華中科技大學孫朝陽等研究人員合作發(fā)現(xiàn),宮頸鱗狀細胞癌的多組學分析確定具有生物學和臨床意義的細胞生態(tài)系統(tǒng)。相關(guān)論文于2023年11月20日在線發(fā)表在《自然—遺傳學》雜志上。
研究人員進行了一項多組學分析,包括單細胞RNA測序、空間轉(zhuǎn)錄組學和空間蛋白質(zhì)組學,并結(jié)合遺傳學和藥理學擾動,系統(tǒng)地繪制了一張高分辨率和空間分辨的宮頸鱗狀細胞癌(CSCC)瘤內(nèi)表達異質(zhì)性圖譜。
三種腫瘤狀態(tài)(上皮-細胞角蛋白、上皮-免疫(Epi-Imm)和上皮衰老)再現(xiàn)了鱗狀細胞分化的不同階段,顯示出不同的腫瘤免疫微環(huán)境。上皮-細胞角蛋白惡性細胞與免疫抑制性癌相關(guān)成纖維細胞之間的雙向相互作用通過FABP5介導的轉(zhuǎn)化生長因子β通路信號形成了免疫排斥性微環(huán)境。在Epi-Imm腫瘤中,惡性細胞通過干擾素信號與自然殺傷細胞和T細胞相互作用。對一項宮頸癌臨床試驗(NCT04516616)樣本的初步分析表明,新輔助化療會誘導腫瘤向Epi-Imm狀態(tài)轉(zhuǎn)變,這與免疫檢查點阻斷劑治療后的病理完全緩解相關(guān)。這些發(fā)現(xiàn)加深了人們對CSCC細胞狀態(tài)多樣性的理解。
研究人員表示,CSCC對免疫檢查點阻斷的反應(yīng)有限。
附:英文原文
Title: Multiomic analysis of cervical squamous cell carcinoma identifies cellular ecosystems with biological and clinical relevance
Author: Fan, Junpeng, Lu, Funian, Qin, Tianyu, Peng, Wenju, Zhuang, Xucui, Li, Yinuo, Hou, Xin, Fang, Zixuan, Yang, Yunyi, Guo, Ensong, Yang, Bin, Li, Xi, Fu, Yu, Kang, Xiaoyan, Wu, Zimeng, Han, Lili, Mills, Gordon B., Ma, Xiangyi, Li, Kezhen, Wu, Peng, Ma, Ding, Chen, Gang, Sun, Chaoyang
Issue&Volume: 2023-11-20
Abstract: Cervical squamous cell carcinoma (CSCC) exhibits a limited response to immune-checkpoint blockade. Here we conducted a multiomic analysis encompassing single-cell RNA sequencing, spatial transcriptomics and spatial proteomics, combined with genetic and pharmacological perturbations to systematically develop a high-resolution and spatially resolved map of intratumoral expression heterogeneity in CSCC. Three tumor states (epithelial-cytokeratin, epithelial-immune (Epi-Imm) and epithelial senescence), recapitulating different stages of squamous differentiation, showed distinct tumor immune microenvironments. Bidirectional interactions between epithelial-cytokeratin malignant cells and immunosuppressive cancer-associated fibroblasts form an immune exclusionary microenvironment through transforming growth factor β pathway signaling mediated by FABP5. In Epi-Imm tumors, malignant cells interact with natural killer and T cells through interferon signaling. Preliminary analysis of samples from a cervical cancer clinical trial (NCT04516616) demonstrated neoadjuvant chemotherapy induces a state transition to Epi-Imm, which correlates with pathological complete remission following treatment with immune-checkpoint blockade. These findings deepen the understanding of cellular state diversity in CSCC.
來源:科學網(wǎng)
原標題:宮頸鱗狀細胞癌的多組學分析確定具有生物學和臨床意義的細胞生態(tài)系統(tǒng)
作者:小柯機器人
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