1.重庆医科大学附属儿童医院儿科研究所,国家儿童健康与疾病临床医学研究中心,儿童发育疾病研究教育部重点实验室,认知发育与学习记忆障碍转化医学重庆市重点实验室,重庆 400014
2.重庆中医药学院药物种植研究所,重庆 408435
Received:07 September 2023,
Revised:2023-09-28,
Accepted:13 October 2023,
Published:28 October 2023
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李兆伦,杜烨鸿,王茂菊,等.胡黄连苷Ⅱ通过增强自噬改善Aβ模型小鼠的学习和记忆功能[J].重庆医科大学学报,2023,48(10):1186-1194.
Li Zhaolun,Du Yehong,Wang Maoju,et al.Picroside Ⅱ improves Aβ-induced learning and memory deficits in mice by enhancing autophagy[J].Journal of Chongqing Medical University,2023,48(10):1186-1194.
李兆伦,杜烨鸿,王茂菊,等.胡黄连苷Ⅱ通过增强自噬改善Aβ模型小鼠的学习和记忆功能[J].重庆医科大学学报,2023,48(10):1186-1194. DOI: 10.13406/j.cnki.cyxb.003364.
Li Zhaolun,Du Yehong,Wang Maoju,et al.Picroside Ⅱ improves Aβ-induced learning and memory deficits in mice by enhancing autophagy[J].Journal of Chongqing Medical University,2023,48(10):1186-1194. DOI: 10.13406/j.cnki.cyxb.003364.
目的
2
探究胡黄连苷(picroside Ⅱ,PicrⅡ)对体内外阿尔茨海默病(Alzheimer’s Disease,AD)模型的学习和记忆功能及自噬相关机制。
方法
2
通过Western blot检测在PicrⅡ(12.5~400 μmol/L)对AD细胞模型中β淀粉样前体蛋白(β-amyloid precursor protein,APP)、β-位点淀粉样前体蛋白切割酶1(β-site APP-cleaving enzyme 1,BACE1)、早老素蛋白1(presenilin 1,PS1)和APP羧基末端片段(carboxyl terminal fragment of β-amyloid precursor protein,CTF)蛋白表达影响,以及PicrⅡ和氯喹(Chloroquine,CQ)(50 μmol/L)或巴佛洛霉素(bafilomycin A1,BafA1)(10 μmol/L)共处理后对APP、BACE1、PS1、C99、螯合体1(sequestosome 1,p62)、微管相关蛋白1轻链3(microtubule-associated protein light chain 3,LC3)、泛素化蛋白的表达影响;利用免疫荧光分析自噬通量;后期构建β-淀粉蛋白(amyloid β,Aβ)模型小鼠,分为WT+PBS组、WT+PicrⅡ组、Aβ+PBS组和Aβ+PicrⅡ组(20 mg/kg),通过Morris水迷宫实验验证小鼠学习和记忆功能,并检测小鼠海马蛋白中P62与LC3蛋白水平。
结果
2
Western blot显示:与对照组相比,PicrⅡ(50 μmol/L)可显著降低APP(60.46±7.97,
P
=0.049)及相关代谢产物蛋白水平,并降低P62[(65.31±3.51)%,
P
=0.041
]
水平,增加LC3Ⅱ[(162.01±12.24)%,
P
<
0.001
]
水平,并且在CQ作用下,PicrⅡ可降低P62[(147.24±10.69)%,
P
<
0.
001
]
及LC3水平[(826.23±39.18)%,
P
<
0.001
]
;自噬通量分析显示:与对照组相比,PicrⅡ增加总荧光数(23.24±1.50,
P
<
0.001)和红色荧光数(3.52±0.33,
P
<
0.001);行为学结果显示:与WT+Aβ组相比,Aβ+PicrⅡ组学习(
F
=17.25,
P
<
0.001)与记忆能力(
F
=6.627,
P
<
0.001)提高,且小鼠海马蛋白中Aβ+PicrⅡ组P62降低[(176.66±11.47)%,
P
=0.023
]
,LC3Ⅱ升高[(81.20±3.69)%,
P
<
0.001
]
。
结论
2
PicrⅡ可通过促进自噬体-溶酶体融合和提高自噬通量增强自噬,从而促进Aβ清除并改善其引起的学习和记忆障碍。
Objective
2
To investigate the effect of picroside Ⅱ(PicrⅡ) on learning and memory functions in Alzheimer’s disease(AD) model
in vivo
and
in vitro
and autophagy-related mechanisms.
