重组抗小鼠 PD-1 (CD279) 单克隆抗体 (克隆号: RMP1-14.1)
Syd Labs 重组抗小鼠 PD-1 单克隆抗体 (克隆号: RMP1-14.1, 货号: PA007162.r2a) 采用哺乳动物细胞重组表达,与经典 RMP1-14 克隆具有完全相同的可变区序列。专为体内(In Vivo)PD-1/PD-L1 通路阻断及免疫检查点研究设计,批次间高度稳定,提供极高性价比。
- 应用范围: 适配体内阻断(In Vivo Blocking)、流式细胞术(FC)、免疫组化(IHC)及体外功能分析。
- 亚型与对照: 大鼠 IgG2a Kappa (rIgG2a),可与重组大鼠IgG2a同型对照抗体(Isotype Control)配套使用。
- 品质保障: 严格控制内毒素水平(≤0.05 EU/mg 或 ≤1 EU/mg),无杂交瘤基因突变及批次间差异,现货供应。
💡 实验参考指南:
• 剂量参考:RMP1-14抗体在不同小鼠肿瘤模型中剂量建议
• 应用指南:抗小鼠PD-1单抗(RMP1-14)如何用于体内PD-1阻断研究
产品参数
| 货号 | PA007162.r2a |
|---|---|
| 产品名称 | 重组抗小鼠 PD-1 (CD279) 单克隆抗体 (克隆号: RMP1-14.1) |
| 英文名 | In Vivo Grade Recombinant Anti-mouse PD-1 Monoclonal Antibody (Clone RMP1-14.1), Rat IgG2a Kappa |
| 供货商名称 | Syd Labs, Inc. |
| 品牌名 | Syd Labs |
| 别称 | CD279 |
| 概述 | 重组抗小鼠PD-1(CD279)单克隆抗体的可变区序列是从大鼠抗小鼠PD-1单抗(克隆号:RMP1-14)中提取的。重组大鼠和嵌合小鼠版本的RMP1-14抗体也可用。 |
| 克隆号 | RMP1-14.1,与大鼠抗小鼠PD1单克隆抗体(克隆号:RMP1-14)的可变区和不变区序列相同。 |
| 同种型 | 大鼠 IgG2a, kappa |
| 应用 | 抗小鼠pd-1抗体用于免疫组织化学(IHC),流式细胞术(FC),以及各种体外和体内功能分析。 |
| 免疫源 | 原大鼠杂交瘤(克隆号:RMP1-14)是用小鼠pd -1转染的BHK细胞免疫大鼠产生的。 |
| 抗体形式 | 0.2 μM过滤溶液,1x PBS |
| 内毒素 | 根据 LAL 方法,≤1 EU每1mg 蛋白质。提供特级体内实验级重组抗小鼠PD 1单克隆抗体,大鼠IgG2a Kappa(RMP1-14.1)(内毒素≤0.05 EU/mg)。 |
| 纯度 | >95%(在还原条件下通过SDS-PAGE测定) |
| 运输 | 体内实验级重组抗小鼠PD-1(CD279)单克隆抗体(克隆号RMP1-14.1),大鼠IgG2a Kappa用冰袋运输。收到后,请立即将其存放在下面建议的温度下。 |
| 稳定性与存储 | 抗小鼠PD-1单抗使用手动除霜冰箱并避免重复冻融循环。 如果保存在2 至 8°C,自收到之日起可保存1个月。 如果保存在-20 至 -70°C,自收到之日起可保存 12个月。 |
文献
重组抗小鼠 PD-1 (CD279) 单抗 (克隆号: RMP1-14.1) 常见问题解答 (FAQ)
问:在小鼠体内实验中,哪种抗小鼠 PD-1 (CD279) 抗体克隆效果最好?
