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INTERNATIONAL IMMUNOPHARMACOLOGY · 2023 · IF 5.6

Hydrogen inhalation enhances autophagy via the AMPK/mTOR pathway, thereby attenuating doxorubicin-induced cardiac injury

Tianjiao Ma,Lei Yang,Binmei Zhang,Xin Lv,Feifei Gong,Wei Yang

Aims Doxorubicin is a drug widely used in clinical cancer treatment, but severe cardiotoxicity limits its clinical application. Autophagy disorder is an important factor in the mechanism of doxorubicin-induced cardiac injury. As the smallest molecule in nature, hydrogen has various biological effects such as anti-oxidation, anti-apoptosis and regulation of autophagy. Hydrogen therapy is currently considered to be an emerging therapeutic method, but the effect and mechanism of hydrogen on doxorubicin-induced myocardial injury have not been determined. The purpose of this study was to investigate the protective effect of hydrogen inhalation on doxorubicin-induced chronic myocardial injury and its effect and mechanism on autophagy. Methods In this study, we established a chronic heart injury model by intraperitoneal injection of doxorubicin in rats for 30 days, accumulating 20 mg/kg. The effect of hydrogen inhalation on the cardiac function in rats was explored by echocardiography, Elisa, and H&E staining. To clarify the influence of autophagy, we detected the expression of LC3 and related autophagy proteins in vivo and in vitro by immunofluorescence and western blot.In order to further explore the mechanism of autophagy, we added pathway inhibitors and used western blot to preliminarily investigate the protective effect of hydrogen inhalation on myocardial injury caused by doxorubicin. Results Hydrogen inhalation can improve doxorubicin-induced cardiac function decline and pathological structural abnormalities in rats. It was confirmed by immunofluorescence that hydrogen treatment could restore the expression of autophagy marker protein LC3 (microtubule-associated protein 1 light chain 3) in cardiomyocytes reduced by doxorubicin, while reducing cardiomyocyte apoptosis. Mechanistically, Western blot results consistently showed that hydrogen treatment up-regulated the ratio of p-AMPK (phosphorylated AMP-dependent protein kinase) to AMPK and down-regulated p-mTOR (phosphorylated mammalian target of rapamycin) and mTOR ratio. Conclusions These results suggest that hydrogen inhalation can activate autophagy through the AMPK/mTOR pathway and protect against myocardial injury induced by doxorubicin. Hydrogen inhalation therapy may be a potential treatment for doxorubicin-induced myocardial injury.

CAS / MDL: 28718-90-3
研究领域: 医学 · 药理学 · 心血管科学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Journal of Orthopaedic Surgery and Research · 2025 ·Vol. 20 ·期 1 ·1-13 · IF 2.8

The increase in autophagy induced by naringin alleviates Schwann cell apoptosis mediated by the AMPK/mTOR signalling pathway

Lv Jianwei,Shan Duo,Jia Haobo,Wang Zengliang

Background Peripheral nerve injury (PNI) is currently an intractable disease for clinical therapeutics. Schwann cells (SCs) play pivotal roles in peripheral nerve regeneration. Naringin, a natural flavonoid, has potent beneficial effects on peripheral neuropathy. Researchers have rarely reported whether naringin attenuates SC apoptosis and the relevant mechanisms. Therefore, this study aimed to evaluate the antiapoptotic effects of naringin on SCs and probe the potential molecular mechanisms involved. Methods An in vitro SC apoptotic model was established by culturing RSC96 cells in foetal bovine serum (FBS)-free medium, namely, serum starvation. SC apoptosis was assessed by TUNEL staining and flow cytometry. The activities of the mitochondrial apoptotic pathway and autophagy in SCs were detected by western blotting and immunofluorescence staining. The autophagy inhibitor 3-methyladenine (3-MA) and the AMPK inhibitor Compound C were used to investigate whether autophagy mediated by AMPK/mTOR signalling is involved in the regulation of SC apoptosis by naringin. Results The results showed that starvation induced SC apoptosis and blocked autophagic flux. Naringin ameliorated SC apoptosis under starvation conditions by increasing the autophagy activity mediated by the AMPK/mTOR cascade, as Compound C inhibited its autophagy-activating effect, and 3-MA reversed its antiapoptotic efficacy. Conclusions Naringin mitigated starvation-induced SC apoptosis by increasing autophagy, which was attributed to the regulation of the AMPK/mTOR pathway. This study provides evidence that naringin could be an effective alternative drug for promoting peripheral nerve regeneration.

