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Zhang L, Yan L, Fu X, Tao Z, Liu S, Li R, Wang T, Mao Y, Shang W, Gong M, Jia X, Wang F. PDK1 promotes epithelial ovarian cancer progression by upregulating BGN. Acta Biochim Biophys Sin (Shanghai) 2024; 57:712-726. [PMID: 39578715 DOI: 10.3724/abbs.2024186] [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] [Indexed: 11/24/2024] Open
Abstract
Pyruvate dehydrogenase kinase 1 (PDK1) is a new therapeutic target that is dysregulated in multiple tumors. This study aims to explore the potential role and regulatory mechanism of PDK1 in epithelial ovarian cancer (EOC). We detect PDK1 expression in EOC tissues and cells using qRT-PCR and western blot analysis, and the effects of PDK1 on EOC cell malignant behaviors are explored. RNA sequencing analyses are performed to explore the differentially expressed genes in PDK1-silenced EOC cells. Furthermore, tumor-bearing mouse models are established to assess the impacts of PDK1 and BGN on EOC tumor growth and metastasis in vivo. The results show that PDK1 is upregulated in EOC tissues and cell lines. Biglycan (BGN) is downregulated in PDK1-silenced EOC cells, and its expression is positively correlated with PDK1 levels in EOC tissues. PDK1 depletion inhibits EOC cell proliferation, migration and invasion. Mechanistically, PDK1 and BGN are colocalized in the cytoplasm of EOC cells and interact with each other. PDK1 positively regulates BGN expression by enhancing BGN mRNA stability. BGN overexpression partially reverses the anti-tumor effects of PDK1 depletion on EOC cell malignant behaviors. PDK1 has also been revealed to upregulate BGN to activate the NF-κB oncogenic pathway in EOC cells. Additionally, PDK1 accelerates tumor growth and metastasis by modulating BGN expression. In conclusion, PDK1 functions as an oncogene, facilitating EOC progression by upregulating BGN and activating the NF-κB pathway. These findings may provide valuable biomarkers for the diagnosis and treatment of EOC.
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Affiliation(s)
- Lei Zhang
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
- Department of Gynecology, the Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian 223300, China
| | - Lina Yan
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing 210004, China
| | - Xin Fu
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
- Clinical Laboratory, Baoshan People's Hospital, Baoshan 678000, China
| | - Ziqi Tao
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
| | - Shuna Liu
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
| | - Rong Li
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing 210004, China
| | - Ting Wang
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
| | - Yepeng Mao
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
| | - Wenwen Shang
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
| | - Mi Gong
- Department of Gynecology, the Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian 223300, China
| | - Xuemei Jia
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing 210004, China
| | - Fang Wang
- Department of Laboratory Medicine, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
- Branch of National Clinical Research Center for Laboratory Medicine, Nanjing 210029, China
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Zhang Y, Wang J, Zhang M, Li X, Zhang F, Zhou M, Yang K, Chen W, Ding H, Tan X, Zhang Q, Qiao Z. Study on the Regulatory Mechanism of the PDK1-Mediated TGF-β/Smad Signaling Pathway in Hypoxia-Induced Yak Lungs. Animals (Basel) 2024; 14:2422. [PMID: 39199957 PMCID: PMC11350703 DOI: 10.3390/ani14162422] [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: 07/14/2024] [Revised: 08/10/2024] [Accepted: 08/20/2024] [Indexed: 09/01/2024] Open
Abstract
The aim of this study was to investigate the effects of hypoxia-induced phenotype, glucose metabolism, ROS levels, and the PDK1-mediated regulation of TGF-β/Smad signaling in yellow cattles, yaks, and those overexpressing PDK1 PASMCs using growth curves, flow cytometry, scratch experiments, glucose and lactic acid assays, RT-qPCR, and Western blotting. The results showed that hypoxia significantly promoted proliferation, migration, antiapoptosis, ROS levels, glucose consumption, and lactate production in yellow cattle PASMCs (p < 0.05), and the cells were dedifferentiated from the contractile phenotype; conversely, hypoxia had no significant effect on yak PASMCs (p > 0.05). PDK1 overexpression significantly promoted proliferation, antiapoptosis, glucose consumption, and lactate production in yak PASMCs under normoxia and hypoxia (p < 0.05), decreased their migration levels under hypoxia (p < 0.05), and dedifferentiated the contractile phenotype of the cells. Overexpression of PDK1 in yak PASMCs is detrimental to their adaptation to hypoxic environments. Yak PASMCs adapted to the effects of hypoxia on lung tissue by downregulating the expression of genes related to the PDK1 and TGF-β/Smad signaling pathways. Taken together, the regulation of PDK1-mediated TGF-β/Smad signaling may be involved in the process of yaks' adaptation to the hypoxic environment of the plateau, reflecting the good adaptive ability of yaks. The present study provides basic information to further elucidate the mechanism of PDK1-mediated TGF-β/Smad signaling induced by hypoxia in the lungs of yaks, as well as target genes for the treatment of plateau diseases in humans and animals.