目前科研界在小鼠肿瘤模型及免疫研究中,用于体内 PD-1 信号通路阻断最常用的三个经典抗体克隆号为 RMP1-14、29F.1A12 和 J43,三者均有大量高分文献支持。
其中,RMP1-14 克隆号能特异性阻断 PD-1 与其配体(B7-H1 / PD-L1 和 B7-DC / PD-L2)的结合,有效抑制由巨噬细胞共刺激诱导的 T 细胞增殖及细胞因子释放。
Syd Labs 提供基于 RMP1-14.1 和 29F.1A12 序列的高纯度体内实验级(In Vivo Grade)重组抗体。需要特别注意的是,虽然大鼠与小鼠种属接近,但大鼠来源抗体在小鼠体内仍可能引发免疫原性(产生 ADA 中和抗体)。因此,在 C57BL/6 等常用小鼠品系中,选用具备 Fc 沉默功能(如 LALAPG 突变体) 或 鼠化(Murinized)改造版本 的重组抗体效果更佳,可避免抗体依耐性细胞毒性(ADCC)对实验结果的干扰。
问:Syd Labs 货号 PA007162.r2a、PA007162.m2cLA 与 PA007162.mm2cLA 有什么区别?
这三个货号均基于经典 RMP1-14 序列,但在抗体亚型与鼠化程度上进行了针对性工程改造,适用于不同的实验场景:
- PA007162.r2a (当前产品):重组大鼠 IgG2a Kappa 亚型(克隆号 RMP1-14.1),采用 CHO 或 HEK293 哺乳动物细胞表达。其可变区与恒定区序列与传统 RMP1-14 杂交瘤单抗完全一致,批次稳定性更好。
- PA007162.m2cLA:重组小鼠 IgG2c LALAPG Kappa 亚型。我们将大鼠恒定区替换为小鼠 IgG2c 并引入 LALAPG 突变(Fc 沉默),专为 C57BL/6 等不表达 IgG2a 的小鼠品系设计,极大地降低了免疫原性与 ADCC 效应。
- PA007162.mm2cLA:在 m2cLA 的基础上,对抗体可变区序列进行了进一步的完全鼠化(Murinized)改造,作用类似于人源化抗体药物,在小鼠体内反复给药时几乎无免疫原性。
问:你们是否提供 Fc 沉默型(Fc-silenced)重组 RMP1-14 抗体?
是的,除了标准版 PA007162.r2a 外,多找找平台还提供多种 Syd Labs 表达的 Fc 沉默型 RMP1-14 突变体抗体,包括 mIgG2c LALAPG、mIgG2a LALAPG 以及 mIgG1 D265A。同时我们支持定制重组工程化抗体表达服务。
问:在 C57BL/6 和 BALB/c 小鼠模型中,如何选择抗小鼠 PD-1 抗体的同型对照 (Isotype Control)?
小鼠品系的遗传背景决定了其内源性免疫球蛋白亚型的表达差异:
- C57BL/6、C57BL/10、SJL 及 NOD 小鼠:基因组中表达 IgG2c 亚型,而不表达 IgG2a。在这类小鼠模型中进行体内阻断实验时,建议优先使用小鼠 IgG2c (或 LALAPG 突变体) 亚型抗体及配套的重组 IgG2c 同型对照。
- BALB/c 及 Swiss Webster 小鼠:基因组中表达 IgG2a 亚型,而不表达 IgG2c。在 BALB/c 模型中,大鼠 IgG2a (PA007162.r2a) 或小鼠 IgG2a 均有良好的适配性,需配套 重组大鼠 IgG2a 同型对照抗体 使用。
Syd Labs 抗小鼠PD-1重组抗体(克隆号:RMP1-14.1,货号:PA007162.r2a)引用文献:
Spermidine potentiates anti-tumor immune responses and immunotherapy sensitivity in breast cancer
Xinyu Yang,et al.J Cancer 2025.doi:10.7150/jca.113235
“In vivo spermidine supplementing experiment:To establish a subcutaneous tumor-bearing mouse model …… Docetaxel (Sanofi Mature IP) was administered intraperitoneally at 10 mg/kg one week after tumor inoculation in mice, followed by a single intraperitoneal injection of PD-1 antibody (SYD, PA007162) at a dosage of 10 mg/kg …… The Institutional Animal Care and Use Committee at Sun Yat-Sen University granted approval for animal experiments. ”
PD-L1/PD-1 checkpoint pathway regulates hippocampal neuronal excitability and learning and memory behavior
Junli Zhao,et al.Neuron. 2023.PMCID: PMC10529885