Methods
2
Western blot was used to observe the effect of PicrⅡ(12.5-400 μmol/L) on the expression of β-amyloid precursor protein(APP),β-site amyloid precursor protein cleaving enzyme 1(BACE1),presenilin 1(PS1),and carboxyl-terminal fragment of β-amyloid precursor protein(CTF) in the cell model of AD;after co-treatment with PicrⅡ and chloroquine(CQ)(50 μmol/L) or bafilomycin(BafA1)(10 μmol/L),its effect on the expression of APP,BACE1,PS1,C99,sequestosome 1(P62),microtubule-associated protein light chain 3(LC3),and ubiquitinated proteins in cells was observed;immunofluorescence assay was used to analyze autophagic flux. Then a mouse model of Aβ was established,and the mice were divided into WT+PBS group,WT+PicrⅡ group,Aβ+PBS group,and Aβ+PicrⅡ group(20 mg/kg). The Morris water maze test was used to verify the learning and memory functions of Aβ model mice,and the protein expression levels of P62 and LC3 in the hippocampus of mice were measured.
Results
2
Western blot showed that compared with the control group,PicrⅡ(50 μmol/L) significantly reduced the protein expression levels of APP[(60.46±7.97)%,
P
=0.049
]
and related metabol
ites,and it also reduced the expression level of P62[(65.31±3.51)%,
P
=0.041
]
and increased the expression level of LC3Ⅱ[(162.01±12.24)%,
P
<
0.001
]
;with the action of CQ,PicrⅡ could reduce the expression levels of P62[(147.24±10.69)%,
P
<
0.001
]
and LC3Ⅱ[(826.23±39.18)%,
P
<
0.001
]
. The analysis of autophagic flux showed that compared with the control group,PicrⅡ increased the total number of fluorescent dots(23.24±1.50,
P
<
0.001) and the number of red dots(3.52±0.33,
P
<
0.001). The behavioral analysis showed that compared with the WT+Aβ group,the Aβ+PicrⅡ group had significant increases in learning ability(
F
=17.25,
P
<
0.001) and memory ability(
F
=6.627,
P
<
0.001),as well as a significant reduction in P62[(176.66±11.47)%,
P
=0.023
]
and a significant increase in LC3 Ⅱ[(81.20±3.69)%,
P
<
0.001
]
.
Conclusion
2
PicrⅡ can enhance autophagy by promoting autophagosome-lysosome fusion,thereby promoting the clearance of Aβ and improving Aβ-induced learning and memory deficits.
DeTure MA , Dickson DW . The neuropathological diagnosis of Alzheimer’s disease [J ] . Mol Neurodegener , 2019 , 14 ( 1 ): 1 - 18 .
Chen XY , Holtzman DM . Emerging roles of innate and adaptive immunity in Alzheimer’s disease [J ] . Immunity , 2022 , 55 ( 12 ): 2236 - 2254 .
Cho Y , Bae HG , Okun E , et al . Physiology and pharmacology of amyloid precursor protein [J ] . Pharmacol Ther , 2022 , 235 : 108122 .
Das U , Scott DA , Ganguly A , et al . Activity-induced convergence of APP and BACE-1 in acidic microdomains via an endocytosis-dependent pathway [J ] . Neuron , 2013 , 79 ( 3 ): 447 - 460 .
Sun L , Zhou R , Yang G , et al . Analysis of 138 pathogenic mutations in presenilin-1 on the in vitro production of Aβ42 and Aβ40 peptides by γ-secretase [J ] . Proc Natl Acad Sci USA , 2017 , 114 ( 4 ): E476 - E485 .
Zhang HQ , Wei W , Zhao M , et al . Interaction between aβ and tau in the pathogenesis of Alzheimer’s disease [J ] . Int J Biol Sci , 2021 , 17 ( 9 ): 2181 - 2192 .
