RNF43 p.G659fs 通过 PI3K/AKT/mTOR 信号通路和 HLA-E 上调导致 MSI-high 结直肠癌中 NK 细胞功能障碍
RNF43 p.G659fs leads to natural killer cell dysfunction in MSI-high colorectal cancer through PI3K/AKT/mTOR signaling and HLA-E up-regulation.
CELL INTELLIGENCE · 肿瘤细胞治疗研究
肿瘤细胞治疗研究
英文原题:Cordycepin Enhances the Cytotoxicity of Human Natural Killer Cells against Cancerous Cells.
Cordycepin Enhances the Cytotoxicity of Human Natural Killer Cells against Cancerous Cells.
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自然杀伤(NK)细胞免疫疗法用于癌症治疗具有良好前景。NK 细胞无需预先致敏即可识别并杀伤癌细胞,因此可能成为癌症治疗的替代方案。为提高临床疗效和安全性,仍需开展更多研究。增强 NK 细胞功能可提升治疗效果。Cordycepin(虫草素)是虫草属真菌中的一种生物活性化合物,可强效诱导细胞凋亡并抑制癌细胞生长。虫草素还具有免疫调节特性,是与 NK 细胞免疫疗法联合应用的有前景候选药物;它可能增强 NK 细胞功能并具有临床应用潜力,但仍需更多研究。
本研究发现,虫草素处理 NK-92 MI 细胞可提高其对 THP-1 和 U-251 细胞的细胞毒性。虫草素还显著提高编码细胞因子的基因 mRNA 表达,包括肿瘤坏死因子(TNF)、干扰素 γ(IFNG)和白细胞介素 2(IL2)。NK-92 MI 细胞分泌的 IFNG 和 granzyme B 也显著增加。
此外,虫草素降低 NK-92 MI 细胞中的 CD27 表达,并提高 CD11b、CD16 和 NKG2D 表达,从而增强其抗癌能力。
总之,本研究首次显示虫草素可增强 NK 细胞对癌细胞的细胞毒性,支持其作为抗癌免疫活性替代药物的潜力。仍需进一步研究其在临床环境中的疗效和安全性。
Cancer treatment with natural killer (NK) cell immunotherapy is promising. NK cells can recognize and kill cancer cells without sensitization, making them a potential cancer treatment alternative. To improve clinical efficacy and safety, more research is needed. Enhancing NK cell function improves therapeutic efficacy. Due to its potent apoptosis induction, Cordycepin, a bioactive compound from Cordyceps spp. , inhibits cancer cell growth. Cordycepin has immunoregulatory properties, making it a promising candidate for combination therapy with NK cell-based immunotherapy.
Cordycepin may enhance NK cell function and have clinical applications, but more research is needed. In this study, cordycepin treatment of NK-92 MI cells increased THP-1 and U-251 cell cytotoxicity.
Cordycepin also significantly increased the mRNA expression of cytokine-encoding genes, including tumour necrosis factor (TNF), interferon gamma (IFNG), and interleukin 2 (IL2). NK-92 MI cells notably secreted more IFNG and granzyme B. Cordycepin also decreased CD27 and increased CD11b, CD16, and NKG2D in NK-92 MI cells, which improved its anti-cancer ability.
In conclusion, cordycepin could enhance NK cell cytotoxicity against cancerous cells for the first time, supporting its use as an alternative immunoactivity agent against cancer cells.
Further studies are needed to investigate its efficacy and safety in clinical settings.
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