差。在之前的研究中,我们发现shh -髓母细胞瘤细胞的持续增殖是由于usp37依赖的靶标细胞周期蛋白依赖性激酶抑制剂(CDKI)-p27的稳定失败而导致细胞周期末退出和神经元分化受阻。这一发现提示USP37具有肿瘤抑制功能。有趣的是,目前的研究还发现了Raptor, mTORC1复合物的一个组成部分,作为USP37的新靶点。在usp37低表达的条件下,Raptor稳定性和mTORC1活性降低导致4E结合蛋白1 (4EBP1)磷酸化下降,并增加其与真核延伸因子4E (eIF4E)的相互作用,已知其抑制cap依赖的翻译起始。令人惊讶的是,一部分shh驱动的髓母细胞瘤患者USP37和胶质瘤相关癌基因1 (GLI1)表达升高,也表现出较差的预后。通过遗传和生化分析,我们发现usp37介导的GLI1 (SHH信号的末端效应物)的稳定可以增加通路活性并上调其靶癌基因产物CCND1的表达,从而驱动细胞增殖。这些数据表明,在SHH驱动的髓母细胞瘤中,USP37的升高有可能促进SHH信号的非典型激活。总之,我们的研究结果表明USP37可能在成神经管细胞瘤细胞中具有上下文特异性的致癌和肿瘤抑制作用。
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引用次数: 0
IRF2BPL transcriptionally regulates IGFBP2 to promote tumor progression and suppresses immune cell infiltration in esophageal squamous cell carcinoma IRF2BPL通过转录调控IGFBP2促进食管鳞状细胞癌的肿瘤进展,抑制免疫细胞浸润。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-18 DOI: 10.1038/s41388-025-03658-9
Yueguang Wu, Heyang Cui, Longlong Wang, Ning Ding, Yongjia Weng, Yikun Cheng, Shanshan Bi, Heng Xiao, Mingwei Gao, Huijuan Liu, Qiqin Song, Weimin Zhang, Yongping Cui
Numerous ubiquitination-related proteases (URPs) have been identified as facilitators of disease progression through the disruption of ubiquitination homeostasis in substrate proteins. Notably, some URPs have exhibited non-classical biological functions. In this study, we experimentally elucidate the role of the E3 ubiquitin ligase IRF2BPL as transcriptional activator that promotes malignant phenotypes in esophageal squamous cell carcinoma (ESCC) and inhibits the infiltration of various immune cells within the tumor microenvironment. Specifically, we found that IRF2BPL is highly expressed in ESCC cells and promotes IGFBP2 transcription, thereby facilitating ESCC development both in vivo and in vitro. Moreover, the chemical drug ONC201 was shown to effectively impede ESCC progression induced by the hyperactive IRF2BPL-IGFBP2 axis in tumor cells. Collectively, our findings verified that the IRF2BPL-IGFBP2 axis plays a critical role in enhancing ESCC progression by increasing the malignancy of ESCC cells and fostering an immune-deficient tumor microenvironment. Targeting the IRF2BPL-IGFBP2 axis may represent a promising therapeutic strategy for ESCC.
许多泛素化相关蛋白酶(URPs)已被确定为通过破坏底物蛋白的泛素化稳态来促进疾病进展的促进者。值得注意的是,一些URPs表现出非经典的生物学功能。在本研究中,我们通过实验阐明了E3泛素连接酶IRF2BPL作为转录激活因子在食管鳞状细胞癌(ESCC)中促进恶性表型的作用,并抑制肿瘤微环境中各种免疫细胞的浸润。具体来说,我们发现IRF2BPL在ESCC细胞中高表达,并促进IGFBP2的转录,从而促进ESCC在体内和体外的发展。此外,化学药物ONC201被证明可以有效阻止肿瘤细胞中由过度活跃的IRF2BPL-IGFBP2轴诱导的ESCC进展。总之,我们的研究结果证实,IRF2BPL-IGFBP2轴通过增加ESCC细胞的恶性程度和培养免疫缺陷的肿瘤微环境,在促进ESCC进展中起着关键作用。靶向IRF2BPL-IGFBP2轴可能是ESCC的一种有前景的治疗策略。
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引用次数: 0
Dual-target CAR-T therapy for ovarian cancer: synergistic targeting of MSLN and B7H3 enhances anti-tumor efficacy and overcomes antigen heterogeneity 卵巢癌双靶点CAR-T治疗:MSLN和B7H3协同靶向增强抗肿瘤疗效,克服抗原异质性
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-17 DOI: 10.1038/s41388-025-03663-y
Feng Ji, Kai Yan, Bo Ding, Yuxin Zhu, Mengchen Rao, Kexing Gao, Hao Lin, Yiyang Shan, Sicong Liu, Zhongdang Xiao, Yang Shen
Ovarian cancer (OC) remains a lethal malignancy with limited treatment options owing to antigen heterogeneity and an immunosuppressive tumor microenvironment (TME). Here, we designed a unique chimeric Antigen Receptor T-Cell (CAR-T) construct (B4M3) that integrates an anti-MSLN scFv linked to the CD3ζ activation domain and an anti-B7H3 scFv linked to the 4-1BB co-stimulatory domain. In vitro, B4M3 CAR-T cells exhibited robust cytotoxicity against OC cell lines with enhanced degranulation (CD107a) and efficient tumor cell killing, even at low effector-to-target ratios. In vivo, B4M3 CAR-T cells significantly inhibited tumor growth and prolonged survival and demonstrated superior tumor infiltration and persistence in OC xenograft models. Imaging mass cytometry (IMC) revealed that B4M3 treatment reshaped the TME, increased cytotoxic T lymphocyte (CTL) infiltration, and reduced regulatory T cells (Tregs). Mechanistically, B4M3 therapy upregulated TGF-β, promoting Th17 differentiation and CTL recruitment, thereby enhancing anti-tumor immunity. Our findings demonstrate that B4M3 CAR-T cells effectively address antigen heterogeneity and enhance therapeutic efficacy in OC, thereby offering a promising strategy for solid tumor immunotherapy.
