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1.陆军军医大学大坪医院:,麻醉科,创伤与化学中毒全国重点实验室,重庆
2.陆军军医大学大坪医院:,野战外科研究部战伤休克与输血研究室,创伤与化学中毒全国重点实验室,重庆
3.重庆理工大学药学与生物工程学院,重庆
4.西南医科大学基础医学院,四川泸州
5.南京医科大学第一临床医学院,江苏南京
毛庆祥,E-mail:qxmao@tmmu.edu.cn
收稿:2025-07-17,
修回:2025-11-22,
录用:2025-11-24,
纸质出版:2025-12-15
移动端阅览
杜钟媛,刘奕言,包代琴,等.线粒体预处理周细胞对脓毒症大鼠肺血管渗漏的保护作用[J].陆军军医大学学报,2025,47(23):2881-2892.DOI:10.16016/j.2097-0927.202507052.
DU Z Y,LIU Y Y,BAO D Q,et al.Mitochondrial preconditioning of pericytes attenuates pulmonary vascular leakage in sepsis-induced rats[J].J Army Med Univ,2025,47(23):2881-2892.DOI:10.16016/j.2097-0927.202507052.
杜钟媛,刘奕言,包代琴,等.线粒体预处理周细胞对脓毒症大鼠肺血管渗漏的保护作用[J].陆军军医大学学报,2025,47(23):2881-2892.DOI:10.16016/j.2097-0927.202507052. DOI:
DU Z Y,LIU Y Y,BAO D Q,et al.Mitochondrial preconditioning of pericytes attenuates pulmonary vascular leakage in sepsis-induced rats[J].J Army Med Univ,2025,47(23):2881-2892.DOI:10.16016/j.2097-0927.202507052. DOI:
目的
2
探究线粒体预处理周细胞(pericytes,PC)对脓毒症大鼠肺血管渗漏的保护作用。
方法
2
①采用盲肠结扎穿孔术(cecal ligation and puncture,CLP)构建大鼠脓毒症模型。将128只SPF级健康SD大鼠[雌雄各半,体质量(200±20)g]按随机数表法分为:假手术(Sham)组、脓毒症(Sep)组、周细胞治疗(PC)组、线粒体预处理周细胞治疗(Mito-PC)组;Sham组在假手术后立即经尾静脉注射0.5 mL生理盐水,Sep组在CLP术后立即经尾静脉注射0.5 mL生理盐水;PC组和Mito-PC组在CLP术后立即经尾静脉分别注射未处理的周细胞和按2×10
-4
μg/个线粒体预处理12 h后的周细胞(10
6
个/只)。采用流式细胞术观察各组大鼠肺脏周细胞定植率;利用伊文思蓝染色检测各组大鼠肺血管屏障功能;采用HE染色检测各组大鼠肺病理结构;取大鼠血清检测重要脏器功能,如心肌损伤标志物心肌肌钙蛋白T(cardiac troponin T,cTnT)和肾功能损伤标志物[尿素(carbamide,Urea),肌酐(creatinine,Crea)];同时检测血清炎症因子肿瘤坏死因子-ɑ(tumor necrosis factor-ɑ,TNF-ɑ)和白介素-6(interleukin-6,IL-6)。②提取间充质干细胞(mesenchymal stem cells,MSC)来源线粒体,并通过电镜及流式细胞术进行线粒体形态及功能检测;提取初断乳SD大鼠视网膜原代周细胞并通过共聚焦显微镜进行纯度鉴定。线粒体预处理采用与周细胞共孵育的方式进行。细胞实验分为:正常对照(PC)组、线粒体预处理(Mito-PC)组、过氧化氢处理(PC+H
2
O
2
)组和线粒体预处理后联合过氧化氢处理(Mito-PC+H
2
O
2
)组, PC+H
2
O
2
组在更换无血清培养基12 h后加入0.5 μmol/L H
2
O
2
处理4 h,Mito-PC+H
2
O
2
组按2×10
-4
μg/个线粒体预处理周细胞12 h后联合0.5 μmol/L H
2
O
2
处理4 h。观察线粒体预处理对周细胞抗氧化能力的影响。
结果
2
①与Sham组大鼠相比,Sep组大鼠肺血管通透性显著增高,伊文思蓝大量外渗(
P
<
0.05);肺病理结构严重破坏并伴随大量炎性细胞浸润;血清中炎症因子TNF-ɑ、IL-6显著升高(
P
<
0.05)、心肌损伤标志物cTnT和肾功能损伤标志物Urea、Crea显著升高(
P
<
0.05),且无大鼠存活超过72 h(
P
<
0.05);PC组大鼠肺血管屏障功能、肺病理结构以及器官功能仅部分改善(
P
<
0.05);与未处理周细胞相比,线粒体预处理周细胞对肺血管内皮屏障的保护作用显著增强(
P
<
0.05),肺病理结构及重要脏器功能显著改善(
P
<
0.05),炎症反应显著降低,大鼠72 h存活率显著升高(
P
<
0.05)。②线粒体预处理后周细胞磷酸戊糖途径显著增强,NADPH介导的抗氧化能力显著提高,与PC+H
2
O
2
组相比,Mito-PC+H
2
O
2
组周细胞细胞活性显著改善(
P
<
0.05),与PC组相比,Mito-PC组周细胞G6PD活性升高及NADP
+
/NADPH比值水平下降(
P
<
0.05)。
结论
2
周细胞在肺组织中的定植能够减轻脓毒症大鼠的肺血管渗漏,而线粒体预处理后周细胞中磷酸戊糖途径及细胞抗氧化能力增强可能是其疗效更佳的生化机制。
Objective
2
To investigate the protective effects of mitochondrial preconditioning in pericytes (PC) against pulmonary vascular leakage in septic rats.
