1
|
Wang J, Xu Q, Yang Y, Liu J, Kong W, Shi L. An electrochemical sensor founded on heterogeneous MXene & MOF composite for tanshinol sensing. Talanta 2024; 268:125344. [PMID: 37918243 DOI: 10.1016/j.talanta.2023.125344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/04/2023]
Abstract
A new kind of electrochemical sensor based on the MXene & MOF composite-modified carbon cloth was prepared firstly by self-assembly through hydrogen bonds, and then by air-annealing process for detection. The preparation processing introduced chemical bonds between MXene and MOF, which remarkably enhanced the electron transfer ability. Accordingly, combing the unique features of MXene and MOF themselves, the novel electrochemical sensor exhibited exceptional performance to detect tanshinol. Via differential pulse voltammetry, we could obtain a linear tanshinol concentration range of 0.08-8 μM and the limit of detection is 0.034 μM. Furthermore, this developed electrochemical sensor could determine concentrations of tanshinol in real Chinese herbal samples, confirming its practicability and reliability.
Collapse
Affiliation(s)
- Jing Wang
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Qingbin Xu
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Yang Yang
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China
| | - Jinxin Liu
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Weijun Kong
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
| | - Linchun Shi
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| |
Collapse
|
2
|
Waiba S, Maji K, Maiti M, Maji B. Sustainable Synthesis of α-Hydroxycarboxylic Acids by Manganese Catalyzed Acceptorless Dehydrogenative Coupling of Ethylene Glycol and Primary Alcohols. Angew Chem Int Ed Engl 2023; 62:e202218329. [PMID: 36629750 DOI: 10.1002/anie.202218329] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/12/2023]
Abstract
Herein, we report a straightforward synthesis of valuable α-hydroxycarboxylic acid molecules via an acceptorless dehydrogenative coupling of ethylene glycol and primary alcohols. A bench-stable manganese complex catalyzed the reaction, which is scalable, with the product being isolated with high yields and selectivities under mild conditions. The protocol is environmentally benign, producing water and hydrogen gas as the only byproducts. Methanol can also be used as a C1 source for producing the platform molecule lactic acid, with a high turnover of >104 . The methodology was also used to functionalize alcohols derived from natural products and fatty acids. Furthermore, it was applied for synthesizing α-amino acid, α-thiocarboxylic acid, and several drugs and bioactive molecules, including endogenous metabolites, Danshensu, Enalapril, Lisinopril, and Rosmarinic acid. Preliminary mechanistic studies were performed to shed light on the mechanism involved in the reaction.
Collapse
Affiliation(s)
- Satyadeep Waiba
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.,Present address: Department of Chemistry, Jadavpur University, Kolkata, 700032, India
| | - Kakoli Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| | - Mamata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India
| |
Collapse
|
3
|
Xu T, Liu J, Xia Y, Wang Z, Li X, Gao Q. Integrated analysis reveals the participation of IL4I1, ITGB7, and FUT7 in reshaping the TNBC immune microenvironment by targeting glycolysis. Ann Med 2021; 53:916-928. [PMID: 34134578 PMCID: PMC8604452 DOI: 10.1080/07853890.2021.1937694] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 05/26/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The overall response rate of immunotherapy in triple-negative breast cancer (TNBC) remains unsatisfactory. Accumulating evidence indicated that glucose metabolic reprogramming could modulate immunotherapy efficacy. However, transcriptomic evidence remains insufficient. METHODS Genes' relationship with glucose metabolism and TNBC-specific immune was demonstrated by weighted gene co-expression network analysis (WGCNA). The glucose metabolic capability was estimated by standardised uptake value (SUV), an indicator of glucose uptake in 18 F-fluorodeoxyglucose positron emission tomography (FDG-PET), and a reflection of cancer metabolic behaviour. PD-(L)1 expression was used to reflect the efficacy of immunotherapy. Additionally, immune infiltration, survival, and gene coexpression profiles were provided. RESULTS Comprehensive analysis revealing that IL4I1, ITGB7, and FUT7 hold the potential to reinforce immunotherapy by reshaping glucose metabolism in TNBC. These results were verified by functional enrichment analysis, which demonstrated their relationships with immune-related signalling pathways and extracellular microenvironment reprogramming. Their expressions have potent positive correlations with Treg and Macrophage cell infiltration and exhausted T cell markers. Meanwhile, their overexpression also lead to poor prognosis. CONCLUSION IL4I1, ITGB7, and FUT7 may be the hub genes that link glucose metabolism, and cancer-specific immunity. They may be potential targets for enhancing ICB treatment by reprogramming the tumour microenvironment and remodelling tumour metabolism.
