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Ghasem Rahimi Kalateh Shah Mohammad Atefeh Ghahremanloo Arash Soltani Esmat Fathi Seyed Isaac Hashemy 《Journal of cellular physiology》2020,235(7-8):5449-5460
Immunotherapy has caused a paradigm shift in the treatment of several malignancies, particularly the blockade of programmed death-1 (PD-1) and its specific receptor/ligand PD-L1 that have revolutionized the treatment of a variety of malignancies, but significant durable responses only occur in a small percentage of patients, and other patients failed to respond to the treatment. Even those who initially respond can ultimately relapse despite maintenance treatment, there is considerable potential for synergistic combinations of immunotherapy and chemotherapy agents with immune checkpoint inhibitors into conventional cancer treatments. The clinical experience in the use of cytokines in the clinical setting indicated the efficiency of cytokine therapy in cancer immunotherapy. Combinational approaches to enhancing PD-L1/PD-1 pathways blockade efficacy with several cytokines such as interleukin (IL)-2, IL-15, IL-21, IL-12, IL-10, and interferon-α (IFN-α) may result in additional benefits. In this review, the current state of knowledge about PD-1/PD-L1 inhibitors, the date in the literature to ascertain the combination of anti-PD-1/PD-L1 antibodies with cytokines is discussed. Finally, it is noteworthy that novel therapeutic approaches based on the efficient combination of recombinant cytokines with the PD-L1/PD-1 blockade therapy can enhance antitumor immune responses against various malignancies. 相似文献
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美国免疫学家詹姆斯·艾利森(James P．Allison)与日本免疫学家本庶佑(Tasuku Honjo)因在免疫检查点治疗方面的贡献而获得了2018年诺贝尔生理学或医学奖．这一发现为免疫治疗开启了一扇新的大门．本文回顾了免疫检查点CTLA-4和PD-1的研究历史,免疫检查点药物的研发和应用进展以及免疫检查点疗法在国内的发展现况,提出了免疫检查疗法目前存在的局限性和解决方法．随着近年来我国在免疫治疗领域巨大的资金投入、一流基础研究平台的建设和优秀人才的回国使得我国在这一领域硕果累累,相信在不久的将来我国的免疫检查点抑制剂将会走出国门,为全人类的癌症事业做出贡献． 相似文献
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Shuguang Tan Danqing Chen Kefang Liu Mengnan He Hao Song Yi Shi Jun Liu Catherine W.-H. Zhang Jianxun Qi Jinghua Yan Shan Gao George F. Gao 《蛋白质与细胞》2016,7(12):866-877
Antibody-based PD-1/PD-L1 blockade therapies have taken center stage in immunotherapies for cancer, with multiple clinical successes. PD-1 signaling plays pivotal roles in tumor-driven T-cell dysfunction. In contrast to prior approaches to generate or boost tumor-specific T-cell responses, antibody-based PD-1/PD-L1 blockade targets tumor-induced T-cell defects and restores preexisting T-cell function to modulate antitumor immunity. In this review, the fundamental knowledge on the expression regulations and inhibitory functions of PD-1 and the present understanding of antibody-based PD-1/ PD-L1 blockade therapies are briefly summarized. We then focus on the recent breakthrough work concerning the structural basis of the PD-1/PD-Ls interaction and how therapeutic antibodies, pembrolizumab targeting PD-1 and avelumab targeting PD-L1, compete with the binding of PD-1/PD-L1 to interrupt the PD-1/PD-L1 interaction. We believe that this structural information will benefit the design and improvement of therapeutic antibodies targeting PD-1 signaling. 相似文献