研究领域: 神经科学 · 药理学 · 细胞生物学
✓ 已验证 DOI PubMed 高影响因子
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DRUG DEVELOPMENT RESEARCH · 2020 ·Vol. 81 ·期 7 ·875-884 · IF 1.902

Ginsenoside Rg3 attenuates ovariectomy-induced osteoporosis via AMPK/mTOR signaling pathway

Xiaonan Zhang,Fenglan Huang,Xiaoyong Chen,Xiaoqing Wu,Jinyu Zhu

Ginsenoside Rg3, a ginsenoside isolated from Panax ginseng , can regulate autophagy via AMP-activated protein kinase/mammalian target of rapamycin (AMPK/mTOR) signaling pathway. AMPK/mTOR signaling and autophagy have been reported to be involved in osteogenesis. Here, the effect of Rg3 on ovariectomy (OVX)-induced osteoporosis is explored. In vivo, rats were treated with 20 mg/kg Rg3 after OVX and the body weight (BW) was monitored. Bone mineral density (BMD), hematoxylin–eosin staining of femur tissues, osteogenesis, autophagy, and AMPK/mTOR signaling were analyzed. In vitro, MC3T3-E1 cells were treated with 0, 1, 5, 10, 20, and 100 μmol/L Rg3. 10 and 20 μmol/L Rg3, which had no significant effect on cell viability and significantly affected AMPK/mTOR signaling, were chosen for further analysis. Then osteogenic differentiation was induced with Rg3 or/and AMPK inhibitor (Compound C). AMPK/mTOR signaling, autophagy, osteogenic differentiation, and mineralization by Alizarin Red staining were analyzed. The expression or activity of AMPK/mTOR signaling-related proteins, autophagy markers, and osteogenesis markers was measured by western blotting or commercial kits, and cell viability by cell counting kit-8 assay kits. Rg3 significantly alleviated OVX-induced BW increases, BMD declines and histological changes of femur tissues, promoted osteogenesis, autophagy, and AMPK signaling, but inhibited mTOR signaling in vivo. Moreover, Rg3 significantly enhanced AMPK signaling, autophagy, osteogenic differentiation, and mineralization, but suppressed mTOR signaling in vitro. However, Compound C significantly reversed Rg3-induced alterations in vitro, indicating that Rg3 regulated autophagy, osteogenic differentiation, and mineralization via AMPK/mTOR signaling. Hence, it was speculated that Rg3 might attenuate OVX-induced osteoporosis via AMPK/mTOR signaling pathway.

研究领域: 药理学 · 内分泌学 · 骨科 · 细胞生物学
✓ 已验证 DOI PubMed 高影响因子
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES · 2025 ·Vol. 26 ·期 8 ·3603 · IF 4.9

Methylmercury Chloride Exposure Affects Oocyte Maturation Through AMPK/mTOR-Mediated Mitochondrial Autophagy

Shengkui Hou,Caiyu Wang,Xin Ma,Jing Zhao,Jun Wang,Yi Fang,Hongyu Liu,He Ding,Jing Guo,Wenfa Lu

