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Eradication of CD48-positive tumors by selectively enhanced YTS cells harnessing the lncRNA NeST
iScience ( IF 4.6 ) Pub Date : 2023-07-05 , DOI: 10.1016/j.isci.2023.107284
Rebecca Kotzur 1 , Natan Stein 1 , Shira Kahlon 1 , Orit Berhani 1 , Batya Isaacson 1 , Ofer Mandelboim 1
Affiliation  

Natural killer (NK) cells are currently used in clinical trials to treat tumors. However, such therapies still suffer from problems such as donor variability, reproducibility, and more, which prevent a wider use of NK cells therapeutics. Here we show a potential immunotherapy combining NK cell-mediated tumor eradiation and long non-coding (lnc) RNAs. We overexpressed the interferon (IFN) secretion-enhancing lncRNA nettoie Salmonella pas Theiler’s (NeST) in the NK cell-like cell line YTS. YTS cells express the co-stimulatory receptor 2B4 whose main ligand is CD48. On YTS cells, 2B4 functions by direct activation. We showed that NeST overexpression in YTS cells resulted in increased IFN release upon interaction with CD48 (selectively enhanced (se)YTS cells). Following irradiation, the seYTS cells lost proliferation capacity but were still able to maintain their killing and IFN secretion capacities. Finally, we demonstrated that irradiated seYTS inhibit tumor growth . Thus, we propose seYTS cells as off-the-shelve therapy for CD48-expressing tumors.

中文翻译:

利用 lncRNA NeST 选择性增强 YTS 细胞消灭 CD48 阳性肿瘤

自然杀伤(NK)细胞目前用于治疗肿瘤的临床试验。然而,此类疗法仍然存在供体变异性、重现性等问题,阻碍了 NK 细胞疗法的更广泛应用。在这里,我们展示了一种结合 NK 细胞介导的肿瘤根除和长非编码 (lnc) RNA 的潜在免疫疗法。我们在 NK 细胞样细胞系 YTS 中过表达干扰素 (IFN) 分泌增强 lncRNA nettoie 沙门氏菌 (NeST)。YTS细胞表达共刺激受体2B4,其主要配体是CD48。在 YTS 细胞上,2B4 通过直接激活发挥作用。我们发现,YTS 细胞中 NeST 过表达导致与 CD48(选择性增强的 (se)YTS 细胞)相互作用后 IFN 释放增加。照射后,seYTS 细胞失去增殖能力,但仍能保持其杀伤和 IFN 分泌能力。最后,我们证明了辐照seYTS 抑制肿瘤生长。因此,我们建议将 seYTS 细胞作为表达 CD48 的肿瘤的现成疗法。
更新日期:2023-07-05
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