1
|
Saeki K, Ha D, Chang G, Mori H, Yoshitake R, Wu X, Wang J, Wang YZ, Wang X, Tzeng T, Shim HJ, Neuhausen SL, Chen S. Perimenopausal and Menopausal Mammary Glands In A 4-Vinylcyclohexene Diepoxide Mouse Model. J Mammary Gland Biol Neoplasia 2024; 29:15. [PMID: 39017946 PMCID: PMC11254995 DOI: 10.1007/s10911-024-09569-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 07/05/2024] [Indexed: 07/18/2024] Open
Abstract
As both perimenopausal and menopausal periods are recognized critical windows of susceptibility for breast carcinogenesis, development of a physiologically relevant model has been warranted. The traditional ovariectomy model causes instant removal of the entire hormonal repertoire produced by the ovary, which does not accurately approximate human natural menopause with gradual transition. Here, we characterized the mammary glands of 4-vinylcyclohexene diepoxide (VCD)-treated animals at different time points, revealing that the model can provide the mammary glands with both perimenopausal and menopausal states. The perimenopausal gland showed moderate regression in ductal structure with no responsiveness to external hormones, while the menopausal gland showed severe regression with hypersensitivity to hormones. Leveraging the findings on the VCD model, effects of a major endocrine disruptor (polybrominated diphenyl ethers, PBDEs) on the mammary gland were examined during and after menopausal transition, with the two exposure modes; low-dose, chronic (environmental) and high-dose, subacute (experimental). All conditions of PBDE exposure did not augment or compromise the macroscopic ductal reorganization resulting from menopausal transition and/or hormonal treatments. Single-cell RNA sequencing revealed that the experimental PBDE exposure during the post-menopausal period caused specific transcriptomic changes in the non-epithelial compartment such as Errfi1 upregulation in fibroblasts. The environmental PBDE exposure resulted in similar transcriptomic changes to a lesser extent. In summary, the VCD mouse model provides both perimenopausal and menopausal windows of susceptibility for the breast cancer research community. PBDEs, including all tested models, may affect the post-menopausal gland including impacts on the non-epithelial compartments.
Collapse
Affiliation(s)
- Kohei Saeki
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
- Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
| | - Desiree Ha
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Gregory Chang
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Hitomi Mori
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Ryohei Yoshitake
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Xiwei Wu
- Integrative Genomics Core, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Jinhui Wang
- Integrative Genomics Core, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Yuan-Zhong Wang
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Xiaoqiang Wang
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Tony Tzeng
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Hyun Jeong Shim
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA
| | - Susan L Neuhausen
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Shiuan Chen
- Department of Cancer Biology and Molecular Medicine, Beckman Research Institute of City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA.
| |
Collapse
|
2
|
Zhao H, Mao H. ERRFI1 exacerbates hepatic ischemia reperfusion injury by promoting hepatocyte apoptosis and ferroptosis in a GRB2-dependent manner. Mol Med 2024; 30:82. [PMID: 38862918 PMCID: PMC11167874 DOI: 10.1186/s10020-024-00837-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 05/14/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND Programmed cell death is an important mechanism for the development of hepatic ischemia and reperfusion (IR) injury, and multiple novel forms of programmed cell death are involved in the pathological process of hepatic IR. ERRFI1 is involved in the regulation of cell apoptosis in myocardial IR. However, the function of ERRFI1 in hepatic IR injury and its modulation of programmed cell death remain largely unknown. METHODS Here, we performed functional and molecular mechanism studies in hepatocyte-specific knockout mice and ERRFI1-silenced hepatocytes to investigate the significance of ERRFI1 in hepatic IR injury. The histological severity of livers, enzyme activities, hepatocyte apoptosis and ferroptosis were determined. RESULTS ERRFI1 expression increased in liver tissues from mice with IR injury and hepatocytes under oxygen-glucose deprivation/reoxygenation (OGD/R) conditions. Hepatocyte-specific ERRFI1 knockout alleviated IR-induced liver injury in mice by reducing cell apoptosis and ferroptosis. ERRFI1 knockdown reduced apoptotic and ferroptotic hepatocytes induced by OGD/R. Mechanistically, ERRFI1 interacted with GRB2 to maintain its stability by hindering its proteasomal degradation. Overexpression of GRB2 abrogated the effects of ERRFI1 silencing on hepatocyte apoptosis and ferroptosis. CONCLUSIONS Our results revealed that the ERRFI1-GRB2 interaction and GRB2 stability are essential for ERRFI1-regulated hepatic IR injury, indicating that inhibition of ERRFI1 or blockade of the ERRFI1-GRB2 interaction may be potential therapeutic strategies in response to hepatic IR injury.