Morello D . (proto)-oncogènes,croissance cellulaire et développement [J ] . Reprod Nutr Dévelop , 1988 , 28 ( 6B ): 1687 - 1698 .
Sevigny J , Ping CA , Bussière T , et al . The antibody aducanumab reduces Aβ plaques in Alzheimer’s disease [J ] . Nature , 2016 , 537 ( 7618 ): 50 - 56 .
Jin WS , Shen LL , Bu XL , et al . Peritoneal dialysis reduces amyloid-beta plasma levels in humans and attenuates Alzheimer-associated phenotypes in an APP/PS1 mouse model [J ] . Acta Neuropathol , 2017 , 134 ( 2 ): 207 - 220 .
Li W , He PC , Huang YG , et al . Selective autophagy of intracellular organelles:recent research advances [J ] . Theranostics , 2021 , 11 ( 1 ): 222 - 256 .
Yu WH , Cuervo AM , Kumar A , et al . Macroautophagy—a novel β-amyloid peptide-generating pathway activated in Alzheimer’s disease [J ] . J Cell Biol , 2005 , 171 ( 1 ): 87 - 98 .
Nixon RA , Wegiel J , Kumar A , et al . Extensive involvement of autophagy in alzheimer disease:an immuno-electron microscopy study [J ] . J Neuropathol Exp Neurol , 2005 , 64 ( 2 ): 113 - 122 .
Son SM , Jung ES , Shin HJ , et al . Aβ-induced formation of autophagosomes is mediated by RAGE-CaMKKβ-AMPK signaling [J ] . Neurobiol Aging , 2012 , 33 ( 5 ): 1006. e11 - 1006 .e23.
Lee JH , Yang DS , Goulbourne CN , et al . Faulty autolysosome acidification in Alzheimer’s disease mouse models induces autophagic build-up of Aβ in neurons,yielding senile plaques [J ] . Nat Neurosci , 2022 , 25 ( 6 ): 688 - 701 .
Caccamo A , De Pinto V , Messina A , et al . Genetic reduction of mammalian target of rapamycin ameliorates Alzheimer’s disease-like cognitive and pathological deficits by restoring hippocampal gene expression signature [J ] . J Neurosci , 2014 , 34 ( 23 ): 7988 - 7998 .
Pandit S , Shitiz K , Sood H , et al . Expression pattern of fifteen genes of non-mevalonate(MEP) and mevalonate(MVA) pathways in different tissues of endangered medicinal herb Picrorhiza kurroa with respect to picrosides content [J ] . Mol Biol Rep , 2013 , 40 ( 2 ): 1053 - 1063 .
Stuppner H , Wagner H . New cucurbitacin glycosides from Picrorhiza kurrooa [J ] . Planta Med , 1989 , 55 ( 6 ): 559 - 563 .
Kuusisto E , Salminen A , Alafuzoff I . Early accumulation of p62 in neurofibrillary tangles in Alzheimer’s disease:possible role in tangle formation [J ] . Neuropathol Appl Neurobiol , 2002 , 28 ( 3 ): 228 - 237 .
Wang TT , Zhai L , Guo YL , et al . Picroside Ⅱ has a neuroprotective effect by inhibiting ERK1/2 activation after cerebral ischemic injury in rats [J ] . Clin Exp Pharma Physio , 2015 , 42 ( 9 ): 930 - 939 .
Guo YL , Xu XY , Li Q , et al . Anti-inflammation effects of picroside 2 in cerebral ischemic injury rats [J ] . Behav Brain Funct , 2010 , 6 : 43 .
Li T , Liu JW , Zhang XD , et al . The neuroprotective effect of picroside II from hu-Huang-Lian against oxidative stress [J ] . Am J Chin Med , 2007 , 35 ( 4 ): 681 - 691 .
Lorenzo A , Yankner BA . Beta-amyloid neurotoxicity requires fibril formation and is inhibited by Congo red [J ] . Proc Natl Acad Sci U S A , 1994 , 91 ( 25 ): 12243 - 12247 .