Collapse
Affiliation(s)
- Tao Xu
- Key Laboratory of the Ministry of Education, Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Thyroid and Breast Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiahao Liu
- Key Laboratory of the Ministry of Education, Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Xia
- Key Laboratory of the Ministry of Education, Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi Wang
- Key Laboratory of the Ministry of Education, Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xingrui Li
- Department of Thyroid and Breast Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qinglei Gao
- Key Laboratory of the Ministry of Education, Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
4
|
Zhang C, Ren J, Xing Y, Cui M, Li N, Liu P, Wen X, Li M. Fabrication of hollow ZnO-Co3O4 nanocomposite derived from bimetallic-organic frameworks capped with Pd nanoparticles and MWCNTs for highly sensitive detection of tanshinol drug. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110214. [DOI: 10.1016/j.msec.2019.110214] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/05/2019] [Accepted: 09/16/2019] [Indexed: 12/31/2022]
|
5
|
Dimitris D, Ekaterina-Michaela T, Christina K, Ioannis S, Ioanna SK, Aggeliki L, Sophia H, Michael R, Helen S. Melissa officinalis ssp. altissima extracts: A therapeutic approach targeting psoriasis in mice. JOURNAL OF ETHNOPHARMACOLOGY 2020; 246:112208. [PMID: 31476443 DOI: 10.1016/j.jep.2019.112208] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/22/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Melissa officinalis L., commonly known as lemon balm, is one of the most well known edible and medicinal plants of the Lamiaceae family. It is quoted in almost all known medical treatises, from Antiquity up to modern era, such as Corpus Hippocraticum, Dioscorides' De Materia Medica and later on in medieval medical manuscripts and Pharmacopoeias. Actually, it is widely used as herbal medicine for the relief of mild symptoms of mental stress, to aid sleep and for symptomatic treatment of mild gastrointestinal complaints including bloating and flatulence. In Greece, the empirical physicians "vikoyiatroi" recommended the decoction of dry flowers and leaves to treat tracheobronchitis, hysteria, epilepsy, heart arrhythmias, as hypnotic and against skin disorders. AIM OF THE STUDY The present study was conducted to investigate the potential beneficial effects in psoriasis in mice of M. officinalis ssp. altissima and to carry out the chemical analysis in order to reveal its main bioactive secondary metabolites. MATERIALS AND METHODS Non polar and polar extracts of M. officinalis ssp. altissima aerial parts were prepared by using dichloromethane and methanol, successively; in addition a decoction was made upon oral information by local users in Crete, where the plant was collected. All three preparations were chemically analyzed in order to isolate their main constituents. Chemical structures of all isolated compounds were determined by 1D, 2D-NMR and UV-Vis spectroscopy. Furthermore, the antioxidant potential of extracts and decoction was evaluated through DPPH radical scavenging capability. The in vivo in mice anti-psoriatic efficacy of all preparations was estimated through clinical and histopathological assessment and measurements of TEWL and hydration. RESULTS The dichloromethane extract yielded ursolic acid, 2α-hydroxy-ursolic acid, pomolic acid, 3β-stearyloxy-urs-12-ene, oleanolic acid, noropacursane and campesterol; the methanol extract afforded rosmarinic acid and methyl rosmarinate, while from the decoction caffeic acid, 3-(3,4-dihydroxyphenyl)lactic acid and rosmarinic acid were isolated. The psoriasis evaluation, based on PASI score, photodocumentation and histopathological estimation showed that the decoction primarily and the dichloromethane extract secondly could significantly contribute to psoriasis treatment. The decoction seems able to reestablish skin physiology by decreasing dryness and enhancing skin barrier function. Moreover, the decoction showed the best antioxidant activity, while the dichloromethane extract the weakest. CONCLUSIONS The triterpene derivatives of the dichloromethane extract are likely to be responsible for its anti-psoriatic activity. The abundant polyphenolic load of the decoction contributes to its high antioxidant activity and the most effective results against psoriasis. The anti-psoriatic activity of the decoction confirmed the traditional use of this plant as antioxidant, wound healing and skin barrier repair agent.
