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花形乳糖装载姜黄素固体脂质纳米粒吸入微粉对 COPD 模型小

          鼠肺部炎症的影响及机制
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          李 楠 ,李 旭,王 梓,杨 萍,孔令钰(天津市医药科学研究所,天津 300020)
          中图分类号  R943      文献标志码  A      文章编号  1001-0408(2023)14-1691-06
          DOI  10.6039/j.issn.1001-0408.2023.14.06

          摘  要  目的  探讨肺吸入花形乳糖(FL)装载姜黄素(Cur)固体脂质纳米粒(SLN)吸入微粉(Cur-SLN-FL)对慢性阻塞性肺疾病
         (COPD)模型小鼠肺部炎症的影响及机制。方法  对Cur-SLN-FL的肺部刺激性进行考察,明确吸入材料的局部安全性。然后随
          机选用 10 只小鼠经气管注入生理盐水,其余 50 只小鼠均滴注猪胰蛋白酶溶液(浓度为 33.3 mg/mL、给药剂量为 1.0 mL/kg)复制
          COPD模型,小鼠正常喂养28 d后分为假手术组、模型组、布地奈德组(20 mg/kg)和Cur-SLN-FL高、低剂量(100、50 mg/kg)组,每
          组10只。按要求给予相应药物,每日1次,连续14 d。末次给药24 h后,采集各组小鼠支气管肺泡灌洗液(BALF)并对其中的白细
          胞分类计数;采用苏木素-伊红(HE)染色观察气管和肺组织病理形态;采用Masson染色检测肺组织胶原纤维沉积;采用免疫组织
          化学法检测肺组织中核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)、胱天蛋白酶1(caspase-1)、白细胞介素1β(IL-1β)的阳性表
          达;采用Western blot法检测肺组织中NLRP3、caspase-1、核因子κB(NF-κB)的蛋白表达。结果  Cur-SLN-FL无明显肺部刺激性。
          与假手术组比较,模型组小鼠BALF中白细胞总数、中性粒细胞、嗜酸性粒细胞均显著增加,淋巴细胞数显著降低(P<0.05);气管
          见纤毛柱状上皮增生增厚、脱落,腔内可见黏液蓄积,肺组织可见间质炎性细胞浸润;肺组织胶原纤维沉积明显增加,肺组织中
          NLRP3、caspase-1、IL-1β的阳性表达明显增强,肺组织中NLRP3、caspase-1、NF-κB蛋白的表达水平均显著升高(P<0.05)。给予
          Cur-SLN-FL后,上述各指标均有一定程度改善。结论  Cur-SLN-FL能够改善COPD模型小鼠的肺部炎症反应,其机制可能是通过
          调控NLRP3信号通路,抑制caspase-1、NF-κB、IL-1β的表达,进而缓解小鼠肺组织纤维化的进程。
          关键词  花形乳糖;姜黄素固体脂质纳米粒;吸入微粉;肺部刺激性;慢性阻塞性肺疾病;NLRP3炎症小体

          Effects  and  mechanism  of  Curcumin  solid  lipid  nanoparticles  loaded  with  flower-shaped  lactose  for
          inhalation on pulmonary inflammation in COPD model mice
          LI Nan,LI Xu,WANG Zi,YANG Ping,KONG Lingyu(Tianjin  Institute  of  Pharmaceutical  Science,  Tianjin
          300020, China)


          ABSTRACT   OBJECTIVE  To  investigate  the  effects  and  mechanism  of  curcumin (Cur)  solid  lipid  nanoparticles (SLN)  loaded
          with  flower-shaped  lactose (Cur-SLN-FL)  for  lung  inhalation  on  lung  inflammation  in  chronic  obstructive  pulmonary  disease
         (COPD)  model  mice.  METHODS  Firstly,  the  irritation  of  Cur-SLN-FL  to  lung  tissue  was  investigated,  and  the  local  safety  of
          inhalation  materials  was  determined.  Then,  10  mice  were  randomly  selected  and  injected  with  normal  saline  through  the  trachea,
          and  the  other  50  mice  were  all  injected  with  porcine  trypsin  solution (concentration  of  33.3  mg/mL,  dosage  of  1.0  mL/kg)  to
          induce  the  COPD  model.  After  normal  feeding  for  28  days,  the  mice  were  divided  into  sham  operation  group,  model  group,
          budesonide  group (20  mg/kg),  Cur-SLN-FL  high-dose  and  low-dose  groups (100,  50  mg/kg),  with  10  mice  in  each  group.  The
          corresponding  drugs  were  given  to  each  group,  once  a  day,  for  14  consecutive  days.  Twenty-four  hours  after  the  last
          administration,  the  bronchoalveolar  lavage  fluid (BALF)  of  mice  in  each  group  was  collected  and  the  differential  count  of  white
          blood cells was determined. Hematoxylin-eosin (HE) staining was used to observe the histopathology of the trachea and lung tissue
          in  each  group.  Masson  staining  was  used  to  detect  collagen  deposition  in  the  lung  tissue  of  mice  in  each  group.
          Immunohistochemical  method  was  used  to  detect  the  positive  expressions  of  nucleotide-binding  oligomerization  domains-like
          receptor  protein-3 (NLRP3),  caspase-1  and  interleukin-1β (IL-1β)  in  lung  tissue  of  mice.  Western  blot  assay  was  used  to  detect
          the protein expressions of NLRP3, caspase-1 and nuclear factor of kappa B(NF-κB) in lung tissue. RESULTS Cur-SLN-FL had no
          obvious  pulmonary  irritation.  Compared  with  the  sham  operation  group,  the  total  number  of  white  blood  cells,  neutrophils  and
          eosinophils  in  BALF  of  the  model  group  increased  significantly,  while  the  number  of  lymphocytes  decreased  significantly (P<
                                                             0.05);  ciliated  columnar  epithelium  proliferated,  thickened
             Δ 基金项目 国家自然科学基金资助项目(No.81903565);天津市
                                                             and exfoliated in the trachea, mucus accumulated in the cavity
          科技计划项目(No.21JCYBJC01630);天津市卫生健康科技项目(No.
                                                             and interstitial inflammatory cells infiltrated in the lung tissue;
          TJWJ2021MS046,No.TJWJ2021QN078)
             *第一作者 助理研究员,硕士。研究方向:肺部递药系统。                     the  deposition  of  collagen  fibers  in  lung  tissue  increased
          E-mail:llittsnows@126.com                          significantly,  the  positive  expressions  of  NLRP3,  caspase-1
             #  通信作者 副研究员。研究方向:纳米递药系统。E-mail:                and  IL-1β  in  lung  tissue  increased  significantly,  and  the
          lingyu_kong@163.com                                expressions  of  NLRP3,  caspase-1  and  NF-κB  protein  in  lung


          中国药房  2023年第34卷第14期                                              China Pharmacy  2023 Vol. 34  No. 14    · 1691 ·
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