Methods
2
① 128 specific-pathogen-free SD rats (equal gender
200±20 g) were randomized into: Sham group (postoperative tail vein injection of 0.5 mL saline)
Sepsis (Sep) group (CLP+saline)
PC group (CLP+untreated PC: 10⁶ cells/rat)
and Mito-PC group (CLP+PC preconditioned with 2 μg mitochondria/10⁴ cells for 12 h). Assessments included: PC lung colonization (flow cytometry)
pulmonary barrier function (Evans blue assay)
lung histopathology (HE staining)
serum organ injury markers [cTnT (cardiac)
urea/creatinine (renal)
]
and inflammatory cytokines (TNF-α
IL-6). ② MSC-derived mitochondria were validated by electron microscopy/flow cytometry; primary retinal PCs from w
eaned SD rats were purity-verified (confocal microscopy). In vitro groups: Control (PC)
Mito-PC
PC+H₂O₂ (0.5 μmol/L
4 h)
and Mito-PC+H₂O₂. Antioxidant capacity was assessed
via
pentose phosphate pathway (PPP) activity
NADPH levels
G6PD activity
and NADP⁺/NADPH ratio.
Results
2
① Compared with Sham
Sep group showed significant increase in pulmonary leakage (Evans blue
P
<
0.05)
severe lung injury
elevated serum markers (TNF-α
IL-6
cTnT
urea
creatinine all
P
<
0.05)
0% 72 h survival. PC group showed partial improvement (
P
<
0.05). Mito-PC group demonstrated significant reduction in vascular leakage (
P
<
0.05
vs
PC group)
improved histopathology and organ function (
P
<
0.05)
attenuated inflammation (
P
<
0.05)
higher 72 h survival rate (
P
<
0.05).② Mitochondrial preconditioning significantly enhanced PPP activation and NADPH-mediated antioxidative capacity
Mito-PC+H₂O₂
vs
PC+H₂O₂ showed improved cell viability (
P
<
0.05)
Mito-PC
vs
PC showed increased G6PD activity (
P
<
0.05)
decreased NADP⁺/NADPH ratio (
P
<
0.05).
Conclusion
2
Mitochondrial preconditioning potentiates pericyte-mediated protection against sepsis-induced pulmonary vascular leakage through enhanced pentose phosphate pathway activity. Mitochondrial preconditioning potentiates pericyte-mediated protection against sepsis-induced pulmonary vascular leakage through enhanced pentose phosphate pathway activity.
YE M Z , ZHAO Y , WANG Y Y , et al . NAD(H)-loaded nanoparticles for efficient sepsis therapy via modulating immune and vascular homeostasis [J]. Nat Nanotechnol , 2022 , 17 ( 8 ): 880 - 890 . DOI: 10.1038/s41565-022-01137-w http://dx.doi.org/10.1038/s41565-022-01137-w .
SHANKAR-HARI M , CALANDRA T , SOARES M P , et al . Reframing sepsis immunobiology for translation: towards informative subtyping and targeted immunomodulatory therapies [J]. Lancet Respir Med , 2024 , 12 ( 4 ): 323 - 336 . DOI: 10.1016/S2213-2600(23)00468-X http://dx.doi.org/10.1016/S2213-2600(23)00468-X .
VAN DER POLL T , SHANKAR-HARI M , WIERSINGA W J . The immunology of sepsis [J]. Immunity , 2021 , 54 ( 11 ): 2450 - 2464 . DOI: 10.1016/j.immuni.2021.10.012 http://dx.doi.org/10.1016/j.immuni.2021.10.012 .