Collapse
Affiliation(s)
- Dimas Dimitris
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, National & Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece.
| | - Tomou Ekaterina-Michaela
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, National & Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece.
| | - Karamani Christina
- Department of Pharmaceutical Technology, School of Pharmacy, National & Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece.
| | | | - Siakavella K Ioanna
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, University of Patras, 26504, Rio, Greece.
| | - Liakopoulou Aggeliki
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, University of Patras, 26504, Rio, Greece.
| | - Hatziantoniou Sophia
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, University of Patras, 26504, Rio, Greece.
| | - Rallis Michael
- Department of Pharmaceutical Technology, School of Pharmacy, National & Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece.
| | - Skaltsa Helen
- Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, National & Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece.
| |
Collapse
|
6
|
Yang X, Zhang Y, Liu E, Sun L, Zhang Y, Chen C, Wang A, Yan J. The effects of dihydroxyphenyl lactic acid on alleviating blood-brain barrier injury following subarachnoid hemorrhage in rats. Neurosci Lett 2019; 704:189-194. [PMID: 30980845 DOI: 10.1016/j.neulet.2019.04.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 04/08/2019] [Accepted: 04/09/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND In this study, the protective effects of 3,4-dihydroxyphenyl lactic acid (DLA) on blood-brain barrier (BBB) injury following subarachnoid hemorrhage (SAH) has been explored. METHODS Male Sprague-Dawley rats (weight 300-350 g) were used to establish the SAH model using the endovascular perforation method. The animals were randomly divided into four groups: sham (n = 40), SAH (n = 46), SAH + vehicle (n = 44), and SAH + DLA (n = 40) treatment groups. At 1 h after SAH, either DLA (10 mg/kg) or normal saline (vehicle) was administered by femoral vein injection. The effects of DLA on mortality, neurological function, brain water content, and BBB were observed. Additionally, immunohistochemistry and western blot techniques were applied to investigate the mechanism of action of DLA. RESULTS We found that the administration of DLA (10 mg/kg) following SAH could improve neurological functions, reduce brain water content, and maintain BBB integrity. The expression of pro-inflammatory and pro-apoptotic factors such as toll-like receptor 4 (TLR4), NF-κB (p-p65), tumor necrosis factor-α, p-p38 MAPK, p-p53, and caspase-3 were significantly increased after SAH. These same factors were markedly attenuated following treatment with DLA. CONCLUSIONS These findings showed that DLA can alleviate BBB injury following SAH through its anti-inflammatory and anti-apoptotic effects via suppression of TLR4 and its downstream NF-κB and p38 MAPK pathways.