Mercury, a prevalent heavy metal, negatively impacts oocyte maturation. However, the exact mechanism by which methylmercury chloride (MMC) affects this process remains elusive. The present study found that MMC administration triggered meiotic failure in oocytes by disrupting cumulus cell expansion, leading to compromised spindle apparatus and altered chromosomal architecture, which are crucial for oocyte development. This disruption is characterized by abnormal microtubule organization and defective chromosome alignment. Additionally, MMC exposure caused oxidative stress-induced apoptosis due to mitochondrial dysfunction, as indicated by decreased mitochondrial membrane potential, mitochondrial content, mitochondrial DNA copy number, and adenosine triphosphate levels. Proteomic analysis identified 97 differentially expressed proteins, including P62, an autophagy marker. Our results confirmed that MMC induced autophagy, particularly through the hyperactivation of the mitochondrial autophagy to remove damaged and normal mitochondria. The mitochondrial reactive oxygen species (ROS) scavenger Mito-TEMPO alleviated oxidative stress and mitochondrial autophagy levels, suggesting that mitochondrial ROS initiates this autophagic response. Notably, MMC activates mitochondrial autophagy via the monophosphate-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) signal pathway due to mitochondrial dysfunction. In vivo studies in mice revealed that MMC exposure decreased reproductive performance, attributed to excessive mitochondrial autophagy leading to reduced oocyte quality. Overall, these findings demonstrate that MMC exposure impairs oocyte maturation via the hyperactivation of mitochondrial autophagy induced by mitochondrial dysfunction.

CAS / MDL: 115-09-3
研究领域: 生殖生物学 · 毒理学 · 分子生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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JOURNAL OF INORGANIC BIOCHEMISTRY · 2022 · IF 4.336

Molybdenum and cadmium co-exposure induces CaMKKβ/AMPK/mTOR pathway mediated-autophagy by subcellular calcium redistribution in duck renal tubular epithelial cells

Ting Cui,Xueru Wang,Junyu Hu,Tianjin Lin,Zhisheng Hu,Huiling Guo,Gang Huang,Guoliang Hu,Caiying Zhang

Excessive molybdenum (Mo) and cadmium (Cd) are toxic environmental pollutants . Our previous research confirmed excessive Mo and Cd co-induced calcium homeostasis disorder and autophagy in duck kidneys, but how calcium ion (Ca 2+ ) regulates autophagy is unclear. The results revealed that the Mo- and/or Cd-induced cytosolic Ca 2+ concentration ([Ca 2+ ] c ) increase mainly came from intracellular calcium stores. Mo and/or Cd caused mitochondrial Ca 2+ content ([Ca 2+ ] mit ) and [Ca 2+ ] c increase with endoplasmic reticulum (ER) Ca 2+ content ([Ca 2+ ] ER ) decrease and upregulated calcium homeostasis-related factor expression levels, but 2-Aminoethoxydiphenyl borate (2-APB) reversed subcellular Ca 2+ redistribution. Increased Phospholipase C (PLC) and inositol 1,4,5-trisphosphate (IP 3 ) activities and inositol 1,4,5-trisphosphate receptor (IP 3 R) expression level were observed in Mo- and/or Cd-treated cells, which was reversed by the PLC inhibitor U-73122. 2-APB and 1,2-Bis (2-aminophenoxy) ethane-N,N,N′,N′-tetraacetic acid acetoxymethyl ester (BAPTA-AM) addition mitigated [Ca 2+ ] c and autophagy (variations in microtubule-associated protein light chain 3 (LC3), LC3B-II/LC3B-I, autophagy related 5 (ATG5), sequestosome-1(P62), programmed cell death-1 (Beclin-1) and Dynein expression levels, LC3 puncta, autophagosomes and acid vesicle organelles) under Mo and/or Cd treatment, respectively, while thapsigargin (TG) had the opposite impacts. Additionally, the calmodulin-dependent protein kinase kinase β (CaMKKβ) inhibitor STO-609 reversed the increased CaMKKβ, adenosine 5′-monophosphate-activated protein kinase (AMPK), Beclin-1, and LC3B-II/LC3B-I protein expression levels and reduced mammalian target of rapamycin (mTOR) and P62 protein expression levels in Mo- and/or Cd-exposed cells. Collectively, the results confirmed that [Ca 2+ ] c overload resulted from PLC/IP 3 /IP 3 R pathway-mediated ER Ca 2+ release, and then activated autophagy by the CaMKKβ/AMPK/mTOR pathway in Mo- and/or Cd-treated duck renal tubular epithelial cells.