“Programmed death protein 1 (PD-1) and its ligand PD-L1 constitute an immune checkpoint pathway. We report that neuronal PD-1 signaling regulates learning/memory in health and disease. Mice lacking PD-1 (encoded by Pdcd1) exhibit enhanced long-term potentiation (LTP) and memory. Intraventricular administration of anti-mouse PD-1 monoclonal antibody (RMP1-14) potentiated learning and memory. Selective deletion of PD-1 in excitatory neurons (but not microglia) also enhanced LTP and memory. Traumatic brain injury (TBI) impairs learning and memory, which is rescued by Pdcd1 deletion or intraventricular PD-1 blockade. Conversely, re-expression of Pdcd1 in PD-1 deficient hippocampal neurons suppresses memory and LTP. Exogenous PD-L1 suppressed learning/memory in mice and the excitability of mouse and NHP hippocampal neurons through PD-1. Notably, neuronal activation suppressed PD-L1 secretion, and PD-L1/PD-1 signaling is distinctly regulated by learning and TBI. Thus, conditions that reduce PD-L1 levels or PD-1 signaling could promote memory in both physiological and pathological conditions.”
PD-L1 signaling selectively regulates T cell lymphatic transendothelial migration
Wenji Piao,et al.Nat Commun. 2022.PMCID: PMC9023578
“Programmed death-1 (PD-1) and its ligand PD-L1 are checkpoint molecules which regulate immune responses. Little is known about their functions in T cell migration and there are contradictory data about their roles in regulatory T cell (Treg) function. Here we show activated Tregs and CD4 effector T cells (Teffs) use PD-1/PD-L1 and CD80/PD-L1, respectively, to regulate transendothelial migration across lymphatic endothelial cells (LECs). Antibody blockade of Treg PD-1, Teff CD80 (the alternative ligand for PD-L1), or LEC PD-L1 impairs Treg or Teff migration in vitro and in vivo. PD-1/PD-L1 signals through PI3K/Akt and ERK to regulate zipper junctional VE-cadherin, and through NFκB-p65 to up-regulate VCAM-1 expression on LECs. CD80/PD-L1 signaling up-regulates VCAM-1 through ERK and NFκB-p65. PD-1 and CD80 blockade reduces tumor egress of PD-1high fragile Tregs and Teffs into draining lymph nodes, respectively, and promotes tumor regression. These data provide roles for PD-L1 in cell migration and immune regulation.”