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Tumor immunotherapy, such as PD-1/PD-L1 blockade, has shown promising clinical efficacy in patients with various types of tumors. However, the response to PD-1/PD-L1 blockade in a majority of malignancies is limited, indicating an urgent need for a deeper understanding of the mechanisms of PD-1/PD-L1 axis-mediated tumor tolerance. As the most abundant immune cells in the tumor stroma, macrophages display multiple phenotypes and functions in response to the stimuli of the tumor microenvironment. PD-1/PD-L1 has been demonstrated to be highly expressed in tumor-associated macrophages (TAMs), and TAM polarization has been shown to be important during tumor progression. In this review, we outline the relationship between TAM PD-1/PD-L1 expression and polarizations, summarize the involvement of M2 TAMs in PD-1/PD-L1-mediated T-cell exhaustion, and discuss improved approaches for overcoming PD-1/PD-L1 blockade resistance by inducing M2/M1 switching of TAMs. 相似文献
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Hongwei Lv Guishuai Lv Cian Chen Qianni Zong Guoqing Jiang Dan Ye Xiuliang Cui Yufei He Wei Xiang Qin Han Liang Tang Wen Yang Hongyang Wang 《Cell metabolism》2021,33(1):110-127.e5
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Hongmei Zheng Yue Ning Yuting Zhan Sile Liu Qiuyuan Wen Songqing Fan 《International journal of biological sciences》2021,17(10):2537
PD-1 (Programmed cell death protein-1) is mainly expressed in various immune cells, while its ligands PD-L1/PD-L2 (Programmed death ligand-1/Programmed death ligand-2) are mostly expressed in tumor cells. Generally, the binding of PD-L1/PD-L2 and PD-1 could lead to the tumor immune evasion. However, some recent studies showed that PD-1 could also be expressed in tumor cells and could activate mTOR (Mammalian Target of Rapamycin) or Hippo signaling pathway, therefore facilitating tumor proliferation independent of the immune system. While there was evidence that tumor cell-intrinsic PD-1 inhibited the activation of AKT and ERK1/2 pathways, thereby inhibiting tumor cell growth. Based on TCGA and CCLE database, we found that PD-1 was expressed in a variety of tumors and was associated with patient''s prognosis. Besides, we found that PD-1 may be involved in many carcinogenic signaling pathway on the basis of PD-1 gene enrichment analysis of cancer tissues and cancer cells. Our understanding of the tumor cell-intrinsic PD-1 function is still limited. This review is aimed at elaborating the potential effects of tumor cell-intrinsic PD-1 on carcinogenesis, providing a novel insight into the effects of anti-PD-1/PD-L1 immunotherapy, and helping to open a major epoch of combination therapy. 相似文献
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Luka de Vos-Hillebrand;Simon Fietz;Philip Hillebrand;Zsófi Kulcsár;Marie Yatou Diop;Sarah Hollick;Alexander Philippe Maas;Sebastian Strieth;Jennifer Landsberg;Dimo Dietrich; 《Pigment cell & melanoma research》2024,37(2):309-315
The immune-modulating protein CD52 attenuates lymphocyte function and is associated with autoimmune disorders, for example, multiple sclerosis (MS). CD52 represents a therapeutic target in MS and chronic lymphocytic leukemia (CLL). Its expression has prognostic and predictive value in CLL and is prognostic in breast cancer. Its significance in melanoma is unclear. We analyzed CD52 mRNA expression data from tumor bulk tissues of N = 445 untreated melanoma patients from The Cancer Genome Atlas (TCGA) Research Network and of N = 121 melanoma patients undergoing anti-PD-1 immune checkpoint blockade (ICB) with regard to outcome (overall survival [OS], disease control [DC], and progression-free survival [PFS]), single-cell RNA-Seq data of N = 4645 cells from N = 19 melanoma tissues, and N = 15,457 cells from normal skin provided by N = 5 donors. Higher CD52 mRNA expression was associated with favorable OS (hazard ratio (HR) = 0.820, [95% CI 0.734–0.916], p < .001) in non-ICB-treated melanoma and with PFS (HR = 0.875, [95% CI 0.775–0.989], p = .033) and DC (p = .005) in ICB-treated melanoma. CD52 expression correlated significantly with distinct immune cell subsets and correlated negatively with immune checkpoint expression in T cells. Moreover, our results suggest CD52 expression by a certain type of tissue-resident macrophages. CD52 mRNA was expressed in a small subgroup (8%) of immune checkpoint coexpressing melanoma cells. CD52 expression is associated with features of ICB response in melanoma. Concomitant ICB and anti-CD52 treatment requires critical review. 相似文献
