
β2-Microglobulin/B2M:小蛋白,大侦探 - 知乎 - 知乎专栏
厦门大学医学院王鑫教授课题组在Cell杂志上发表的研究论文指出,B2M可以作为内源性NMDAR拮抗剂,损害突触功能,从而引发认知损伤。 这一发现揭示了外周血B2M通过血脑屏障进入大脑导致认知障碍的新机制。 研究团队发现,在唐氏综合征患者血液中,B2M表达升高,并且能够穿过血脑屏障,作用于神经细胞的 NMDA受体,引发认知损伤。 通过基因敲除或抗体注射的方式减少唐氏综合征小鼠模型体内B2M含量,可以显著改善小鼠的学习和记忆能力。 此外,B2M还作为一 …
Beta-2 microglobulin - Wikipedia
β2 microglobulin (B2M) is a component of MHC class I molecules. MHC class I molecules have α 1, α 2, and α 3 proteins which are present on all nucleated cells (excluding red blood cells). [5][6] In humans, the β 2 microglobulin protein [7] is encoded by the B2M gene. [6][8] β 2 microglobulin lies beside the α 3 chain on the cell surface.
肿瘤免疫治疗耐药系列之一:关于免疫识别缺陷那些事儿(上)
2018年3月22日 · 人类白细胞抗原 (human leucocyte antigen,HLA) 是人类组织相容性复合体(MHC)的表达产物,肿瘤细胞表面上也存在 HLA,参与抗原的处理和呈递。 HLA 对 CD8+ T Cell 识别肿瘤细胞必不可少。
B2M Gene - GeneCards | B2MG Protein | B2MG Antibody
2024年12月24日 · This gene encodes a serum protein found in association with the major histocompatibility complex (MHC) class I heavy chain on the surface of nearly all nucleated cells. The protein has a predominantly beta-pleated sheet structure that can form amyloid fibrils in some pathological conditions.
Beta-2-microglobulin(β2微球蛋白)简介 - 知乎 - 知乎专栏
2024年1月30日 · β2微球蛋白使MHC类I分子能够有效地呈现肽段给CD8+ T细胞,这一过程对于识别和清除体内的病毒感染细胞和肿瘤细胞至关重要。 通过这种方式,β2微球蛋白直接参与了体内的免疫监视和防御机制,帮助免疫系统维持正常的免疫反应。 在临床上,β2微球蛋白的水平变化与多种疾病状态有关,尤其是在 多发性骨髓瘤 或 慢性肾脏疾病 的患者中。 β2微球蛋白的测量可以作为肾脏功能的一个指标,因为它通过肾脏清除,并且其在血液中的浓度会反映肾脏的过滤能力 …
Overcoming immunoevasion in MHC class I-deficient cancers
2024年12月17日 · To study the immunobiology of MHC-I-deficient tumors, the authors used cancer cell lines with deletion of β 2 -microglobulin (encoded by B2m), a component shared by all MHC-I molecules; such...
Characterization of MHC Class I and β-2-Microglobulin ... - PubMed
MHC I and B2M expression vary among pediatric tumor types and should be evaluated as potential biomarkers, which might identify patients most likely to benefit from MHC I dependent immunotherapies. Modulation of MHC I expression may be a promising mechanism for enhancing MHC I dependent immunotherap …
Beta2-microglobulin (B2M) in cancer immunotherapies: …
2021年10月1日 · Increasing evidence has indicated that B2M gene alterations in tumor cells may lower the efficacy of T-cell based immunotherapies by hampering MHC class I-mediated tumor antigen presentation and avoiding T cell recognition. In this review, we first introduce the biological functions of B2M in cancer and non-cancer.
The immune-related role of beta-2-microglobulin in melanoma
Beta-2-microglobulin (β2M), an important subunit of major histocompatibility complex (MHC) class I, has important biological functions and roles in tumor immunity. In recent years, increasing studies have shown that B2M gene deficiency can inhibit MHC class I antigen presentation and lead to cancer immune evasion by affecting β2M expression.
b2m蛋白(β2微球蛋白)调控细胞因子作用机制 - 华美生物
2023年8月9日 · b2m(β2微球蛋白)是一种小的蛋白质,在人体中广泛存在,并且在免疫系统中发挥着重要的作用。 B2M主要通过调控细胞因子的作用来影响 Your Good Partner in Biology Research