Collapse
Affiliation(s)
- Hang Zhao
- Department of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, 121000, Liaoning, China
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, No. 2, Section 5, Renmin Street Guta District, Jinzhou, 121000, Liaoning, China
| | - Huizi Mao
- Department of General Surgery, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, 121000, Liaoning, China.
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, No. 2, Section 5, Renmin Street Guta District, Jinzhou, 121000, Liaoning, China.
| |
Collapse
|
3
|
Pinto BF, Lopes PH, Trufen CEM, Ching ATC, De Azevedo IDLMJ, Nishiyama MY, Pohl PC, Tambourgi DV. Role of ErbB and IL-1 signaling pathways in the dermonecrotic lesion induced by Loxosceles sphingomyelinases D. Arch Toxicol 2023; 97:3285-3301. [PMID: 37707622 DOI: 10.1007/s00204-023-03602-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 08/30/2023] [Indexed: 09/15/2023]
Abstract
Sphingomyelinase D (SMase D), the main toxic component of Loxosceles venom, has a well-documented role on dermonecrotic lesion triggered by envenomation with these species; however, the intracellular mechanisms involved in this event are still poorly known. Through differential transcriptomics of human keratinocytes treated with L. laeta or L. intermedia SMases D, we identified 323 DEGs, common to both treatments, as well as upregulation of molecules involved in the IL-1 and ErbB signaling. Since these pathways are related to inflammation and wound healing, respectively, we investigated the relative expression of some molecules related to these pathways by RT-qPCR and observed different expression profiles over time. Although, after 24 h of treatment, both SMases D induced similar modulation of these pathways in keratinocytes, L. intermedia SMase D induced earlier modulation compared to L. laeta SMase D treatment. Positive expression correlations of the molecules involved in the IL-1 signaling were also observed after SMases D treatment, confirming their inflammatory action. In addition, we detected higher relative expression of the inhibitor of the ErbB signaling pathway, ERRFI1, and positive correlations between this molecule and pro-inflammatory mediators after SMases D treatment. Thus, herein, we describe the cell pathways related to the exacerbation of inflammation and to the failure of the wound healing, highlighting the contribution of the IL-1 signaling pathway and the ERRFI1 for the development of cutaneous loxoscelism.
Collapse
|
4
|
Ji W, Byun WS, Lu W, Zhu X, Donovan KA, Dwyer BG, Che J, Yuan L, Abulaiti X, Corsello SM, Fischer ES, Zhang T, Gray NS. Proteomics-Based Discovery of First-in-Class Chemical Probes for Programmed Cell Death Protein 2 (PDCD2). Angew Chem Int Ed Engl 2023; 62:e202308292. [PMID: 37658265 PMCID: PMC10592021 DOI: 10.1002/anie.202308292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/03/2023]
Abstract
Chemical probes are essential tools for understanding biological systems and for credentialing potential biomedical targets. Programmed cell death 2 (PDCD2) is a member of the B-cell lymphoma 2 (Bcl-2) family of proteins, which are critical regulators of apoptosis. Here we report the discovery and characterization of 10 e, a first-in-class small molecule degrader of PDCD2. We discovered this PDCD2 degrader by serendipity using a chemical proteomics approach, in contrast to the conventional approach for making bivalent degraders starting from a known binding ligand targeting the protein of interest. Using 10 e as a pharmacological probe, we demonstrate that PDCD2 functions as a critical regulator of cell growth by modulating the progression of the cell cycle in T lymphoblasts. Our work provides a useful pharmacological probe for investigating PDCD2 function and highlights the use of chemical proteomics to discover selective small molecule degraders of unanticipated targets.
