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九种人类白细胞抗原(HLA)I类等位基因对黑色素瘤肿瘤中表达的11种抗原具有全能抗性。

Nine Human Leukocyte Antigen (HLA) Class I Alleles are Omnipotent Against 11 Antigens Expressed in Melanoma Tumors.

作者信息

Georgopoulos Apostolos P, James Lisa M, Sanders Matthew

机构信息

The HLA Research Group, Brain Sciences Center, Department of Veterans Affairs Health Care System, Minneapolis, MN, USA.

Department of Neuroscience, University of Minnesota Medical School, Minneapolis, MN, USA.

出版信息

Cancer Inform. 2024 Aug 27;23:11769351241274160. doi: 10.1177/11769351241274160. eCollection 2024.

DOI:10.1177/11769351241274160
PMID:39206277
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11350539/
Abstract

OBJECTIVE

Host immunogenetics (Human Leukocyte Antigen, HLA) play a critical role in the human immune response to melanoma, influencing both melanoma prevalence and immunotherapy outcomes. Beneficial outcomes hinge on the successful binding of epitopes of melanoma antigens to HLA Class I molecules for an effective engagement of cytotoxic CD8+ lymphocytes and subsequent elimination of the cancerous cell. This study evaluated the binding affinity and immunogenicity of HLA Class I to melanoma tumor antigens to identify alleles best suited to facilitate elimination of melanoma antigens.

METHODS

In this study, we used freely available software tools to determine the binding affinity and immunogenicity of 2462 reported HLA Class I alleles to all linear nonamer epitopes of 11 known antigens expressed in melanoma tumors (TRP2, S100, Tyrosinase, TRP1, PMEL(17), MAGE1, MAGE4, CTA, BAGE, GAGE/SSX2, Melan).

RESULTS

We identified the following 9 HLA Class I alleles with very high immunogenicity and binding affinity against all 11 melanoma antigens: A02:14, B07:10, B35:10, B40:10, B40:12, B44:10, C07:11, and C07:13, and C*07:14.

CONCLUSION

These 9 HLA alleles possess the potential to aid in the elimination of melanoma both by themselves and by enhancing the beneficial effect of immune checkpoint inhibitors.

摘要

目的

宿主免疫遗传学(人类白细胞抗原,HLA)在人类对黑色素瘤的免疫反应中起关键作用,影响黑色素瘤的患病率和免疫治疗结果。有益的结果取决于黑色素瘤抗原表位与HLA I类分子的成功结合,以有效激活细胞毒性CD8 +淋巴细胞并随后消除癌细胞。本研究评估了HLA I类与黑色素瘤肿瘤抗原的结合亲和力和免疫原性,以确定最适合促进消除黑色素瘤抗原的等位基因。

方法

在本研究中,我们使用免费的软件工具来确定2462个已报道的HLA I类等位基因与黑色素瘤肿瘤中表达的11种已知抗原(TRP2、S100、酪氨酸酶、TRP1、PMEL(17)、MAGE1、MAGE4、CTA、BAGE、GAGE/SSX2、Melan)的所有线性九肽表位的结合亲和力和免疫原性。

结果

我们鉴定出以下9种对所有11种黑色素瘤抗原具有非常高免疫原性和结合亲和力的HLA I类等位基因:A02:14、B07:10、B35:10、B40:10、B40:12、B44:10、C07:11、C07:13和C*07:14。

结论

这9种HLA等位基因有潜力通过自身以及增强免疫检查点抑制剂的有益效果来帮助消除黑色素瘤。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8344/11350539/db41f05e7cfe/10.1177_11769351241274160-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8344/11350539/db41f05e7cfe/10.1177_11769351241274160-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8344/11350539/db41f05e7cfe/10.1177_11769351241274160-fig1.jpg

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