Boland B , Yu WH , Corti O , et al . Promoting the clearance of neurotoxic proteins in neurodegenerative disorders of ageing [J ] . Nat Rev Drug Discov , 2018 , 17 ( 9 ): 660 - 688 .
Schmidt MF , Gan ZY , Komander D , et al . Ubiquitin signalling in neurodegeneration:mechanisms and therapeutic opportunities [J ] . Cell Death Differ , 2021 , 28 ( 2 ): 570 - 590 .
Mizushima N , Yoshimori T , Levine B . Methods in mammalian autophagy research [J ] . Cell , 2010 , 140 ( 3 ): 313 - 326 .
Rubinsztein DC , Cuervo AM , Ravikumar B , et al . In search of an “autophagomometer” [J ] . Autophagy , 2009 , 5 ( 5 ): 585 - 589 .
Klionsky D , Abeliovich H , Agostinis P , et al . Guidelines for the use and interpretation of assays for monitoring autophagy in higher eukaryotes [J ] . Autophagy , 2008 , 4 : 151 - 175 .
Du YH , Du YX , Zhang Y , et al . MKP-1 reduces Aβ generation and alleviates cognitive impairments in Alzheimer’s disease models [J ] . Signal Transduct Target Ther , 2019 , 4 : 58 .
Gong B , Chen F , Pan Y , et al . SCFFbx2-E3-ligase-mediated degradation of BACE1 attenuates Alzheimer’s disease amyloidosis and improves synaptic function [J ] . Aging Cell , 2010 , 9 ( 6 ): 1018 - 1031 .
Viswanathan J , Haapasalo A , Böttcher C , et al . Alzheimer’s disease-associated ubiquilin-1 regulates presenilin-1 accumulation and aggresome formation [J ] . Traffic Cop Den , 2011 , 12 ( 3 ): 330 - 348 .
Pohl C , Dikic I . Cellular quality control by the ubiquitin-proteasome system and autophagy [J ] . Science , 2019 , 366 ( 6467 ): 818 - 822 .
Wang Y , Lew D . Le, Autophagy and Ubiquitin-Proteasome System [J ] . Advances In Experimental Medicine and Biology , 2019 , 1206 : 527 - 550 .
Wang TT , Zhu L , Liu HL , et al . Picroside II protects SH-SY 5 Y cells from autophagy and apoptosis following oxygen glucose deprivation/reoxygen injury by inhibiting JNK signal pathway [J ] . Anat Rec , 2019 , 302 ( 12 ): 2245 - 2254 .
Dikic I , Elazar Z . Mechanism and medical implications of mammalian autophagy [J ] . Nat Rev Mol Cell Biol , 2018 , 19 ( 6 ): 349 - 364 .
Kim KH , Lee MS . Autophagy—a key player in cellular and body metabolism [J ] . Nat Rev Endocrinol , 2014 , 10 ( 6 ): 322 - 337 .
Stempels FC , Janssens MH , Ter Beest M , et al . Novel and conventional inhibitors of canonical autophagy differently affect LC3-associated phagocytosis [J ] . FEBS Lett , 2022 , 596 ( 4 ): 491 - 509 .
Mauthe M , Orhon I , Rocchi C , et al . Chloroquine inhibits autophagic flux by decreasing autophagosome-lysosome fusion [J ] . Autophagy , 2018 , 14 ( 8 ): 1435 - 1455 .
Liu XC , Meng L , Li X , et al . Regulation of FN 1 degradation by the p62/SQSTM1-dependent autophagy–lysosome pathway in HNSCC [J ] . Int J Oral Sci , 2020 , 12 : 34 .
Galluzzi L , Bravo-San Pedro JM , Levine B , et al . Pharmacological modulation of autophagy:therapeutic potential and persisting obstacles [J ] . Nat Rev Drug Discov , 2017 , 16 ( 7 ): 487 - 511 .
Ferreira PMP , Sousa RWR , Ferreira JRO , et al . Chloroquine and hydroxychloroquine in antitumor therapies based on autophagy-related mechanisms [J ] . Pharmacol Res , 2021 , 168 : 105582 .
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