Collapse
Affiliation(s)
- Wenzhi Ji
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Woong Sub Byun
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Wenchao Lu
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
- Lingang Laboratory, Shanghai, 20031, China
| | - Xijun Zhu
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Katherine A Donovan
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA
| | - Brendan G Dwyer
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Jianwei Che
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA
| | - Linjie Yuan
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Xianmixinuer Abulaiti
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Steven M Corsello
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Eric S Fischer
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, 02215, USA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA
| | - Tinghu Zhang
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| | - Nathanael S Gray
- Department of Chemical and Systems Biology, Chem-H and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, CA, 94305, USA
| |
Collapse
|
5
|
Liu B, Fang L, Mo P, Chen C, Ji Y, Pang L, Chen H, Deng Y, Ou W, Liu SM. Apoe-knockout induces strong vascular oxidative stress and significant changes in the gene expression profile related to the pathways implicated in redox, inflammation, and endothelial function. Cell Signal 2023; 108:110696. [PMID: 37409402 DOI: 10.1016/j.cellsig.2023.110696] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/30/2023] [Accepted: 04/28/2023] [Indexed: 07/07/2023]
Abstract
Apolipoprotein E (APOE) was recognized as a key regulator of lipid metabolism, which prompted the Apoe-knockout (Apoe-/-) mouse to be the most widely used atherosclerotic model. However, with more and more important physiological roles of APOE being revealed, it is necessary to reacquaint its comprehensive function in the aorta. In this study, we aimed to reveal how Apoe-knockout impacts the gene pathways and phenotypes in the aorta of mice. We performed transcriptome sequencing to acquire the gene expression profile (GEP) for C57BL/6J and Apoe-/- mouse aorta, and used enrichment analysis to reveal the signal pathways enriched for differentially expressed genes (DEGs). In addition, we used immunofluorescence and ELISA to detect the phenotypic differences of vascular tissues and plasma in the two-group mice. Apoe-knockout resulted in significant changes in the expression of 538 genes, among which about 75% were up-regulated and 134 genes were altered more than twice. In addition to the lipid metabolism pathways, DEGs were also mainly enriched in the pathways implicated in endothelial cell proliferation, migration of epithelial cells, immune regulatory, and redox. GSEA shows that the up-regulated genes are mainly enriched in 'immune regulation pathways' and 'signal regulation' pathways, while the down-regulated genes are enriched in lipid metabolism pathways, 'regulation_of_nitric_oxide_synthase_activity' and the pathways involved in redox homeostasis, including 'monooxygenase regulation', 'peroxisomes' and 'oxygen binding'. A significant increase of reactive oxygen species and a remarkable reduction of GSH/GSSG ratio were respectively observed in the vascular tissues and plasma of Apoe-/- mice. In addition, endothelin-1 significantly increased in the vascular tissue and the plasma of Apoe-/- mice. Taken together, our results suggest that besides functioning in lipid metabolism, APOE may be an important signal regulator that mediates the expression of the genes related to the pathways involved in redox, inflammation, and endothelial function. Apoe-knockout-induced strong vascular oxidative stress is also the key factor contributing to atherosclerosis.