CAS / MDL: 12054-85-2 7790-84-3
研究领域: 毒理学 · 细胞生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Frontiers in Pharmacology · 2021 · IF 5.811

Kun-Dan Decoction Ameliorates Insulin Resistance by Activating AMPK/mTOR-Mediated Autophagy in High-Fat Diet-Fed Rats

Su Zuqing,Zeng Kexue,Feng Bing,Tang Lipeng,Sun Chaoyue,Wang Xieqi,Li Caiyun,Zheng Guangjuan,Zhu Ying

Background: Metabolic syndrome is characterized by central obesity, hyperglycemia and hyperlipidemia. Insulin resistance is the leading risk factor for metabolic syndrome. Kun-Dan decoction (KD), a traditional Chinese medicine, has been applied to treat patients with metabolic syndrome for over ten years. It is increasingly recognized that autophagy deficiency is the key cause of metabolic syndrome. Therefore, we aimed to explore whether KD can activate autophagy to improve metabolic syndrome.Methods: Network pharmacology was used to explore the underlying mechanism of KD in the treatment of metabolic syndrome. The high-fat diet-fed rats and oleic acid-induced LO2 cells were employed in our study. Oral glucose tolerance test and insulin tolerance test, obesity and histological examination, serum cholesterol, triglyceride, low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), homeostasis model assessment of insulin resistance (HOMA-IR) and insulin sensitivity in high-fat diet-fed rats were analyzed. Furthermore, the protein expressions of adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK), phospho-AMPK, mammalian target of rapamycin (mTOR), phospho-mTOR, p62, autophagy related protein (Atg) 5, Atg7, Atg12, Atg13, Atg16L1 and microtubule-associated protein 1A/1B-light chain 3 (LC3)-Ⅱ/Ⅰ were examined in rats and LO2 cells. Moreover, autophagy activator rapamycin and inhibitor 3-methyladenine, and small interfering RNA against Atg7 were utilized to verify the role of autophagy in the treatment of metabolic syndrome by KD in oleic acid-induced LO2 cells.Results: Results from network pharmacology indicated that targeted insulin resistance might be the critical mechanism of KD in the treatment of metabolic syndrome. We found that KD significantly suppressed obesity, serum cholesterol, triglyceride and LDL-C levels and increased serum HDL-C level in high-fat diet-fed rats. Furthermore, KD enhanced insulin sensitivity and attenuated HOMA-IR in high-fat diet-fed rats. Western blot showed that KD could enhance autophagy to increase the insulin sensitivity of high-fat diet-fed rats and oleic acid-induced LO2 cells. Furthermore, 3-methyladenine and small interfering RNA against Atg7 could reverse the protective effect of KD on LO2 cells. However, rapamycin could cooperate with KD to enhance autophagic activation to increase insulin sensitivity in LO2 cells.Conclusion: The induction of autophagy may be the major mechanism for KD to improve insulin resistance and metabolic syndrome.

CAS / MDL: 112-80-1
研究领域: 药理学 · 内分泌学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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MOLECULES · 2019 ·Vol. 24 ·期 19 ·3624 · IF 3.06

Schizandrin Protects against OGD/R-Induced Neuronal Injury by Suppressing Autophagy: Involvement of the AMPK/mTOR Pathway

