Ovarian Carcinoma-Associated Mesenchymal Stem Cells Arise from Tissue-Specific Normal Stroma.

Ovarian Carcinoma-Associated Mesenchymal Stem Cells Arise from Tissue-Specific Normal Stroma.
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卵巢癌相关的间充质干细胞由组织特异性正常基质产生。

DOI:
10.1002/stem.2932
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发表时间:
2019-03
期刊:
Stem cells (Dayton, Ohio)
影响因子:
--
通讯作者:
Buckanovich RJ
Buckanovich RJ
中科院分区:
其他
文献类型:
--
作者:
Coffman LG;Pearson AT;Frisbie LG;Freeman Z;Christie E;Bowtell DD;Buckanovich RJ

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癌相关间充质干细胞(CA-MSC)是肿瘤微环境(TME)中的关键基质祖细胞。我们先前证明,CA-MSCs差异表达骨形态发生蛋白家族成员,促进肿瘤细胞生长,增加癌症的“干性”和化疗耐药性。在这里,我们使用正常网膜MSC和卵巢CA-MSC的RNA测序来证明CA-MSC基因表达的整体变化。使用这些表达谱,我们创建了一个独特的预测算法来分类CA-MSC。我们的分类器准确区分正常网膜,卵巢和骨髓MSC与卵巢癌CA-MSC。表明广泛的适用性,该模型正确地分类胰腺癌和子宫内膜癌CA-MSC,并区分癌症相关的成纤维细胞与CA-MSC。使用该分类器,我们明确证明卵巢CA-MSC来自肿瘤介导的局部组织MSC的重编程。虽然单独的癌细胞不能诱导CA-MSC表型,但体内卵巢TME可以将网膜或卵巢MSC重编程为促肿瘤发生的CA-MSC(分类器评分>0.96)。体外研究表明,肿瘤分泌因子和缺氧对于诱导CA-MSC表型至关重要。有趣的是,尽管乳腺癌TME可以将骨髓MSC重编程为CA-MSC,但卵巢TME不能,这首次证明肿瘤介导的CA-MSC转化是组织和癌症类型依赖性的。总之,这些发现(a)提供了定义CA-MSC的关键工具,并且(B)突出了癌细胞对不同正常组织的影响,为癌症特异性转移性小生境形成的机制提供了有力的见解。干细胞2019;37:257-269
Carcinoma‐associated mesenchymal stem cells (CA‐MSCs) are critical stromal progenitor cells within the tumor microenvironment (TME). We previously demonstrated that CA‐MSCs differentially express bone morphogenetic protein family members, promote tumor cell growth, increase cancer “stemness,” and chemotherapy resistance. Here, we use RNA sequencing of normal omental MSCs and ovarian CA‐MSCs to demonstrate global changes in CA‐MSC gene expression. Using these expression profiles, we create a unique predictive algorithm to classify CA‐MSCs. Our classifier accurately distinguishes normal omental, ovary, and bone marrow MSCs from ovarian cancer CA‐MSCs. Suggesting broad applicability, the model correctly classifies pancreatic and endometrial cancer CA‐MSCs and distinguishes cancer associated fibroblasts from CA‐MSCs. Using this classifier, we definitively demonstrate ovarian CA‐MSCs arise from tumor mediated reprograming of local tissue MSCs. Although cancer cells alone cannot induce a CA‐MSC phenotype, the in vivo ovarian TME can reprogram omental or ovary MSCs to protumorigenic CA‐MSCs (classifier score of >0.96). In vitro studies suggest that both tumor secreted factors and hypoxia are critical to induce the CA‐MSC phenotype. Interestingly, although the breast cancer TME can reprogram bone marrow MSCs into CA‐MSCs, the ovarian TME cannot, demonstrating for the first time that tumor mediated CA‐MSC conversion is tissue and cancer type dependent. Together these findings (a) provide a critical tool to define CA‐MSCs and (b) highlight cancer cell influence on distinct normal tissues providing powerful insights into the mechanisms underlying cancer specific metastatic niche formation. Stem Cells 2019;37:257–269
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发表时间: 2013-06
影响因子: 5.1
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影响因子: 16.6
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