1.中山大学中山医学院药理学教研室和心脑血管研究中心,广东 广州 510080
2.中山大学附属第三医院特诊医疗病区, 广东 广州 510630
胡瑞,硕士生,E-mail:hurui8@mail2.sysu.edu.cn
收稿:2021-10-28,
纸质出版:2022-05-20
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胡瑞,周仪,李梅等.CFTR氯通道调控小鼠内毒素血症血小板活化及炎症因子生成[J].中山大学学报(医学科学版),2022,43(03):344-351.
HU Rui,ZHOU Yi,LI Mei,et al.CFTR Chloride Channel Regulates Platelet Activation and Inflammatory Factors Production in Mouse Endotoxemia[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(03):344-351.
胡瑞,周仪,李梅等.CFTR氯通道调控小鼠内毒素血症血小板活化及炎症因子生成[J].中山大学学报(医学科学版),2022,43(03):344-351. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0302.
HU Rui,ZHOU Yi,LI Mei,et al.CFTR Chloride Channel Regulates Platelet Activation and Inflammatory Factors Production in Mouse Endotoxemia[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(03):344-351. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0302.
目的
2
囊性纤维化跨膜转导调节因子(CFTR)氯通道参与血小板活化的调控。本研究探讨CFTR氯通道对脂多糖(LPS)引起的内毒素血症过程中血小板活化、血小板数目及血小板介导炎症因子生成的影响。
方法
2
应用8~12周龄CFTR全基因敲除(
Cftr
-/-
)小鼠及野生型(
Cftr
+/+
)小鼠,制备股静脉注射LPS诱导内毒素血症模型。分离小鼠外周血的血小板,采用免疫印迹法检测TLR4蛋白的表达,采用实时定量PCR法检测炎症因子
IL-1β
、
IL-6、IL-10、TNF-α
和
CRP
的表达。采用腺病毒介导的CFTR cDNA过表达(Ad-CFTR)和应用CFTR矫正剂VX-661处理人巨核细胞株MEG-01,检测CFTR对LPS引起的上述指标变化的影响。
结果
2
Cftr
+/+
小鼠静脉注射LPS后,外周血血小板TLR4和P-selectin表达增加、血小板数目减少、血小板表达促炎炎症因子mRNA水平升高,而CFTR全基因敲除加重之(
P
<
0.05)。体外MEG-01人巨核细胞应用LPS刺激后,CFTR蛋白表达降低,TLR4蛋白表达升高,LPS上调
IL-1β、CRP、TNF-α
而下调
IL-10
表达(
P
<
0.01);Ad-CFTR或VX661可部分或全部逆转上述效应(
P
<
0.01)。
结论
2
本研究揭示了CFTR氯通道可调控血小板活化及血小板TLR4介导的炎症因子生成。
Objective
2
Cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel is involved in the regulation of platelet activation. This study investigated the effects of CFTR on platelet activation, platelet count and platelet-mediated inflammatory factors production during lipopolysaccharide (LPS) induced endotoxemia.
Methods
2
The mouse model of LPS induced endotoxemia was established using
Cftr
-/-
and wild-type
Cftr
+/+
mice aged 8-12 weeks. The expression of TLR4 (Toll-like receptor 4) protein was detected by western blotting, and the mRNA expression of inflammatory factors including
IL-1β
,
IL-6
,
IL-10
,
TNF-α
and
CRP
was detected by real-time quantitative PCR. The adenovirus-mediated CFTR cDNA overexpression (Ad-CFTR) in human megakaryocyte MEG-01 and CFTR corrector VX-661 were used to detect the effects of CFTR on LPS-induced changes of these indexes.
Results
2
Cftr
+/+
mice injected with LPS displayed increased TLR4 protein expression and inflammatory factor mRNA levels on peripheral circulating platelets, which ware exaggerated by global
Cftr
knockout (
P
<
0.05). MEG-01 cells treated with LPS exhibited decreased CFTR protein expression, increased TLR4 protein expression, up-regulated
IL-1β, CRP, TNF-α
levels and down-regulated
IL-10
level (
P
<
0.01), while Ad-CFTR or VX661 partially or completely reversed the above effects (
P
<
0.01).
Conclusion
2
This study revealed that CFTR chloride channel may regulate platelet activation and platelet TLR4-mediated inflammatory cytokines production during endotoxemia.
Faix JD . Biomarkers of sepsis [J]. Crit Rev Clin Lab Sci , 2013 , 50 ( 1 ): 23 - 36 .
Merx MW , Weber C . Sepsis and the heart [J]. Circulation , 2007 , 116 ( 7 ): 793 - 802 .