Guangyun Wang,Tiezheng Wang,Yuanyuan Zhang,Fang Li,Boyang Yu,Junping Kou

The neuroprotective role of schizandrin (SA) in cerebral ischemia-reperfusion (I/R) was recently highlighted. However, whether SA plays a regulatory role on autophagy in cerebral I/R injury is still unclear. This study aimed to explore whether the neuroprotective mechanisms of SA were linked to its regulation of AMP-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR)/autophagy pathway in vivo and in vitro. The present study confirmed that SA significantly improved oxygen-glucose deprivation/re-oxygenation (OGD/R)-induced PC12 cells injury. The results of immunoblotting and confocal microscope showed that SA decreased autophagy in OGD/R-injured PC12 cells, which was reflected by the decreased Beclin-1 and LC3-II expression, autophagy flux level, and LC3 puncta formation. In addition, the autophagy inducer rapamycin partially prevented the effects of SA on cell viability and autophagy after OGD/R, whereas the autophagy inhibitor 3-methyladenine (3-MA) exerted the opposite effect. The results of Western blotting showed that SA markedly decreased the phosphorylation of AMPK (p-AMPK), whereas the phosphor-mTOR (p-mTOR) levels increased in the presence of OGD/R insult. Furthermore, pretreatment with the AMPK inducer AICAR partially reversed the protective effects and autophagy inhibition of SA. However, AMPK inhibitor Compound C pretreatment further promoted the inhibition of SA on autophagy induction and cell damage induced by OGD/R. Taken together, these findings demonstrate that SA protects against OGD/R insult by inhibiting autophagy through the regulation of the AMPK-mTOR pathway and that SA may have therapeutic value for protecting neurons from cerebral ischemia.Keywords:OGD/R;autophagy;AMPK/mTOR;schizandrin;ischemic stroke

研究领域: 神经科学 · 药理学 · 分子生物学
✓ 已验证 DOI PubMed 高影响因子
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MOLECULES · 2023 ·Vol. 28 ·期 8 ·3482 · IF 4.6

Protective Effect of Ferulic Acid on Lipopolysaccharide-Induced BV2 Microglia Inflammation via AMPK/mTOR Signaling Pathway

Xingru Chen,Xiaolan Zhou,Xiaoqing Cheng,Liting Lin,Qi Wang,Ruoting Zhan,Qingguang Wu,Sijun Liu

In neurodegenerative diseases, microglial activation and neuroinflammation are essential for the control and progression of neurodegenerative diseases. Mitigating microglium-induced inflammation is one strategy for hindering the progression of neurodegenerative diseases. Ferulic acid (FA) is an effective anti-inflammatory agent, but its potential role and regulation mechanism in neuroinflammatory reactions have not been fully studied. In this study, the neuroinflammation model was established by lipopolysaccharide (LPS), and the inhibitory effect of FA on neuroinflammation of BV2 microglia was studied. The results showed that FA significantly reduced the production and expression of reactive oxygen species (ROS), tumor necrosis factor-α (TNF-α), leukocyte-6 (IL-6) and interleukin-1β (IL-1β). We further studied the mechanism of FA’s regulation of LPS-induced BV2 neuroinflammation and found that FA can significantly reduce the expression of mTOR in BV2 microglia induced by LPS, and significantly increase the expression of AMPK, indicating that FA may have an anti-inflammatory effect by activating the AMPK/mTOR signaling pathway to regulate the release of inflammatory mediators (such as NLRP3, caspase-1 p20 and IL-1β). We further added an autophagy inhibitor (3-MA) and an AMPK inhibitor (compound C, CC) for reverse verification. The results showed that FA’s inhibitory effects on TNF-α, IL-6 and IL-1β and its regulatory effect on AMPK/mTOR were destroyed by 3-MA and CC, which further indicated that FA’s inhibitory effect on neuroinflammation is related to its activation of the AMPK/mTOR autophagy signaling pathway. In a word, our experimental results show that FA can inhibit LPS-induced neuroinflammation of BV2 microglia by activating the AMPK/mTOR signaling pathway, and FA may be a potential drug for treating neuroinflammatory diseases.Keywords:BV2 microglia;ferulic acid;autophagy;AMPK/mTOR signaling pathway;NLRP3 inflammasome;neuroinflammation

