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Zhao YJ, Shen PF, Fu JH, Yang FR, Chen ZP, Yu RQ. A target-triggered fluorescence-SERS dual-signal nano-system for real-time imaging of intracellular telomerase activity. Talanta 2024; 269:125469. [PMID: 38043337 DOI: 10.1016/j.talanta.2023.125469] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 11/19/2023] [Accepted: 11/21/2023] [Indexed: 12/05/2023]
Abstract
Telomerase (TE) is a promising diagnostic and prognostic biomarker for many cancers. Quantification of TE activity in living cells is of great significance in biomedical and clinical research. Conventional fluorescence-based sensors for quantification of intracellular TE may suffer from problems of fast photobleaching and auto-fluorescence of some endogenous molecules, and hence are liable to produce false negative or positive results. To address this issue, a fluorescence-SERS dual-signal nano-system for real-time imaging of intracellular TE was designed by functionalizing a bimetallic Au@Ag nanostructure with 4-p-mercaptobenzoic acid (internal standard SERS tag) and a DNA hybrid complex consisted of a telomerase primer strand and its partially complimentary strand modified with Rhodamine 6G. The bimetallic Au@Ag nanostructure serves as an excellent SERS-enhancing and fluorescence-quenching substrate. Intracellular TE will trigger the extension of the primer strand and cause the shedding of Rhodamine 6G-modified complimentary strand from the nano-system through intramolecular DNA strand displacement, resulting in the recovery of the fluorescence of Rhodamine 6G and decrease in its SERS signal. Both the fluorescence of R6G and the ratio between the SERS signals of 4-p-mercaptobenzoic acid and Rhodamine 6G can be used for in situ imaging of intracellular TE. Experimental results showed that the proposed nano-system was featured with low background, excellent cell internalization efficiency, good biocompatibility, high sensitivity, good selectivity, and robustness to false positive results. It can be used to distinguish cancer cells from normal ones, identify different types of cancer cells, as well as perform absolute quantification of intracellular TE, which endows it with great potential in clinical diagnosis, target therapy and prognosis of cancer patients.
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Affiliation(s)
- Yu-Jie Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, PR China
| | - Ping-Fan Shen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, PR China
| | - Jing-Hao Fu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, PR China
| | - Feng-Rui Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, PR China
| | - Zeng-Ping Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, PR China.
| | - Ru-Qin Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, PR China
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Tang WQ, Yang FR, Chen KM, Yang H, Liu Y, Dou B. CircZNF609 Aggravated Myocardial Ischemia Reperfusion Injury via Mediation of miR-214-3p/PTGS2 Axis. Korean Circ J 2022; 52:680-696. [PMID: 36097836 PMCID: PMC9470495 DOI: 10.4070/kcj.2021.0252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 03/06/2022] [Accepted: 05/08/2022] [Indexed: 12/28/2022] Open
Affiliation(s)
- Wen-Qiang Tang
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, Hunan Province, P.R. China
| | - Feng-Rui Yang
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, Hunan Province, P.R. China
| | - Ke-Min Chen
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, Hunan Province, P.R. China
| | - Huan Yang
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, Hunan Province, P.R. China
| | - Yu Liu
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, Hunan Province, P.R. China
| | - Bo Dou
- Department of Anesthesiology, The First Affiliated Hospital of University of South China, Hengyang, Hunan Province, P.R. China
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Yang FR, Chen J, Yi H, Peng LY, Hu XL, Guo QL. MicroRNA-7a ameliorates neuropathic pain in a rat model of spinal nerve ligation via the neurofilament light polypeptide-dependent signal transducer and activator of transcription signaling pathway. Mol Pain 2019; 15:1744806919842464. [PMID: 30987515 PMCID: PMC6537231 DOI: 10.1177/1744806919842464] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Neuropathic pain is a type of chronic pain induced by either central or
peripheral nerve injury. MicroRNAs have been recently linked to many diseases,
including neuropathic pain. However, the role of miR-7a in neuropathic pain
still remains elusive. Thus, we aim to investigate the effects of miR-7a on
neuropathic pain based on the spinal nerve ligation rat model. After
establishment of spinal nerve ligation rat models, rats were infected with
adeno-associated virus-neurofilament light polypeptide, adeno-associated
virus-miR-7a or treated with metformin. The paw withdrawal threshold and paw
withdrawal latency were assessed afterward, and the expression of miR-7a and
neurofilament light polypeptide as well as their interaction was determined.