Collapse
Affiliation(s)
- Xiaomei Yang
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Yixuan Zhang
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - E Liu
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Linlin Sun
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Yan Zhang
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Chunhua Chen
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Aibo Wang
- Beijing Key Lab of Magnetic Resonance Imaging Technology, Beijing, 100191, China
| | - Junhao Yan
- Department of Anatomy and Histology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China; Beijing Key Lab of Magnetic Resonance Imaging Technology, Beijing, 100191, China.
| |
Collapse
|
7
|
Wu J, Li X, Zhu G, Zhang Y, He M, Zhang J. The role of Resveratrol-induced mitophagy/autophagy in peritoneal mesothelial cells inflammatory injury via NLRP3 inflammasome activation triggered by mitochondrial ROS. Exp Cell Res 2016; 341:42-53. [PMID: 26825654 DOI: 10.1016/j.yexcr.2016.01.014] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 01/10/2016] [Accepted: 01/23/2016] [Indexed: 02/05/2023]
Abstract
It has been suggested that continuous exposure of peritoneal mesothelial cells (PMCs) to high glucose-containing peritoneal dialysis (PD) solutions may result in peritoneal inflammatory injury and impairment of local peritoneal host defence. Here, we investigated the effect of glucose-based PD solutions on mitochondrial reactive oxygen species (ROS) and nod-like receptor 3 (NLRP3) inflammasome activation in human PMCs (HPMCs). Exposure of HPMCs to high glucose-based PD solutions resulted in ROS production, which can trigger NLRP3 activation, leading to IL-1β secretion. Additionally, resveratrol (RSV) treatment induced mitophagy/autophagy via adenosine monophosphate-activated protein kinase (AMPK) activation. Increased mitochondrial ROS concentrations and IL-1β upregulation were confirmed following inhibition (siRNA against Beclin1 and ATG5 or autophagy inhibitor 3MA), but not induction (RSV), of mitophagy/autophagy. Furthermore, we observed that ATG5 and Beclin1 downregulation sensitised cells to IL-1β release induced by MSU or nigericin, which is an NLRP3 inflammasome activator. RSV treatment attenuated this effect. Taken together, this study may provide a potential therapeutic strategy for peritoneal inflammatory injury via NLRP3 inflammasome activation triggered by mitochondrial ROS.
Collapse
Affiliation(s)
- Jun Wu
- Departments of Nephrology, the Third Hospital of Wuhan, Wuhan University, Wuhan, Hubei 430074, China.
| | - Xiangyou Li
- Departments of Nephrology, the Third Hospital of Wuhan, Wuhan University, Wuhan, Hubei 430074, China
| | - Geli Zhu
- Departments of Nephrology, the Third Hospital of Wuhan, Wuhan University, Wuhan, Hubei 430074, China
| | - Yanxia Zhang
- Departments of Nephrology, the Third Hospital of Wuhan, Wuhan University, Wuhan, Hubei 430074, China
| | - Min He
- Departments of Nephrology, the Affiliated Yue Bei Hospital of Shantou University Medical College, Shaoguan, Guangdong 512026, China
| | - Jian Zhang
- Departments of Nephrology, the Affiliated Yue Bei Hospital of Shantou University Medical College, Shaoguan, Guangdong 512026, China
| |
Collapse
|
8
|
Luo S, Yang Y, Chen J, Zhong Z, Huang H, Zhang J, Cui L. Tanshinol stimulates bone formation and attenuates dexamethasone-induced inhibition of osteogenesis in larval zebrafish. J Orthop Translat 2015; 4:35-45. [PMID: 30035064 PMCID: PMC5986998 DOI: 10.1016/j.jot.2015.07.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 07/07/2015] [Accepted: 07/10/2015] [Indexed: 12/16/2022] Open
Abstract