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程序性死亡受体1(PD-1)是一种抑制性免疫检查点,与程序性死亡受体配体1(PD-L1)结合,调节免疫反应,维持机体免疫系统平衡。肿瘤细胞通过过表达PD-L1与免疫细胞表面的PD-1结合,抑制免疫细胞的活性与功能,导致癌细胞免疫逃逸和肿瘤进展。胃肠道癌症是全球临床上常见且高死亡率的恶性肿瘤,目前系统治疗方案的效果有限。近年来,免疫检查点抑制剂（immune checkpoint inhibitors,ICIs）,如PD-1/PD-L1抑制剂在癌症治疗中越来越重要。免疫疗法已被纳入一些胃肠道恶性肿瘤的治疗方案中,与传统治疗方法不同,它是利用各种手段刺激和增强机体免疫功能,最终达到控制肿瘤细胞的治疗策略。然而,尽管PD-1/PD-L1抑制剂在胃肠道肿瘤治疗中显示出潜力,但单一抑制剂治疗效果有限,这可能是由于肿瘤在抑制剂治疗后仍能通过其他途径逃逸免疫攻击,或者存在其他免疫抑制因子的调节。因此,为了进一步提高治疗效果,组合疗法日益受到重视,它可以同时作用于不同的免疫途径,提高免疫治疗的综合效果。然而,为了实现有效的组合疗法,需要深入研究PD-1/PD-L1轴在胃肠道肿瘤发生和发展中的具体作用机制,这有助于制定最佳的治疗策略,并为合适的患者群体提供个体化的治疗方案。本文将介绍PD-1/PD-L1轴在肿瘤发生中的作用及其机制研究进展,并综述PD-1和PD-L1抑制剂在胃肠道肿瘤中的单一和联合治疗策略。 相似文献
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PD-L1 and tumor mutation burden (TMB) are the most widely used immunotherapy biomarkers to identify populations who would attain clinical benefit, with the higher values predicting better therapeutic efficacy. This review addresses the predictive values and unresolved challenges of these two biomarkers. PD-1 and PD-L1 inhibitors have induced durable and effective responses in patients with advanced non-small cell lung cancer, confirmed by multiple clinical trials and real-world studies. Different clinical trials, involving both PD-1/PD-L1 inhibitors alone and combination regimens, adopted either PD-L1 or TMB to stratify the patients, although the predictive capabilities of these two biomarkers are different. In the first-line setting, PD-L1 of 50% or more as a cut-off value can help select candidates for pembrolizumab or atezolizumab monotherapy; however, these two biomarkers poorly predict the efficacy of immunotherapy combination regimens as first-line treatments. In the second-line setting, although patients can benefit from nivolumab regardless of PD-L1 expression, both PD-L1 and blood TMB can be used as biomarkers to find patients suitable for atezolizumab. Except for inaccurate predictiveness, there are many unresolved problems with regard to the two biomarkers, such as the lack of standard detection methods, and their susceptibilities to other dynamic changes. The predictive values of TMB and PD-L1 were low in most circumstances; however, PD-L1 expression greater than ≥ 50% can help select appropriate patients for pembrolizumab and atezolizumab, respectively, as first-line monotherapies. Higher PD-L1 or TMB was associated with greater efficacy for atezolizumab as a second-line monotherapy. 相似文献
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PD-1和PD-L属于B7家族的共刺激分子,介导免疫反应的负性调节信号。Treg细胞是一个具有免疫调节作用的T细胞亚群,在机体的免疫耐受和免疫稳定中具有重要作用。本文就PD-1/PD-L1与Treg细胞的免疫调节作用及相关性研究进展作简要综述。 相似文献
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近年来抗体药物在生物医药领域发展迅速。随着抗体疗法种类的不断增加和PD-1/PD-L1靶点蛋白结构的确证,临床上,越来越多针对PD-1/PD-L1免疫检查点的单克隆抗体药物被不断开发并应用于治疗死亡率高、治愈率低的多种癌症中。但是抗体药物制剂开发水平还需进一步提高,一方面同一靶点的抗体产品同质化严重,另一方面抗体药物的理化性质比小分子药物复杂,因此需要针对不同单克隆抗体的药物特性,筛选出适应于临床应用的稳定蛋白制剂处方。概括了不同抗体药物制剂处方成分(缓冲液成分、药物辅料)的作用,结合PD-1/PD-L1靶点介绍了抗体药物制剂稳定性开发的一般策略以及CDE相关的审评要点。 相似文献
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近年来抗体药物在生物医药领域发展迅速。随着抗体疗法种类的不断增加和PD-1/PD-L1靶点蛋白结构的确证,临床上,越来越多针对PD-1/PD-L1免疫检查点的单克隆抗体药物被不断开发并应用于治疗死亡率高、治愈率低的多种癌症中。但是抗体药物制剂开发水平还需进一步提高,一方面同一靶点的抗体产品同质化严重,另一方面抗体药物的理化性质比小分子药物复杂,因此需要针对不同单克隆抗体的药物特性,筛选出适应于临床应用的稳定蛋白制剂处方。概括了不同抗体药物制剂处方成分(缓冲液成分、药物辅料)的作用,结合PD-1/PD-L1靶点介绍了抗体药物制剂稳定性开发的一般策略以及CDE相关的审评要点。 相似文献