Subsequently, miR-7a was overexpressed or silenced in dorsal root ganglion cells
to investigate the role of miR-7a in neuropathic pain. Furthermore, the
regulatory effect of neurofilament light polypeptide on neuropathic pain was
detected using plasmid overexpressing neurofilament light polypeptide. Spinal
nerve ligation rat model exhibited upregulation of neurofilament light
polypeptide but downregulation of miR-7a. In addition, neurofilament light
polypeptide accumulation or miR-7a inhibition decreased paw withdrawal threshold
and paw withdrawal latency. Then, neurofilament light polypeptide accumulation
or miR-7a inhibition was observed to increase the phosphorylation level of
signal transducer and activator of transcription. miR-7a was found to directly
target neurofilament light polypeptide and downregulate neurofilament light
polypeptide. In addition, inhibiting the signal transducer and activator of
transcription signaling pathway was also revealed to increase paw withdrawal
threshold and paw withdrawal latency. Collectively, our study demonstrated that
miR-7a ameliorated neuropathic pain via blocking the signal transducer and
activator of transcription signaling pathway by repressing neurofilament light
polypeptide. These findings, if taken further, can be of important clinical
significance in treating patients with neuropathic pain.
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Affiliation(s)
- Feng-Rui Yang
- 1 Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, P.R. China.,2 Department of Anesthesiology, the First Affiliated Hospital of University of South China, Hengyang, P.R. China
| | - Ji Chen
- 3 Department of Endocrinology, the First Affiliated Hospital of University of South China, Hengyang, P.R. China
| | - Han Yi
- 2 Department of Anesthesiology, the First Affiliated Hospital of University of South China, Hengyang, P.R. China
| | - Liang-Yu Peng
- 2 Department of Anesthesiology, the First Affiliated Hospital of University of South China, Hengyang, P.R. China
| | - Xiao-Ling Hu
- 2 Department of Anesthesiology, the First Affiliated Hospital of University of South China, Hengyang, P.R. China
| | - Qu-Lian Guo
- 1 Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, P.R. China
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Yang FR, Li Y, Zhang XH, Wang M, Guo HR, Ruan WJ. Anticancer effect and mechanism of a Se-modified porphyrin Au(III) complex. Bioorg Med Chem Lett 2015; 25:3592-6. [PMID: 26152428 DOI: 10.1016/j.bmcl.2015.06.075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/17/2015] [Accepted: 06/20/2015] [Indexed: 10/23/2022]
Abstract
Au, Se and porphyrin are widely used components in the design of anticancer drugs, but their combination has never been referred to. In this work, a Se-modified porphyrin Au(III) complex, [AuTPP-Se]Cl, was designed and synthesized as a potential anticancer agent. This compound exhibits remarkable antiproliferative activity on all the six tested cancer cells. Its potency on HepG2 is even ten times higher than that of CDDP. The synergistic action among Au, Se and porphyrin components was validated. Mechanism study showed that both the induction of mitochondria-dependent apoptosis and the arrest of cell cycle contribute to the anticancer activity of [AuTPP-Se]Cl.
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Affiliation(s)
- Feng-Rui Yang
- Department of Pharmacology, Tianjin Medical University, No. 22 of Qixiangtai Road, Tianjin 300070, China
| | - Yue Li
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China
| | - Xiao-Hong Zhang
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China
| | - Meng Wang
- Department of Pharmacology, Tianjin Medical University, No. 22 of Qixiangtai Road, Tianjin 300070, China
| | - Hong-Rui Guo
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China
| | - Wen-Juan Ruan
- Department of Chemistry, Nankai University, No. 94 of Weijin Road, Tianjin 300071, China.
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Yang FR, Fang BW, Lou JS. Effects of Fufang Biejia Ruangan Pills on hepatic fibrosis in vivo and in vitro. World J Gastroenterol 2013; 19:5326-5333. [PMID: 23983437 PMCID: PMC3752568 DOI: 10.3748/wjg.v19.i32.5326] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/02/2013] [Accepted: 07/19/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the protective effect and the relevant mechanisms of Fufang Biejia Ruangan Pills (FFBJRGP) on hepatic fibrosis in vivo and in vitro.
