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CD123 thioaptamer protects against sepsis via the blockade between IL-3/CD123 in a cecal ligation and puncture rat model
Nucleosides, Nucleotides & Nucleic Acids ( IF 1.1 ) Pub Date : 2020-09-28 , DOI: 10.1080/15257770.2020.1815770
Jiangang Zhao 1 , Meng Wang 2 , Ying Yang 3 , Guoxia Wang 3 , Fengyu Che 3 , Qiao Li 4 , Liyu Zhang 3
Affiliation  

Abstract Sepsis is one of the most common causes of death in ICU and especially is a harmful and a life-threatened disease to pediatrics in the world. It has been demonstrated that IL-3 plays an essential role in the processing of sepsis and the inhibition of IL-3 may alleviate sepsis progress. In our previous study, we selected a novel CD123 aptamer successfully which could inhibit the interaction of CD123 and IL-3. The aim of this study is to explore the protection ability of the first thioaptamer SS30 against sepsis in a cecal ligation and puncture (CLP) rat model. Serum IL-3 level of sepsis patients was assessed by ELISA. CLP rat model was applied in all experimental groups. CD123 thioaptamer SS30 and CD123 antibody were used to block the recognition between IL-3 and CD123. Body weight, temperature, blood gas, MAP, and serum cytokines of four grouped rats were assessed. Flow cytometry was utilized to evaluate JAK2 and STAT5 proteins. After the administration of SS30 or CD123 antibody, the rats in SS30 and CD123 antibody group had lower cytokines values(lactate, TNF-α, IL-1β, and IL-6), whereas exhibited higher value of core temperature, MAP, PO2/FiO2, and ETCO2 than those in the CLP group. The expression level of phosphorylated JAK2 and STAT5 was declined and the survival rate of rats was increased. In addition, the protection ability of SS30 was better than CD123 antibody. Therefore, CD123 thioaptamer SS30 could reduce mortality by down-regulating the phosphorylated JAK2/STAT5 signaling pathway, and reduce serum cytokines which involving in sepsis development in CLP rat model.

中文翻译:

CD123 硫代适体通过阻断 IL-3/CD123 在盲肠结扎和穿刺大鼠模型中预防败血症

摘要 脓毒症是重症监护病房最常见的死亡原因之一,尤其是全球儿科危害和威胁生命的疾病。已经证明 IL-3 在脓毒症的处理过程中起重要作用,抑制 IL-3 可以减轻脓毒症的进展。在我们之前的研究中,我们成功地选择了一种新型的 CD123 适配体,它可以抑制 CD123 和 IL-3 的相互作用。本研究的目的是探索第一个硫代适体 SS30 在盲肠结扎和穿刺 (CLP) 大鼠模型中对抗败血症的保护能力。通过ELISA评估脓毒症患者的血清IL-3水平。所有实验组均采用CLP大鼠模型。CD123硫代适体SS30和CD123抗体用于阻断IL-3和CD123之间的识别。体重、体温、血气、MAP、并评估了四组大鼠的血清细胞因子。流式细胞术用于评估 JAK2 和 STAT5 蛋白。SS30或CD123抗体给药后,SS30和CD123抗体组大鼠的细胞因子值(乳酸、TNF-α、IL-1β和IL-6)降低,而核心温度、MAP、PO2/ FiO2 和 ETCO2 高于 CLP 组。磷酸化的 JAK2 和 STAT5 的表达水平下降,大鼠的存活率增加。此外,SS30的保护能力优于CD123抗体。因此,CD123硫代适体SS30可以通过下调磷酸化JAK2/STAT5信号通路来降低死亡率,并降低CLP大鼠模型中参与脓毒症发展的血清细胞因子。流式细胞术用于评估 JAK2 和 STAT5 蛋白。SS30或CD123抗体给药后,SS30和CD123抗体组大鼠的细胞因子值(乳酸、TNF-α、IL-1β和IL-6)降低,而核心温度、MAP、PO2/ FiO2 和 ETCO2 高于 CLP 组。磷酸化的 JAK2 和 STAT5 的表达水平下降,大鼠的存活率增加。此外,SS30的保护能力优于CD123抗体。因此,CD123硫代适体SS30可以通过下调磷酸化JAK2/STAT5信号通路来降低死亡率,并降低CLP大鼠模型中参与脓毒症发展的血清细胞因子。流式细胞术用于评估 JAK2 和 STAT5 蛋白。SS30或CD123抗体给药后,SS30和CD123抗体组大鼠的细胞因子值(乳酸、TNF-α、IL-1β和IL-6)降低,而核心温度、MAP、PO2/ FiO2 和 ETCO2 高于 CLP 组。磷酸化的 JAK2 和 STAT5 的表达水平下降,大鼠的存活率增加。此外,SS30的保护能力优于CD123抗体。因此,CD123硫代适体SS30可以通过下调磷酸化JAK2/STAT5信号通路来降低死亡率,并降低CLP大鼠模型中参与脓毒症发展的血清细胞因子。SS30和CD123抗体组大鼠的细胞因子值(乳酸、TNF-α、IL-1β和IL-6)较低,而核心温度、MAP、PO2/FiO2和ETCO2值高于CLP组团体。磷酸化的 JAK2 和 STAT5 的表达水平下降,大鼠的存活率增加。此外,SS30的保护能力优于CD123抗体。因此,CD123硫代适体SS30可以通过下调磷酸化JAK2/STAT5信号通路来降低死亡率,并降低CLP大鼠模型中参与脓毒症发展的血清细胞因子。SS30和CD123抗体组大鼠的细胞因子值(乳酸、TNF-α、IL-1β和IL-6)较低,而核心温度、MAP、PO2/FiO2和ETCO2值高于CLP组团体。磷酸化的 JAK2 和 STAT5 的表达水平下降,大鼠的存活率增加。此外,SS30的保护能力优于CD123抗体。因此,CD123硫代适体SS30可以通过下调磷酸化JAK2/STAT5信号通路来降低死亡率,并降低CLP大鼠模型中参与脓毒症发展的血清细胞因子。此外,SS30的保护能力优于CD123抗体。因此,CD123硫代适体SS30可以通过下调磷酸化JAK2/STAT5信号通路来降低死亡率,并降低CLP大鼠模型中参与脓毒症发展的血清细胞因子。此外,SS30的保护能力优于CD123抗体。因此,CD123硫代适体SS30可以通过下调磷酸化JAK2/STAT5信号通路来降低死亡率,并减少参与CLP大鼠模型脓毒症发展的血清细胞因子。
更新日期:2020-09-28
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