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Yaqiong Zhang Liming Zhang Youwen Xu Xiaoyu Wu Yong Zhou Jinggang Mo 《Journal of cellular physiology》2020,235(12):9304-9316
Long noncoding RNAs (lncRNAs) show multiple functions, including immune response. Recently, the immune-related lncRNAs have been reported in some cancers. We first investigated the immune-related lncRNA signature as a potential target in hepatocellular carcinoma (HCC) survival. The training set (n = 368) and the independent external validation cohort (n = 115) were used. Immune genes and lncRNAs coexpression were constructed to identify immune-related lncRNAs. Cox regression analyses were perfumed to establish the immune-related lncRNA signature. Regulatory roles of this signature on cancer pathways and the immunologic features were investigated. The correlation between immune checkpoint inhibitors and this signature was examined. In this study, the immune-related lncRNA signature was identified in HCC, which could stratify patients into high- and low-risk groups. This immune-related lncRNA signature was correlated with disease progression and worse survival and was an independent prognostic biomarker. Our immune-related lncRNA signature was still a powerful tool in predicting survival in each stratum of age, gender, and tumor stage. This signature mediated cell cycle, glycolysis, DNA repair, mammalian target of rapamycin signaling, and immunologic characteristics (i.e., natural killer cells vs. Th1 cells down, etc). This signature was associated with immune cell infiltration (i.e., macrophages M0, Tregs, CD4 memory T cells, and macrophages M1, etc.,) and immune checkpoint blockade (ICB) immunotherapy-related molecules (i.e., PD-L1, PD-L2, and IDO1). Our findings suggested that the immune-related lncRNA signature had an important value for survival prediction and may have the potential to measure the response to ICB immunotherapy. This signature may guide the selection of the immunotherapy for HCC. 相似文献
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Alireza Mardomi Nabiallah Mohammadi Hamid Tayebi Khosroshahi Saeid Abediankenari 《Journal of cellular physiology》2020,235(5):4183-4197
The promising outcomes of immune-checkpoint based immunotherapies in cancer have provided a proportional perspective ahead of exploiting similar approaches in allotransplantation. Belatacept (CTLA-4-Ig) is an example of costimulation blockers successfully exploited in renal transplantation. Due to the wide range of regulatory molecules characterized in the past decades, some of these molecules might be candidates as immunomodulators in the case of tolerance induction in transplantation. Although there are numerous attempts on the apprehension of the effects of co-signaling molecules on immune response, the necessity for a better understanding is evident. By increasing the knowledge on the biology of co-signaling pathways, some pitfalls are recognized and improved approaches are proposed. The blockage of CD80/CD28 axis is an instance of evolution toward more efficacy. It is now evident that anti-CD28 antibodies are more effective than CD80 blockers in animal models of transplantation. Other co-signaling axes such as PD-1/PD-L1, CD40/CD154, 2B4/CD48, and others discussed in the present review are examples of critical immunomodulatory molecules in allogeneic transplantation. We review here the outcomes of recent experiences with co-signaling molecules in preclinical studies of solid organ transplantation. 相似文献
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《Developmental cell》2022,57(3):329-343.e7
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