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Affiliation(s)
- Yiyang Zhang
- Engineering Research Center of Key Technology and Industrialization of Cell-Based Vaccine, Ministry of Education, Northwest Minzu University, Lanzhou 730030, China; (Y.Z.); (X.L.); (F.Z.); (M.Z.); (Z.Q.)
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Jun Wang
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Meng Zhang
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Xiaoyun Li
- Engineering Research Center of Key Technology and Industrialization of Cell-Based Vaccine, Ministry of Education, Northwest Minzu University, Lanzhou 730030, China; (Y.Z.); (X.L.); (F.Z.); (M.Z.); (Z.Q.)
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Fan Zhang
- Engineering Research Center of Key Technology and Industrialization of Cell-Based Vaccine, Ministry of Education, Northwest Minzu University, Lanzhou 730030, China; (Y.Z.); (X.L.); (F.Z.); (M.Z.); (Z.Q.)
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Manlin Zhou
- Engineering Research Center of Key Technology and Industrialization of Cell-Based Vaccine, Ministry of Education, Northwest Minzu University, Lanzhou 730030, China; (Y.Z.); (X.L.); (F.Z.); (M.Z.); (Z.Q.)
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Kun Yang
- Engineering Research Center of Key Technology and Industrialization of Cell-Based Vaccine, Ministry of Education, Northwest Minzu University, Lanzhou 730030, China; (Y.Z.); (X.L.); (F.Z.); (M.Z.); (Z.Q.)
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Weiji Chen
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Haie Ding
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Xiao Tan
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
| | - Qian Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China;
| | - Zilin Qiao
- Engineering Research Center of Key Technology and Industrialization of Cell-Based Vaccine, Ministry of Education, Northwest Minzu University, Lanzhou 730030, China; (Y.Z.); (X.L.); (F.Z.); (M.Z.); (Z.Q.)
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
- Life Science and Engineering College, Northwest Minzu University, Lanzhou 730030, China; (J.W.); (M.Z.); (W.C.); (H.D.); (X.T.)