Collapse
Affiliation(s)
- Benrong Liu
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China.
| | - Lei Fang
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Pei Mo
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Changnong Chen
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Yang Ji
- Department of Emergency, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, China
| | - Lihua Pang
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Huanzhen Chen
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Yichao Deng
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Wenchao Ou
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China
| | - Shi-Ming Liu
- Department of Cardiology, Guangzhou Institute of Cardiovascular Disease, Guangdong Key Laboratory of Vascular Diseases, State Key Laboratory of Respiratory Disease, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, China.
| |
Collapse
|
6
|
Xu J, Wu X, Chen J, Cheng Y, Zhang X. A TP53-associated metabolic gene signature for the prediction of overall survival and therapeutic responses in hepatocellular carcinoma. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2023. [DOI: 10.1016/j.jrras.2023.100552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
|
7
|
Shetty KS, Jose A, Bani M, Vinod PK. Network diffusion-based approach for survival prediction and identification of biomarkers using multi-omics data of papillary renal cell carcinoma. Mol Genet Genomics 2023; 298:871-882. [PMID: 37093328 DOI: 10.1007/s00438-023-02022-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 04/12/2023] [Indexed: 04/25/2023]
Abstract
Identification of cancer subtypes based on molecular knowledge is crucial for improving the patient diagnosis, prognosis, and treatment. In this work, we integrated copy number variations (CNVs) and transcriptomic data of Kidney Papillary Renal Cell Carcinoma (KIRP) using a network diffusion strategy to stratify cancers into clinically and biologically relevant subtypes. We constructed GeneNet, a KIRP specific gene expression network from RNA-seq data. The copy number variation data was projected onto GeneNet and propagated on the network for clustering. We identified robust subtypes that are biologically informative and significantly associated with patient survival, tumor stage and clinical subtypes of KIRP. We performed a Singular Value Decomposition (SVD) analysis of KIRP subtypes, which revealed the genes/silent players related to poor survival. A differential gene expression analysis between subtypes showed that genes related to immune, extracellular matrix organization, and genomic instability are upregulated in the poor survival group. Overall, the network-based approach revealed the molecular subtypes of KIRP and captured the relationship between gene expression and CNVs. This framework can be further expanded to integrate other omics data.
Collapse
Affiliation(s)
- Keerthi S Shetty
- Center for Computational Natural Sciences and Bioinformatics, IIIT Hyderabad, Hyderabad, 500032, India
| | - Aswin Jose
- Center for Computational Natural Sciences and Bioinformatics, IIIT Hyderabad, Hyderabad, 500032, India
| | - Mihir Bani
- Center for Computational Natural Sciences and Bioinformatics, IIIT Hyderabad, Hyderabad, 500032, India
| | - P K Vinod
- Center for Computational Natural Sciences and Bioinformatics, IIIT Hyderabad, Hyderabad, 500032, India.
| |
Collapse
|
8
|
Biodegradable silica nanocapsules enable efficient nuclear-targeted delivery of native proteins for cancer therapy. Biomaterials 2023; 294:122000. [PMID: 36640541 DOI: 10.1016/j.biomaterials.2023.122000] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/05/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Cell nucleus is the desired subcellular organelle of many therapeutic drugs. Although numerous nanomaterial-based methods have been developed which could facilitate nuclear-targeted delivery of small-molecule drugs, few are known to be capable of delivering exogenous native proteins. Herein, we report a convenient and highly robust approach for effective nuclear-targeted delivery of native proteins/antibodies by using biodegradable silica nanocapsules (BSNPs) that were surface-modified with different nuclear localization signals (NLS) peptides. We found that, upon gaining entry to mammalian cells via endocytosis, such nanocapsules (protein@BSNP-NLS) could effectively escape from endolysosomal vesicles with the assistance of an endosomolytic peptide (i.e., L17E), accumulate in cell nuclei and release the encapsulated protein cargo with biological activities. Cloaked with HeLa cell membrane, DNase@BSNP-NLS/L17E-M (with L17E encapsulated) homologously delivered functional proteins to cancer cell nuclei in tumor-xenografted mice. In vitro and in vivo anti-tumor properties, such as long blood circulation time and effective tumor growth inhibition, indicate that the nuclear-targeted cell-membrane-cloaked BSNPs (DNase@BSNP-NLS/L17E-M) platform is a promising therapeutic approach to nuclear related diseases.