卵巢癌(OC)仍然是一种致命的恶性肿瘤,由于抗原异质性和免疫抑制肿瘤微环境(TME),治疗选择有限。在这里,我们设计了一种独特的嵌合抗原受体t细胞(CAR-T)结构体(B4M3),该结构体整合了连接CD3ζ激活域的抗msln scFv和连接4-1BB共刺激域的抗b7h3 scFv。在体外,B4M3 CAR-T细胞对OC细胞系表现出强大的细胞毒性,具有增强的脱颗粒(CD107a)和有效的肿瘤细胞杀伤,即使在低效靶比下也是如此。在体内,B4M3 CAR-T细胞显著抑制肿瘤生长和延长存活时间,并在OC异种移植模型中表现出优越的肿瘤浸润和持久性。成像细胞计数(IMC)显示B4M3治疗可重塑TME,增加细胞毒性T淋巴细胞(CTL)浸润,减少调节性T细胞(Tregs)。机制上,B4M3治疗上调TGF-β,促进Th17分化和CTL募集,从而增强抗肿瘤免疫。我们的研究结果表明,B4M3 CAR-T细胞有效地解决了OC的抗原异质性并提高了治疗效果,从而为实体瘤免疫治疗提供了一种有希望的策略。
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引用次数: 0
Unlocking the potential of targeting the angiotensin II type 1 receptor in cancer 释放靶向血管紧张素II型1受体在癌症中的潜力。
IF 7.3 1区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Pub Date : 2025-12-17 DOI: 10.1038/s41388-025-03666-9
David R. Butcher, Christopher N. Parris, Scott J. Crichton, Fiona C. Dempsey, Hussein N. Al-Ali
The renin-angiotensin system is a key regulator of blood pressure homeostasis, with its primary effector, the angiotensin II type 1 receptor (AT1R), mediating vasoconstriction and processes fundamental to cancer progression, including proliferation, angiogenesis, and metastasis. Elevated AT1R expression is consistently linked to poor prognosis and therapeutic resistance across various malignancies. Preclinical studies provide compelling evidence that AT1R activation drives key cancer related processes, while its inhibition by angiotensin receptor blockers (ARBs) suppresses tumour growth, induces apoptosis, reduces angiogenesis, and inhibits metastasis across a wide range of cancer models. Critically, ARBs effectively modulate the tumour microenvironment (TME), alleviating fibrosis, promoting anti-tumour immune cell phenotypes, and enhancing the efficacy of targeted therapies, chemotherapies, and immunotherapies. Despite this strong preclinical evidence and supporting retrospective population studies, clinical translation of ARBs in oncology remains inconsistent, with trials often limited by design, patient heterogeneity, and supra-therapeutic ARB dosages required for acute anti-cancer effects. This review seeks to summarise the current understanding of AT1R’s role in cancer, highlight preclinical and clinical investigations of targeting RAS, and suggest further strategies to unlock its therapeutic potential. Realising the full therapeutic promise of AT1R targeting in oncology requires a multifaceted approach, including the development of innovative delivery systems, such as TME-activated ARBs, and the exploration of advanced therapeutic modalities, such as antibody based AT1R inhibitors. Rigorously designed clinical trials that include biomarker-driven patient stratification to identify responsive cohorts are crucial to define the context-dependent role of AT1R and conclusively establish its clinical utility as a combinatorial strategy to enhance patient outcomes.
肾素-血管紧张素系统是血压稳态的关键调节因子,其主要效应器是血管紧张素II型1受体(AT1R),介导血管收缩和癌症进展的基本过程,包括增殖、血管生成和转移。在各种恶性肿瘤中,AT1R表达升高始终与预后不良和治疗耐药有关。临床前研究提供了令人信服的证据,表明AT1R激活驱动关键的癌症相关过程,而血管紧张素受体阻滞剂(ARBs)对其的抑制可以抑制肿瘤生长,诱导细胞凋亡,减少血管生成,并抑制多种癌症模型的转移。关键是,arb有效调节肿瘤微环境(TME),减轻纤维化,促进抗肿瘤免疫细胞表型,增强靶向治疗、化疗和免疫治疗的疗效。尽管有强有力的临床前证据和支持回顾性人群研究,但ARB在肿瘤学中的临床转化仍然不一致,试验往往受到设计、患者异质性和急性抗癌作用所需的超治疗ARB剂量的限制。本综述旨在总结目前对AT1R在癌症中的作用的理解,重点介绍靶向RAS的临床前和临床研究,并提出进一步的策略来释放其治疗潜力。实现AT1R靶向在肿瘤学中的全部治疗前景需要多方面的方法,包括开发创新的递送系统,如tme激活的arb,以及探索先进的治疗方式,如基于抗体的AT1R抑制剂。严格设计的临床试验,包括生物标志物驱动的患者分层,以确定响应队列,对于定义AT1R的环境依赖作用至关重要,并最终确定其作为一种组合策略的临床效用,以提高患者的预后。
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Oncogene
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