LOPES-PIRES M E , FRADE-GUANAES J O , QUINLAN G J . Clotting dysfunction in sepsis: a role for ROS and potential for therapeutic intervention [J]. Antioxidants , 2022 , 11 ( 1 ): 88 . DOI: 10.3390/antiox11010088 http://dx.doi.org/10.3390/antiox11010088 .
LI J X , TAN M M , YANG T , et al . The paracrine isthmin1 transcriptionally regulated by C/EBPβ exacerbates pulmonary vascular leakage in murine sepsis [J]. Am J Physiol Cell Physiol , 2024 , 326 ( 1 ): C304 - C316 . DOI: 10.1152/ajpcell.00431.2023 http://dx.doi.org/10.1152/ajpcell.00431.2023 .
MCMULLAN R R , MCAULEY D F , O’KANE C M , et al . Vascular leak in sepsis: physiological basis and potential therapeutic advances [J]. Crit Care , 2024 , 28 ( 1 ): 97 . DOI: 10.1186/s13054-024-04875-6 http://dx.doi.org/10.1186/s13054-024-04875-6 .
ARMULIK A , GENOVÉ G , BETSHOLTZ C . Pericytes: developmental, physiological, and pathological perspectives, problems, and promises [J]. Dev Cell , 2011 , 21 ( 2 ): 193 - 215 . DOI: 10.1016/j.devcel.2011.07.001 http://dx.doi.org/10.1016/j.devcel.2011.07.001 .
ZHANG Z S , ZHOU H N , HE S S , et al . Research advances in pericyte function and their roles in diseases [J]. Chin J Traumatol , 2020 , 23 ( 2 ): 89 - 95 . DOI: 10.1016/j.cjtee.2020.02.006 http://dx.doi.org/10.1016/j.cjtee.2020.02.006 .
LIU Y Y , BAO D Q , SHE H , et al . Role of Hippo/ACSL4 axis in ferroptosis-induced pericyte loss and vascular dysfunction in sepsis [J]. Redox Biol , 2024 , 78 : 103353 . DOI: 10.1016/j.redox.2024.103353 http://dx.doi.org/10.1016/j.redox.2024.103353 .
罗茜 , 张紫森 , 杨傲 , 等 . 右美托咪定预处理周细胞增强细胞治疗对脓毒症小鼠急性肺损伤的保护作用 [J]. 陆军军医大学学报 , 2025 , 47 ( 2 ): 101 - 111 . DOI: 10.16016/j.2097-0927.202407011 http://dx.doi.org/10.16016/j.2097-0927.202407011 .
LUO X , ZHANG Z S , YANG A , et al . Dexmedetomidine pretreatment enhances protective effect efficacy of pericytes agaist acute lung injury in septic mice [J]. J Army Med Univ , 2025 , 47 ( 2 ): 101 - 111 . DOI: 10.16016/j.2097-0927.202407011 http://dx.doi.org/10.16016/j.2097-0927.202407011 .
LIAO N S , SHI Y J , WANG Y C , et al . Antioxidant preconditioning improves therapeutic outcomes of adipose tissue-derived mesenchymal stem cells through enhancing intrahepatic engraftment efficiency in a mouse liver fibrosis model [J]. Stem Cell Res Ther , 2020 , 11 ( 1 ): 237 . DOI: 10.1186/s13287-020-01763-y http://dx.doi.org/10.1186/s13287-020-01763-y .
YANG Y M , LEE E H , YANG Z . Hypoxia-conditioned mesenchymal stem cells in tissue regeneration application [J]. Tissue Eng Part B Rev , 2022 , 28 ( 5 ): 966 - 977 . DOI: 10.1089/ten.teb.2021.0145 http://dx.doi.org/10.1089/ten.teb.2021.0145 .
ZHANG T G , MIAO C Y . Mitochondrial transplantation as a promising therapy for mitochondrial diseases [J]. Acta Pharm Sin B , 2023 , 13 ( 3 ): 1028 - 1035 . DOI: 10.1016/j.apsb.2022.10.008 http://dx.doi.org/10.1016/j.apsb.2022.10.008 .
LIN R Z , IM G B , LUO A C , et al . Mitochondrial transfer mediates endothelial cell engraftment through mitophagy [J]. Nature , 2024 , 629 ( 8012 ): 660 - 668 . DOI: 10.1038/s41586-024-07340-0 http://dx.doi.org/10.1038/s41586-024-07340-0 .
刘奕言 . 周细胞铁死亡在脓毒症肺血管渗漏中的作用及机制 [D]. 重庆 : 中国人民解放军陆军军医大学 , 2023 . DOI: 10.27001/d.cnki.gtjyu.2023.000296 http://dx.doi.org/10.27001/d.cnki.gtjyu.2023.000296 .