Collapse
|
9
|
Zheng Y, Wang G, Li R, Geng H, Lei X, Chen L, Wu S, Yao J, Deng L. Promotion of intestinal epithelial cell apoptosis by enterotoxigenic Escherichia coli via PKA-mediated inhibition of mTORC1 activation. Microbes Infect 2023; 25:105099. [PMID: 36642296 DOI: 10.1016/j.micinf.2023.105099] [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: 10/20/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 01/13/2023]
Abstract
Enterotoxigenic Escherichia coli (ETEC) is the main causative pathogen of diarrhea. It causes acute watery diarrhea that leads to rapid dehydration and prostration within hours. ETEC is still an important cause of neonatal and post-weaning diarrhea in pigs. However, the mechanism underlying ETEC-induced diarrhea is not yet clear. In this study, we investigated these mechanisms and found that the mTORC1 pathway plays a role in the host response to ETEC F4 infection. Specifically, we found that ETEC F4 treatment significantly repressed mTORC1 activity as well as cell proliferation, promoted apoptosis and regulated the expression of diarrhea-related genes via the promotion of PKA-mediated phosphorylation of SIN1, which plays a critical role in the assembly of mTORC2. These findings indicate that PKA is a checkpoint for ETEC-induced diarrhea. In terms of potential therapeutic strategies, we found that ZnSO4 dramatically rescued ETEC F4-induced the inhibition of mTORC1 activity and cell viability and the induction of apoptosis and alterations in the expression of diarrhea-related genes. Thus, the present findings demonstrate that ETEC F4 influences mTORC1 activation by inhibiting the assembly of mTORC2 through PKA-mediated phosphorylation of SIN1. Further, supplementation with ZnSO4 is an effective strategy for blocking the effect of ETEC F4 on mTORC1 activation, and it may have potential clinical applications in the treatment of ETEC F4-induced diarrhea.
Collapse
Affiliation(s)
- Yining Zheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Guoyan Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Rongnuo Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Huijun Geng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinjian Lei
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Lei Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shengru Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Junhu Yao
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Lu Deng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| |
Collapse
|
10
|
Qi YS, Xiao MY, Xie P, Xie JB, Guo M, Li FF, Piao XL. Comprehensive serum metabolomics and network analysis to reveal the mechanism of gypenosides in treating lung cancer and enhancing the pharmacological effects of cisplatin. Front Pharmacol 2022; 13:1070948. [PMID: 36532716 PMCID: PMC9751056 DOI: 10.3389/fphar.2022.1070948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 11/21/2022] [Indexed: 10/23/2023] Open
Abstract
Gypenosides (GYP) exerted anticancer activity against various cancers. However, the mechanism of GYP against lung cancer (LC) in vivo remains unclear. This study aims to reveal the potential mechanism of GYP against LC and enhancing cisplatin efficacy using a comprehensive analysis of metabolomics, network analysis. Pharmacodynamic results showed that GYP inhibited tumor growth, reduced tumor volume and tumor weight, and alleviated pathological symptoms in Lewis tumor-bearing mice, and GYP could enhance the anti-LC effects of cisplatin. Using serum metabolomics methods, 53 metabolites were found to be significantly altered in the model group, and the levels of 23 biomarkers were significantly restored after GYP treatment. GYP-related metabolic pathways involved six pathways, including alpha-linolenic acid metabolism, glutathione metabolism, sphingolipid metabolism, glycerophospholipid metabolism, tryptophan metabolism, and primary bile acid biosynthesis. 57 genes associated with differential metabolites of GYP recovery and 7 genes of 11 saponins of GYP against LC were screened by network analysis, the STRING database was used to find the association between 57 genes and 7 genes, and a compound-intersection gene-metabolite related gene-metabolite-pathway network was constructed, and STAT3, MAPK14, EGFR and TYMS might be the crucial targets of GYP against LC. Western blot results showed that GYP restored the levels of STA3, MAPK14, EGFR, and TYMS in the model group, and GYP also restored the levels of STAT3 and MAPK14 in the cisplatin group, indicating that GYP might exert anti-LC effects and enhance the pharmacological effects of cisplatin through MAPK14/STAT3 signaling pathway. Our method revealed the effect and mechanism of GYP on LC and the pharmacological effects of GYP-enhanced chemotherapeutic agent cisplatin, which provided some reference for the development of anti-cancer drugs.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Xiang-Lan Piao