Płóciennikowska A , Hromada A , Borzecka K , et al . Co-operation of TLR4 and raft proteins in LPS-induced pro-inflammatory signaling [J]. Cell Mol Life Sci , 2015 , 72 ( 3 ): 557 - 581 .
Rieber N , Hector A , Carevic M , et al . Current concepts of immune dysregulation in cystic fibrosis [J]. Int J Biochem Cell Biol , 2014 , 52 : 108 - 112 .
Bakogiannis C , Sachse M , Stamatelopoulos K , et al . Platelet-derived chemokines in inflammation and atherosclerosis [J]. Cytokine , 2019 , 122 : 154 - 157 .
Hottz ED , Azevedo Q , Isaclaudia G , et al . Platelet activation and platelet-monocyte aggregate formation trigger tissue factor expression in patients with severe COVID-19 [J]. Blood , 2020 , 136 ( 11 ): 1330 - 1341 .
Zhang S , LIU Y , Wang X , et al . SARS-CoV-2 binds platelet ACE2 to enhance thrombosis in COVID-19 [J]. J Hematol Oncol , 2020 . 13 ( 1 ): 120
Massip MM , Santa TA . Extracellular pH and lung infections in cystic fibrosis [J]. Eur J Cell Biol , 2018 , 97 ( 6 ): 402 - 410 .
Cantin AM , Hartl D , Konstan M , et al . Inflammation in cystic fibrosis lung disease: Pathogenesis and therapy [J]. J Cyst Fibros , 2015 , 14 ( 4 ): 419 - 430 .
Rathinam V , Zhao Y , Shao F , et al . Innate immunity to intracellular LPS [J]. Nat Immunol , 2019 , 20 ( 5 ): 527 - 533 .
Paterson SL , Barry PJ , Horsley AR , et al . Tezacaftor and ivacaftor for the treatment of cystic fibrosis [J]. Expert Rev Respir Med , 2020 , 14 ( 1 ): 15 - 30 .
Dickson K , Lehmann C . Inflammatory response to different toxins in experimental sepsis models [J]. Int J Mol Sci , 2019 , 20 ( 18 ): 41 - 43 .
Salomão R , Ferreira BL , Salomão MC , et al . Sepsis: evolving concepts and challenges [J]. Braz J Med Biol Res , 2019 . 52 ( 4 ): e8595 .
Ciesielska AM , Matyjek , Kwiatkowska K , et al . TLR4 and CD14 trafficking and its influence on LPS-induced pro-inflammatory signaling [J]. Cell Mol Life Sci , 2021 , 78 ( 4 ): 1233 - 1261 .
Zarbock A , Polanowska G , Ley K , et al . Platelet-neutrophil-interactions: linking hemostasis and inflammation [J]. Blood Rev , 2007 , 21 ( 2 ): 99 - 111 .
Hotin N , Boulaftali BY , Camerer E , et al . Platelets and vascular integrity: how platelets prevent bleeding in inflammation [J]. Blood , 2018 , 131 ( 3 ): 277 - 288 .
Roy A , Srivastava M , Saqib U , et al . Potential therapeutic targets for inflammation in toll-like receptor 4 (TLR4)-mediated signaling pathways [J]. Int Immunopharmacol , 2016 , 40 : 79 - 89 .
Rossaint J , Margraf A , Zarbock A , et al . Role of platelets in leukocyte recruitment and resolution of inflammation [J]. Front Immunol , 2018 , 9 : 2712 .
Ortiz G , Yu MA , Looney MR , et al . Cystic fibrosis transmembrane conductance regulator dysfunction in platelets drives lung hyperinflammation [J]. J Clin Invest , 2020 , 130 ( 4 ): 2041 - 2053 .
Lucas K , Maes M . Role of the Toll Like Receptor (TLR) Radical cycle in chronic inflammation: possible treatments targeting the TLR4 pathway [J]. Mol Neurobiol , 2013 , 48 ( 1 ): 190 - 204 .
王冠蕾 . 囊性纤维化跨膜转导调节因子(CFTR)氯通道对心血管功能影响的研究进展 [J]. 中山大学学报(医学科学版) , 2017 , 38 ( 2 ): 189 - 195 .
Wang GL . CFTR in cardiovascular functions [J]. J SUN Yat-sen Univ (Med Sci) , 2017 , 38 ( 2 ): 189 - 195 .
李俊 , 杨涵滟 , 韩慧 , 等 . CFTR通过调控二磷酸腺苷受体P2Y 12 影响血小板活化 [J]. 中山大学学报(医学科学版) , 2021 , 42 ( 4 ): 521 - 527 .
Li J , Yang HY , Han H , et al . CFTR regulates platelet activation via the p2y 12 -mediated signaling pathway [J] J SUN Yat-sen Univ (Med Sci) , 2021 , 42 ( 4 ): 521 - 527 .
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