METHODS: Hepatic fibrosis was induced by carbon tetrachloride composite factors. Adult Wistar rats were randomly divided into four groups: normal control group; hepatic fibrosis model group; FFBJRGP-treated group at a daily dose of 0.55 g/kg; and colchicine-treated group at a daily dose of 0.1 g/kg. The effects of FFBJRGP on liver function, serum levels of hyaluronic acid (HA), type IV collagen (CIV), type III procollagen (PC III), laminin (LN), histopathology, and expression of transforming growth factor (TGF-β1) and Smad3 in hepatic fibrosis were evaluated in vivo. The effects of FFBJRGP on survival rate, hydroxyproline content and cell cycle distribution were further detected in vitro.
RESULTS: Compared with the hepatic fibrosis model group, rats treated with FFBJRGP showed a reduction in hepatic collagen deposition and improvement in hepatic lesions. Compared with those of the model group, the activities of alanine aminotransferase (62.0 ± 23.7 U/L) and aspartate aminotransferase (98.8 ± 40.0 U/L) in the FFBJRGP-treated group were decreased (50.02 ± 3.7 U/L and 57.2 ± 30.0 U/L, respectively, P < 0.01). Compared with those in the model group, the levels of PCIII (35.73 ± 17.90 μg/mL), HA (563.82 ± 335.54 ng/mL), LN (89.57 ± 7.59 ng/mL) and CIV (29.20 ± 6.17 ng/mL) were decreased to 30.18 ± 9.41, 456.18 ± 410.83, 85.46 ± 7.51 and 28.02 ± 9.45 ng/mL, respectively. Reverse-transcriptase polymerase chain reaction and Western blotting also revealed that expression of TGF-β1 and Smad3 were down-regulated in vivo. Cell proliferation was inhibited, the level of hydroxyproline was decreased compared with the control group (P < 0.01), and the cell cycle was redistributed when exposed to FFBJRGP in vitro.
CONCLUSION: FFBJRGP inhibits hepatic fibrosis in vivo and in vitro, which is probably associated with downregulation of fibrogenic signal transduction of the TGF-β-Smad pathway.
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Yan T, Yang FR, Meng L. Combination therapy of atorvastatin and probucol on ischemic stroke in clinic. Lab Invest 2012. [PMCID: PMC3480056 DOI: 10.1186/1479-5876-10-s2-a61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Yang FR, Wu BS, Lai GH, Wang Q, Yang LQ, He MW, Ni JX. Assessment of Consecutive Neurolytic Celiac Plexus Block (NCPB) Technique Outcomes in the Management of Refractory Visceral Cancer Pain. Pain Med 2012; 13:518-21. [DOI: 10.1111/j.1526-4637.2012.01332.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Yang FR, Fang BW, Lou JS. Effects of Haobie Yangyin Ruanjian decoction on hepatic fibrosis induced by carbon tetrachloride in rats. World J Gastroenterol 2010; 16:1458-64. [PMID: 20333785 PMCID: PMC2846250 DOI: 10.3748/wjg.v16.i12.1458] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Revised: 01/18/2010] [Accepted: 01/25/2010] [Indexed: 02/06/2023] Open
Abstract
AIM To explore the anti-fibrotic effect of Haobie Yangyin Ruanjian decoction (HYRD) on CCl(4)-induced hepatic fibrosis in rats and its modulation on the transforming growth factor (TGF) beta-Smad signaling pathway. METHODS Fifty-six healthy Wistar rats were randomly divided into five groups: normal control group (n = 6), CCl(4)-induced hepatic fibrosis group (n = 14) and three treatment groups (the treated rats received HYRD via oral administration at daily dosages of 8.2, 2.5 and 0.82 g/kg, respectively) of HYRD (n = 12, respectively). Experimental hepatic fibrosis was induced by subcutaneous injection of carbon tetrachloride solution (CCl(4) dissolved in peanut oil, 4:6, V/V) with 0.5 mL/100 g body weight for the first time, and then 0.3 mL/100 g body weight twice a week for 8 wk. In the former 2 wk, rats were raised by feedstuff I (80% corn meal, 20% lard, 0.5% cholesterol). After 2 wk, they were raised by feedstuff II (corn meal and 0.5% cholesterol). Except for the control group, 30% alcohol solution was given orally to each rat every other day from the beginning, 1 mL for each rat. Liver function parameters and hepatic hydroxyproline content were detected by chromatometry. Serum levels of hyaluronic acid (HA), type IV collagen (CIV), type III precollagen (PCIII) and laminin (LN) were assayed with radioimmunoassay. Deposition of collagen was observed with hematoxylin-eosin staining and collagen staining. Gene expression of TGFbeta1 and Smad3 were detected with real-time reverse transcriptase-polymerase chain reaction and Western blotting, respectively. RESULTS The serum levels of alanine transaminase and aspartate transaminase were increased in the model group compared with the control group (P < 0.01), and they were decreased in the three treatment groups compared with the model group. The serum levels of total protein and albumin were decreased in the model group and increased in the three treatment groups. The hepatic hydroxyproline content and serum levels of PCIII, HA, LN and CIV were markedly increased in the model group compared with the control group, and decreased in the treatment groups. The gene expression of TGFbeta1 and Smad3 was enhanced in the model group compared with the control group, and HYRD could down regulate their expression. CONCLUSION HYRD can inhibit hepatic fibrosis induced by CCl(4) in rats, which is probably associated with its down-regulation on fibrogenic signal transduction of TGFbeta-Smad pathway.
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Tian SF, Ruan WQ, Wang XP, Zhang LL, Yang FR, Zong F, Ruan L. [Chromosome aberration and carcinogenicity of CHO dhfr- cells transformed by plasmid containing S+ and Pre S1 of fusion gene of hepatitis B virus]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2001; 15:208-11. [PMID: 11986685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE To investigate the chromosome aberrations and carcinogenicity of CHO-dhfr- cell induced by integration of plasmid containing S+ and Pre S1 fusion gene of hepatitis B surface antigen (HBsAg). METHODS The plasmid pCHBSS1G was constructed with S+ Pre S1 of HBsAg. CHO-dhfr- cells were transformed with this recombinant plasmid DNA and CHO cells lines with integrated DNA were cloned and named GdSS118. The GdSS1 18 cell lines secreting the S+ Pre S1 fusion protein of HBsAg at high level were developed by screening in increased concentration of MTX and MSX in cultured media. To make sample of cells chromosome, the cells integrated DNA were subcutaneously injected into nude mouse. RESULTS The CHO-dhfr- cell lines integrated with S and Pre S1 fusion protein of HBsAg were developed and named GdSS1-18 cell lines. The frequencies and type of chromosome aberrations of the GdSS1-18 cell lines with different passage generations were 11%, 56% and 29%, respectively, while that of the control CHO-dhfr- cell lines was 6%. There was no change in the mode of chromosomes, both cell lines having 20 chromosome s. Both cell lines were non-oncogenic in nude mouse. CONCLUSIONS The chromosome aberration of CHO-dhfr- cells with integrated DNA were obviously higher than that of the original CHO-dhfr- cells without integrated DNA. Both cell lines were non oncogenic in nude mouse.
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Affiliation(s)
- S F Tian
- Institute of Virology, Chinese Academy of Preventive Medicine, Beijing 100052, China
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Li FS, Yang FR, Song JC, Gao H, Tang JQ, Zou CH, Hu BN, Wen SR, Qiu FX. Etiologic and serologic investigations of the 1980 epidemic of dengue fever on Hainan Island, China. Am J Trop Med Hyg 1986; 35:1051-4. [PMID: 3766851 DOI: 10.4269/ajtmh.1986.35.1051] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Virologic and seroepidemiologic studies were carried out during an epidemic of dengue fever on Hainan Island in 1980. Dengue 3 virus was isolated from 46 of 77 acute phase sera and from 1 of 10 pools of adult Aedes aegypti. Dengue 1 virus virus was isolated from a single acute phase serum. Seroepidemiologic investigations showed that 74% of healthy individuals in the epidemic area had antibody to dengue virus compared to 54% in an area where epidemic dengue had occurred in 1978, and less than or equal to 8% in nonepidemic areas. There were no significant differences in antibody prevalence for different sex and age groups.
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