- School of Pharmacy, Minzu University of China, Beijing, China
| |
Collapse
|
11
|
Jiang P, Xue W, Xi C, Zhuang L, Yuan Z, Liu Z, Sun T, Xu X, Tan Y, Ding W. A new acidic microenvironment related lncRNA signature predicts the prognosis of liver cancer patients. Front Oncol 2022; 12:1016721. [PMID: 36387100 PMCID: PMC9660327 DOI: 10.3389/fonc.2022.1016721] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/18/2022] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND The acidic microenvironment (AME), like hypoxia, inflammation, or immunoreaction, is a hallmark of the tumor microenvironment (TME). This work aimed to develop a prediction signature dependent on AME-associated lncRNAs in order to predict the prognosis of LC individuals. METHODS We downloaded RNA-seq information and the corresponding clinical and predictive data from The Cancer Genome Atlas (TCGA) dataset and conducted univariate and multivariate Cox regression analyses to identify AME-associated lncRNAs for the construction of a prediction signature The Kaplan-Meier technique was utilized to determine the overall survival (OS) rate of the high (H)-risk and low (L)-risk groups. Using gene set enrichment analysis (GSEA) the functional variations between the H- and L-risk groups were investigated. The association between the prediction signature and immunological state was investigated using single-sample GSEA (ssGSEA). Additionally, the association between the predicted signature and the therapeutic response of LC individuals was evaluated. Lastly, quantitative reverse transcription polymerase chain reaction (qRT-PCR) was performed to verify the risk model. RESULTS We generated a signature comprised of seven AME-associated lncRNAs (LINC01116, AC002511.2, LINC00426, ARHGAP31-AS1, LINC01060, TMCC1-AS1, AC012065.1). The H-risk group had a worse prognosis than the L- risk group. The AME-associated lncRNA signature might determine the prognosis of individuals with LC independently. The AME-related lncRNA signature shows a greater predictive effectiveness than clinic-pathological factors, with an area under the receiver operating characteristic (ROC) curve of 0.806%. When participants were categorized based on several clinico-pathological characteristics, the OS of high-risk individuals was shorter compared to low-risk patients. GSEA demonstrated that the metabolism of different acids and the PPAR signaling pathway are closely associated with low-risk individuals. The prognostic signature was substantially associated with the immunological status of LC individuals, as determined by ssGSEA. High risk individuals were more sensitive to some immunotherapies (including anti-TNFSF4 anti-SIRPA, anti-CD276 and anti-TNFSF15) and some conventional chemotherapy drugs (including lapatinib and paclitaxel). Finally, the expression levels of the seven lncRNAs comprising the signature were tested by qRT-PCR. CONCLUSIONS A basis for the mechanism of AME-associated lncRNAs in LC is provided by the prediction signature, which also offers clinical therapeutic recommendations for LC individuals.
Collapse
Affiliation(s)
- Peng Jiang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Wenbo Xue
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Cheng Xi
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Lin Zhuang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Zhiping Yuan
- Department of Gastroenterology, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
| | - Zhilin Liu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Tao Sun
- Department of Hepatopancreatobiliary Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xuezhong Xu
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Yulin Tan
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Wei Ding
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
| |
Collapse
|