Background/Objective Tanshinol is the main active component of Salvia miltiorrhiza Bunge, a significant Traditional Chinese Medicine used to treat cardiovascular disease. We have shown that tanshinol exerts an antiosteoporostic effect via the enhancement of bone formation in vivo and in vitro. However, the mechanism remains unclear. Based on the polyphenol group in the structure of tanshinol, we speculate the protective action on skeletal tissue is related to antioxidative capacity. Our in vitro evidence indicated that tanshinol stimulated osteoblastic differentiation by its antioxidaive capacity. In this study, we aim to further confirm the effect of tanshinol on bone formation and the underlying mechanism in zebrafish in vivo. Methods We used a Danio rerio (zebrafish) model, which has a bone formation process similar to humans, and evaluated the relationship between the dose and the effect of tanshinol on bone formation determined using alizarin red S staining or fluorescence intensity analysis in normal and glucocorticoid (GC)-induced inhibition of an osteogenesis model using wild-type zebrafish and cortical bone transgenic zebrafish tg(sp7:egfp). The expression of osteoblast-specific genes and reactive oxygen species (ROS) were tested. Results Our data showed that dexamethasone exerts a series of consequences, including the inhibition of bone formation, decrease of bone mass, downregulation of expression of osteoblast-specific genes (runx2a, ALP, osteocalcin, and sp7), as well as the accumulation of ROS generation and decreased capacity of antioxidants. Tanshinol showed a protective effect on promoting bone formation and bone mass both in wild-type larval zebrafish and transgenic zebrafish. Furthermore, tanshinol attenuated the inhibition of osteogenesis elicited by oxidative stress in the zebrafish exposed to dexamethasone. Conclusion The present findings suggest that tanshinol prevented decreased osteogenesis in GC-treated larval zebrafish via scavenging ROS and stimulated the expression of osteoblast-specific genes. Tanshinol treatment may be developed as a novel therapeutic approach under recent recognised conditions of GC-induced osteoporosis.
Collapse
Affiliation(s)
- Shiying Luo
- Department of Pharmacology, Guangdong Key Laboratory for R&D of Natural Drug, Guangdong Medical University, Zhanjiang, China
| | - Yajun Yang
- Department of Pharmacology, Guangdong Key Laboratory for R&D of Natural Drug, Guangdong Medical University, Zhanjiang, China
| | - Jingfeng Chen
- Department of Pharmacology, Guangdong Key Laboratory for R&D of Natural Drug, Guangdong Medical University, Zhanjiang, China
| | - Zhiguo Zhong
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Hongxin Huang
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Jingjing Zhang
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Liao Cui
- Department of Pharmacology, Guangdong Key Laboratory for R&D of Natural Drug, Guangdong Medical University, Zhanjiang, China
| |
Collapse
|
9
|
Zhang G, Gao S, Li X, Zhang L, Tan H, Xu L, Chen Y, Geng Y, Lin Y, Aertker B, Sun Y. Pharmacological postconditioning with lactic acid and hydrogen rich saline alleviates myocardial reperfusion injury in rats. Sci Rep 2015; 5:9858. [PMID: 25928542 PMCID: PMC4415575 DOI: 10.1038/srep09858] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 03/23/2015] [Indexed: 12/15/2022] Open
Abstract
This study investigated whether pharmacological postconditioning with lactic acid and hydrogen rich saline can provide benefits similar to that of mechanical postconditioning. To our knowledge, this is the first therapeutic study to investigate the co-administration of lactic acid and hydrogen. SD rats were randomly divided into 6 groups: Sham, R/I, M-Post, Lac, Hyd, and Lac + Hyd. The left coronary artery was occluded for 45 min. Blood was withdrawn from the right atrium to measure pH. The rats were sacrificed at different time points to measure mitochondrial absorbance, infarct size, serum markers and apoptotic index. Rats in Lac + Hyd group had similar blood pH and ROS levels when compared to the M-Post group. Additionally, the infarct area was reduced to the same extent in Lac + Hyd and M-Post groups with a similar trends observed for serum markers of myocardial injury and apoptotic index. Although the level of P-ERK in Lac + Hyd group was lower, P-p38/JNK, TNFα, Caspase-8, mitochondrial absorbance and Cyt-c were all similar in Lac + Hyd and M-Post groups. The Lac and Hyd groups were able to partially mimic this protective role. These data suggested that pharmacological postconditioning with lactic acid and hydrogen rich saline nearly replicates the benefits of mechanical postconditioning.