CAS / MDL: 866405-64-3
研究领域: 神经科学 · 药理学 · 细胞生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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IN VIVO · 2024 ·Vol. 38 ·期 3 ·1133-1142 · IF 1.8

Ghrelin Induces the Production of Hypothalamic NPY Through the AMPK-mTOR Pathway to Alleviate Cancer-induced Bone Pain

LONGJIE XU,LILI HOU,CHUN CAO,XIAOHUA LI

Background/Aim: Cancer-induced bone pain (CIBP) is one of the most common symptoms of bone metastasis of tumor cells. The hypothalamus may play a pivotal role in the regulation of CIBP. However, little is known about the exact mechanisms. Materials and Methods: First, we established a CIBP model to explore the relationship among hypothalamic ghrelin, NPY and CIBP. Then, we exogenously administered NPY and NPY receptor antagonists to investigate whether hypothalamic NPY exerted an antinociceptive effect through binding to NPY receptors. Finally, we exogenously administered ghrelin to investigate whether ghrelin alleviated CIBP by inducing the production of hypothalamic NPY through the AMPK-mTOR pathway. Body weight, food intake and behavioral indicators of CIBP were measured every 3 days. Hypothalamic ghrelin, NPY and the AMPK-mTOR pathway were also measured. Results: The expression of hypothalamic ghrelin and NPY was simultaneously decreased in cancer-bearing rats, which was accompanied by CIBP. Intracerebroventricular (i.c.v.) administration of NPY significantly alleviated CIBP in the short term. The antinociceptive effect of NPY was reversed with the i.c.v. administration of the Y1R and Y2R antagonists. The administration of ghrelin activated the AMPK-mTOR pathway and induced hypothalamic NPY production to alleviate CIBP. This effect of ghrelin on NPY and antinociception was reversed with the administration of a GHS-R1α antagonist. Conclusion: Ghrelin could induce the production of hypothalamic NPY through the AMPK-mTOR pathway to alleviate CIBP, which can provide a novel therapeutic mechanism for CIBP.

研究领域: 神经科学 · 疼痛研究 · 肿瘤学 · 药理学
✓ 已验证 DOI PubMed 高影响因子
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Journal of Ginseng Research · 2025 · IF 5.6

(20S)-Protopanaxatriol Attenuates Ang II-Induced Renal Injury via PTPN1-Mediated AMPK/mTOR Signaling Pathway

Risheng Zhao,Zhuoqun Wang,Chang Liu,Linxin Zhang,Min Zhang,Huizhu Du,Gege Yang,Haiming Sun,Wei Liu,Shuang Yan,Mengyang Wang

Background (20S)-Protopanaxatriol (PPT), a bioactive triterpenoid from Panax ginseng , has been used in Traditional Chinese Medicine (TCM) to tonify kidney yang and regulate blood pressure. The research aimed to elucidate PPT's protective effects against angiotensin II (Ang II)-induced renal injury. Methods A C57BL/6 mouse model of kidney injury was established by continuous infusion of Ang II for 4 weeks using an osmotic minipump. Treatment with PPT was initiated two weeks after Ang II infusion and administered daily for 14 days. Molecular docking, drug affinity response target stability (DARTS), and cellular thermal shift assay (CETSA) were employed to identify and validate potential targets of PPT in alleviating Ang II-induced renal injury. Additionally, biochemical assays, histopathological analysis, and Western blotting were performed to assess renal function, tissue damage, and signaling pathway modulation. Results Our findings demonstrated that PPT exerted protective effects against Ang II-induced renal dysfunction in mice by significantly attenuating renal fibrosis and inflammation. Mechanistically, PPT targeted PTPN1 and inhibited the AMPK/mTOR signaling pathway, thereby effectively alleviating autophagy dysregulation in both renal tissues of mice and Ang II-stimulated NRK-52E cells in vitro. Molecular docking, DARTS, and CETSA experiments confirmed PTPN1 as a direct target of PPT, providing a molecular basis for its renoprotective effects. Conclusion These findings validate ginseng's traditional use in kidney disorders and demonstrate PPT's potential as a therapeutic agent for hypertensive nephropathy by targeting PTPN1/AMPK/mTOR signaling. Further clinical exploration is needed to translate these results into practice.