LIU Y Y . The role and mechanism of pericyte ferroptosis in pulmonary vascular permeability following sepsis [D]. Chongqing : Army Medical University , 2023 . DOI: 10.27001/d.cnki.gtjyu.2023.000296 http://dx.doi.org/10.27001/d.cnki.gtjyu.2023.000296 .
SEUL K , YOO S , JI J , et al . Allogenic mitochondria transfer improves cardiac function in iPS-cell-differentiated cardiomyocytes of a patient with Barth syndrome [J]. Exp Mol Med , 2025 , 57 ( 6 ): 1260 - 1271 . DOI: 10.1038/s12276-025-01472-7 http://dx.doi.org/10.1038/s12276-025-01472-7 .
YANG K , FAN M , WANG X H , et al . Lactate induces vascular permeability via disruption of VE-cadherin in endothelial cells during sepsis [J]. Sci Adv , 2022 , 8 ( 17 ): eabm8965 . DOI: 10.1126/sciadv.abm8965 http://dx.doi.org/10.1126/sciadv.abm8965 .
DABRAVOLSKI S A , ANDREEVA E R , EREMIN I I , et al . The role of pericytes in regulation of innate and adaptive immunity [J]. Biomedicines , 2023 , 11 ( 2 ): 600 . DOI: 10.3390/biomedicines11020600 http://dx.doi.org/10.3390/biomedicines11020600 .
SONG C J , SONG C J , TONG F . Autophagy induction is a survival response against oxidative stress in bone marrow-derived mesenchymal stromal cells [J]. Cytotherapy , 2014 , 16 ( 10 ): 1361 - 1370 . DOI: 10.1016/j.jcyt.2014.04.006 http://dx.doi.org/10.1016/j.jcyt.2014.04.006 .
AGUADÉ-GORGORIÓ J , JAMI-ALAHMADI Y , CALVANESE V , et al . MYCT1 controls environmental sensing in human haematopoietic stem cells [J]. Nature , 2024 , 630 ( 8016 ): 412 - 420 . DOI: 10.1038/s41586-024-07478-x http://dx.doi.org/10.1038/s41586-024-07478-x .
SCHUNK S J , TRIEM S , SCHMIT D , et al . Interleukin-1α is a central regulator of leukocyte-endothelial adhesion in myocardial infarction and in chronic kidney disease [J]. Circulation , 2021 , 144 ( 11 ): 893 - 908 . DOI: 10.1161/CIRCULATIONAHA.121.053547 http://dx.doi.org/10.1161/CIRCULATIONAHA.121.053547 .
ZIPSER C M , CRAGG J J , GUEST J D , et al . Cell-based and stem-cell-based treatments for spinal cord injury: evidence from clinical trials [J]. Lancet Neurol , 2022 , 21 ( 7 ): 659 - 670 . DOI: 10.1016/S1474-4422(21)00464-6 http://dx.doi.org/10.1016/S1474-4422(21)00464-6 .
YANG L , LIU Y X , SUN L Y , et al . Biomass microcapsules with stem cell encapsulation for bone repair [J]. Nano Micro Lett , 2021 , 14 ( 1 ): 4 . DOI: 10.1007/s40820-021-00747-8 http://dx.doi.org/10.1007/s40820-021-00747-8 .
CHEN F , CHE Z D , LIU Y X , et al . Invigorating human MSCs for transplantation therapy via Nrf2/DKK1 co-stimulation in an acute-on-chronic liver failure mouse model [J]. Gastroenterol Rep , 2024 , 12 : goae016 . DOI: 10.1093/gastro/goae016 http://dx.doi.org/10.1093/gastro/goae016 .
WANG P N , CUI Y M , LIU Y Y , et al . Mitochondrial ferritin alleviates apoptosis by enhancing mitochondrial bioenergetics and stimulating glucose metabolism in cerebral ischemia reperfusion [J]. Redox Biol , 2022 , 57 : 102475 . DOI: 10.1016/j.redox.2022.102475 http://dx.doi.org/10.1016/j.redox.2022.102475 .
ZHAO L L , ZOU X T , DENG J Q , et al . hnRNPH1 maintains mitochondrial homeostasis by establishing NRF1/DRP1 retrograde signaling under mitochondrial stress [J]. Cell Death Differ , 2025 , 32 ( 1 ): 118 - 133 . DOI: 10.1038/s41418-024-01331-4 http://dx.doi.org/10.1038/s41418-024-01331-4 .
FANG J K , HOU P B , LIU S S , et al . NAD + salvage governs the immunosuppressive capacity of mesenchymal stem cells [J]. Cell Mol Immunol , 2023 , 20 ( 10 ): 1171 - 1185 . DOI: 10.1038/s41423 http://dx.doi.org/10.1038/s41423 .
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