Macrophages Impair TLR9 Agonist Antitumor Activity through Interacting with the Anti-PD-1 Antibody Fc Domain
Simone Camelliti,et al.Cancers (Basel) 2021.PMCID: PMC8391891
“Simple Summary: We evaluated the contribution of macrophages to the effect of combinatorial immunotherapeutic treatments based on TLR9 stimulation (with CpG-ODNs) and PD-1 blockade in an ovarian cancer preclinical model. We observed a strong reduction in the antitumor efficacy of a TLR9 agonist upon anti-PD-1 antibody administration. Specifically, we found that TLR9-stimulated macrophages, through interacting with the fragment crystallizable (Fc) domain of the anti-PD-1 antibody, acquire an immunoregulatory phenotype leading to dampening of CpG-ODN antitumor effect. Since the stimulation of macrophage TLRs can be achieved not only by synthetic agonists but also by molecules present in the tumor microenvironment, the data we are presenting may represent another possible mechanism of anti-PD-1 antibody therapy resistance. Indeed, it is possible that when delivered as a monotherapy, anti-PD-1 antibody Fc domain may interact with macrophages in which TLR signaling has already been triggered by endogenous ligands, mirroring the biological effects described in the present study. Abstract: Background. A combination of TLR9 agonists and an anti-PD-1 antibody has been reported to be effective in immunocompetent mice but the role of innate immunity has not yet been completely elucidated. Therefore, we investigated the contribution of the innate immune system to this combinatorial immunotherapeutic regimens using an immunodeficient mouse model in which the effector functions of innate immunity can clearly emerge without any interference from T lymphocytes. Methods. Athymic mice xenografted with IGROV-1 human ovarian cells, reported to be sensitive to TLR9 agonist therapy, were treated with cytosine–guanine (CpG)-oligodeoxynucleotides (ODNs), an anti-PD-1 antibody or their combination. Results. We found that PD-1 blockade dampened CpG-ODN antitumor activity. In vitro studies indicated that the interaction between the anti-PD-1 antibody fragment crystallizable (Fc) domain and macrophage Fc receptors caused these immune cells to acquire an immunoregulatory phenotype, contributing to a decrease in the efficacy of CpG-ODNs. Accordingly, in vivo macrophage depletion abrogated the detrimental effect exerted by the anti-PD-1 antibody. Conclusion. Our data suggest that if TLR signaling is active in macrophages, coadministration of an anti-PD-1 antibody can reprogram these immune cells towards a polarization state able to negatively affect the immune response and eventually promote tumor growth.”
了解更多抗小鼠PD-1单克隆抗体(clone:RMP1-14)参考文献,请查看:抗小鼠PD-1单抗(克隆号RMP1-14)参考文献
Syd Labs抗小鼠PD-1重组抗体(克隆号RMP1-14.1)(货号:PA007162.r2a)推荐同型对照抗体:
Syd Labs提供以下体内实验级重组抗小鼠PD-1单克隆抗体(克隆号RMP1-14.1)突变体:
体内实验级重组抗小鼠PD-1单克隆抗体(克隆号RMP1-14.1),小鼠IgG2c-LALAPG Kappa
体内实验级重组抗小鼠PD-1单克隆抗体(克隆号RMP1-14.1),小鼠IgG2a-LALAPG Kappa
体内实验级重组抗小鼠PD-1单克隆抗体(克隆号RMP1-14.1),小鼠IgG1-D265A Kappa
背景知识 (Background Knowledge)
大鼠抗小鼠 PD-1 单克隆抗体(克隆号:RMP1-14,大鼠 IgG2a kappa)能够特异性反应结合由小鼠 pdcd1 基因编码的小鼠PD-1 蛋白(又称抗小鼠 CD279 抗体或程序性死亡蛋白-1)。PD-1 属于免疫球蛋白超家族(Ig superfamily)中 CD28 家族的成员。PD-1 拥有两个配体,即 PD-L1 和 PD-L2,二者均属于 B7 家族。研究表明,在黑色素瘤小鼠模型中,通过使用抗小鼠 PD-1 抗体和抗小鼠 PD-L1 抗体阻断 PD-L1 蛋白与其受体 PD-1 蛋白之间的相互作用,可以有效减缓并暂时阻止肿瘤的生长。其中,RMP1-14 克隆号抗体能够同时阻断小鼠 PD-L1 蛋白和小鼠 PD-L2 蛋白与小鼠 PD-1 蛋白的结合。
我们的重组抗小鼠 CD279 单克隆抗体(重组 RMP1-14 抗体)包含了杂交瘤克隆 RMP1-14 的大鼠抗小鼠 PD-1 抗体部分(可变区)或完整的氨基酸序列。此外,鼠化抗小鼠 PD-1 重组抗体不仅具备小鼠 IgG 抗体的恒定区,还融合了经过鼠化改造的可变区序列。