Collapse
Affiliation(s)
- Guoming Zhang
- Department of Cardiology, the General Hospital of Jinan Military Command, Jinan 250031, China
| | - Song Gao
- The Center of Cardiovascular Biology and Atherosclerosis Research, University of Texas Medical School at Houston, Houston, TX 77030, USA
| | - Xiaoyan Li
- Department of Cardiology, the General Hospital of Jinan Military Command, Jinan 250031, China
| | - Lulu Zhang
- The Center of Cardiovascular Biology and Atherosclerosis Research, University of Texas Medical School at Houston, Houston, TX 77030, USA
| | - Hong Tan
- Department of Cardiology, the General Hospital of Jinan Military Command, Jinan 250031, China
| | - Lin Xu
- Department of Cardiology, the General Hospital of Jinan Military Command, Jinan 250031, China
| | - Yaoyu Chen
- Department of Hematology, School of Pharmacology, Nanjing Medical University, Nanjing, 210029, China
| | - Yongjian Geng
- The Center of Cardiovascular Biology and Atherosclerosis Research, University of Texas Medical School at Houston, Houston, TX 77030, USA
| | - Yanliang Lin
- Department of Center Laboratory, Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Benjamin Aertker
- The Center of Cardiovascular Biology and Atherosclerosis Research, University of Texas Medical School at Houston, Houston, TX 77030, USA
| | - Yuanyuan Sun
- Department of Ultrasound, the General Hospital of Jinan Military Command, Jinan 250031, China
| |
Collapse
|
10
|
Zhang HR, Chen JM, Zeng ZY, Que WZ. Knockdown of DEPTOR inhibits cell proliferation and increases chemosensitivity to melphalan in human multiple myeloma RPMI-8226 cells via inhibiting PI3K/AKT activity. J Int Med Res 2013; 41:584-95. [DOI: 10.1177/0300060513480920] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective The present study determined the role of DEP domain containing mTOR-interacting protein (DEPTOR) in the proliferation, apoptosis and chemosensitivity of RPMI-8226 multiple myeloma cells, using small hairpin RNA (shRNA) to knock down DEPTOR gene expression in vitro. Methods DEPTOR mRNA and protein levels in RPMI-8226 cells treated with DEPTOR-specific shRNA were evaluated by reverse transcription–polymerase chain reaction and Western blotting. Expression of apoptosis-associated proteins (including cleaved caspase-3 and cleaved poly-ADP ribose polymerase [PARP]) and activation of the phosphatidylinositol 3-kinase (PI3K)/v-akt murine thymoma viral oncogene homologue 1 (AKT) signalling pathway were detected by Western blotting. Results Transfection of DEPTOR-specific shRNA successfully knocked down DEPTOR gene expression in transfected RPMI-8226 cells. These transfected cells, together with control RPMI-8226 cells, were treated with 20 µmol/l melphalan for 24 h. Knockdown of DEPTOR exacerbated melphalan-induced growth inhibition and apoptosis, increased levels of cleaved caspase-3 and cleaved PARP, and reduced levels of phosphor-AKT. Conclusion Downregulation of DEPTOR inhibited proliferation and increased chemosensitivity to melphalan in human multiple myeloma RPMI-8226 cells via inhibiting the PI3K/AKT pathway.
Collapse
Affiliation(s)
- Hao-Ran Zhang
- Department of Haematology and Rheumatology, The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian Province, China
| | - Jun-Min Chen
- Department of Haematology and Rheumatology, The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian Province, China
| | - Zhi-Yong Zeng
- Department of Haematology and Rheumatology, The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian Province, China
| | - Wen-Zhong Que
- Department of Haematology and Rheumatology, The First Clinical Medical College of Fujian Medical University, Fuzhou, Fujian Province, China
| |
Collapse
|