CAS / MDL: 4474-91-3
研究领域: 药理学 · 肾脏病学 · 中医中药 · 分子生物学 · 信号转导
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Nutrients · 2022 ·Vol. 14 ·期 12 ·2413 · IF 6.706

Resveratrol Induces Autophagy and Apoptosis in Non-Small-Cell Lung Cancer Cells by Activating the NGFR-AMPK-mTOR Pathway

Jiaqiao Li,Yameng Fan,Yan Zhang,Yamei Liu,Yan Yu,Mao Ma

Resveratrol (RSV) has been reported to induce autophagy and apoptosis in non-small-cell lung cancer A549 cells, and the nerve growth factor receptor (NGFR) regulates autophagy and apoptosis in many other cells. However, the effect of NGFR on autophagy and apoptosis induced by RSV in A549 cells remains unclear. Here, we found that RSV reduced the cell survival rate in time- and concentration-dependent manners, activating autophagy and apoptosis. Lethal autophagy was triggered by RSV higher than 55 μM. The relationship between autophagy and apoptosis depended on the type of autophagy. Specifically, mutual promotion was observed between apoptosis and lethal autophagy. Conversely, cytoprotective autophagy facilitated apoptosis but was unaffected by apoptosis. RSV enhanced NGFR by increasing mRNA expression and prolonging the lifespan of NGFR mRNA and proteins. RSV antagonized the enhanced autophagy and apoptosis caused by NGFR knockdown. As the downstream pathway of NGFR, AMPK-mTOR played a positive role in RSV-induced autophagy and apoptosis. Overall, RSV-induced autophagy and apoptosis in A549 cells are regulated by the NGFR-AMPK-mTOR signaling pathway.Keywords:resveratrol;non-small-cell lung cancer;A549 cell line;autophagy;apoptosis;NGFR-AMPK-mTOR pathway

CAS / MDL: 866405-64-3
研究领域: 肿瘤学 · 分子生物学 · 细胞生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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EXPERIMENTAL ANIMALS · 2023 · IF 2.4

SIRT3 confers protection against acute pulmonary embolism by anti-inflammation, anti-oxidative stress, anti-apoptosis: participation of AMPK/mTOR pathway

Ce XU,Jiahui HAN,Di JIA,Jimin CAI,Jianming YUAN,Xin GE

Increasing studies have suggested that oxidative stress and inflammation play momentous roles in acute pulmonary embolism (APE). Honokiol, a bioactive biphenolic phytochemical substance, is known for its strong anti-oxidative and anti-inflammatory effects and here serves as an activator of sirtuin3 (SIRT3). The purposes of the study are to explore the effects of Honokiol on APE rats, and investigate whether the function of Honokiol is mediated by SIRT3 activation. In this study, the rats received a right femoral vein injection with dextran gel G-50 particles (12 mg/kg) to establish the APE model, which were administrated with Honokiol and/or selective SIRT3 inhibitor 3- (1H-1, 2, 3-triazol-4-yl) pyridine (3-TYP; 5 mg/kg) intraperitoneally. The data showed that SIRT3 activation by Honokiol attenuated the loss in lung function, ameliorated inflammatory response and oxidative damage as well as inhibited apoptosis in lung tissues of the rats with APE, which was reversed by 3-TYP. In addition, we found AMP-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) pathway might be activated by Honokiol but restrained by 3-TYP. These results indicated that Honokiol was capable of suppressing APE’s adverse effects, which was diminished by SIRT3 suppression, implying that activation of SIRT3 might serve as a therapeutic method for APE.

CAS / MDL: 28718-90-3
研究领域: 药理学 · 肺科学 · 分子生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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