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二醇D诱导黑色素瘤中的免疫细胞死亡

Thaís Lima de Brito¹, Evelline Araújo Edson¹, Katharine Gurgel Dias Florêncio¹

¹Drug Research and Development Center, Department of Physiology and Pharmacology, School of Medicine, Federal University of Ceara, Ceara, Brazil.

Chemico-biological interactions

|August 3, 2024

概括

甲醇D (TRL) 是一种来自海洋细菌的化合物,有效诱导黑色素瘤细胞的免疫细胞死亡 (ICD). 这种来自海洋的抗癌候选物显示出增强抗瘤免疫反应的潜力.

科学领域:

海洋微生物学海洋微生物学
癌症免疫学癌症免疫学
细胞应激反应细胞应激反应

背景情况:

罗D (TRL) 是一种由Teredinibacter turnerae,一种海洋共生细菌产生的化合物.
免疫性细胞死亡 (ICD) 是引起强大而持久的抗癌免疫反应的关键机制.
接受ICD的瘤细胞可以作为内源性疫苗,激活免疫系统对抗癌症.

研究的目的:

研究Tartrolon D (TRL) 作为免疫细胞死亡 (ICD) 的诱导剂的潜力.
评估TRL对各种癌症细胞系,特别是黑色素瘤的抗增殖作用和ICD诱导性质.

主要方法:

使用SRB测定来评估细胞活力.
流细胞计和免疫阻塞被用来评估细胞应激,细胞死亡,ICD标记物和抗原呈现分子表达.
分析了对TRL治疗的黑色素瘤细胞的反应中的脊髓细胞激活.

主要成果:

在7个瘤细胞系中,TRL表现出显著的抗增殖活性,在转移性黑色素瘤中显著敏感 (IC50:0.071.2μM).
TRL诱导了亡,自和内分泌网膜应激,同时释放了ICD特征的损伤相关分子模式 (DAMPs),包括calreticulin,ERp57,HSP70和HMGB1.
在小鼠中,TRL治疗增强了黑色素瘤细胞上MHC II和CD1d的表达,并刺激了细胞激活.

结论:

通过诱导ICD,TRL表现出强烈的抗癌活性,使其成为黑色素瘤的有希望的海洋衍生治疗候选者.
这些发现强调了TRL能够触发ICD的关键事件并增强抗瘤免疫力的能力.
TRL代表了治疗晚期转移性黑色素瘤的潜在新药,这种疾病的治疗选择有限.

关键词:

抗瘤免疫反应是一种免疫反应.与损伤相关的分子模式.海洋天然产品海洋天然产品发生转移的黑色素瘤.

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