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Li H, Sun J, Hu H, Wang Y. Transcription Factor E2F8 Activates PDK1-Mediated DNA Damage Repair to Enhance Cisplatin Resistance in Lung Adenocarcinoma. Pharmacology 2024; 109:341-356. [PMID: 38810606 DOI: 10.1159/000537819] [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: 08/10/2023] [Accepted: 02/12/2024] [Indexed: 05/31/2024]
Abstract
INTRODUCTION Cisplatin (DDP) is the commonest chemo drug in lung adenocarcinoma (LUAD) treatment, and DDP resistance is a significant barrier to therapeutic therapy. This study attempted to elucidate the impact of PDK1 on DDP resistance in LUAD and its mechanism. METHODS Bioinformatics analysis was used to determine the expression and enriched pathways of PDK1 in LUAD tissue. Subsequently, E2F8, the upstream transcription factor of PDK1, was predicted, and the binding relationship between the two was analyzed using dual-luciferase and ChIP experiments. PDK1 and E2F8 levels in LUAD tissues and cells were detected via qRT-PCR. Cell viability, proliferation, and apoptosis levels were assayed by CCK-8, EdU, and flow cytometry experiments, respectively. Comet assay was used to assess DNA damage, and immunofluorescence was used to assess the expression of γ-H2AX. NHEJ reporter assay was to assess DNA repair efficiency. Western blot tested levels of DNA damage repair (DDR)-related proteins. Immunohistochemistry assessed the expression of relevant genes. Finally, an animal model was constructed to investigate the influence of PDK1 expression on LUAD growth. RESULTS PDK1 was found to be upregulated in LUAD and enhanced DDP resistance by mediating DDR. E2F8 was identified as an upstream transcription factor of PDK1 and was highly expressed in LUAD. Rescue experiments presented that knocking down E2F8 could weaken the promotion of PDK1 overexpression on DDR-mediated DDP resistance in LUAD. In vivo experiments showed that knocking down PDK1 plus DDP significantly reduced the growth of xenograft tumors. CONCLUSION Our results indicated that the E2F8/PDK1 axis mediated DDR to promote DDP resistance in LUAD. Our findings lead to an improved treatment strategy after drug resistance.
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Affiliation(s)
- Hongliang Li
- Department of Radiotherapy, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huaian, China
| | - Junxia Sun
- Department of Radiotherapy, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huaian, China
| | - Haibo Hu
- Department of Respiratory Diseases, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huaian, China
| | - Yi Wang
- Department of Cardiothoracic Surgery, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huaian, China
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Hsa_circ_0000851 promotes PDK1/p-AKT-mediated cell proliferation and migration by regulating miR-1183 in triple-negative breast cancer. Cell Signal 2023; 101:110494. [PMID: 36241055 DOI: 10.1016/j.cellsig.2022.110494] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 09/30/2022] [Accepted: 10/05/2022] [Indexed: 11/07/2022]
Abstract
Breast cancer (BC) is the most common cause of cancer-related mortality in women worldwide. Circular RNAs (circRNAs), a type of non-coding RNA, have garnered interest because of their unique looped structure. In recent years, circRNAs have been shown to be involved in various diseases, including carcinogenesis, and to serve as biomarkers for early risk assessment and survival prediction of different tumour types. This study aimed to identify a novel circRNA, hsa_circ_0000851, generated from the sixth intron of the oncogene TCF4, reported to be involved in BC pathogenesis. Our study showed that hsa_circ_0000851 was mainly located in the cytoplasm of BC cells and upregulated in BC cell lines and tissue samples. Higher hsa_circ_0000851 expression levels resulted in increased proliferation of BC cells both in vitro and in vivo, while treatment of BC cells with hsa_circ_0000851 siRNA decreased their proliferation. We found that hsa_circ_0000851 bound directly to miR-1183, accelerating the expression of its target gene PDK1, which facilities BC cell proliferation and migration through PDK1/p-AKT.
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Chen Q, Han H, Lin F, Yang L, Feng L, Lai X, Wen Z, Yang M, Wang C, Ma Y, Yin T, Lu G, Lin H, Qi J, Yang Y. Novel shikonin derivatives suppress cell proliferation, migration and induce apoptosis in human triple-negative breast cancer cells via regulating PDK1/PDHC axis. Life Sci 2022; 310:121077. [DOI: 10.1016/j.lfs.2022.121077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/03/2022] [Accepted: 10/11/2022] [Indexed: 11/05/2022]
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Pyruvate dehydrogenase kinases (PDKs): an overview toward clinical applications. Biosci Rep 2021; 41:228121. [PMID: 33739396 PMCID: PMC8026821 DOI: 10.1042/bsr20204402] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/12/2021] [Accepted: 03/17/2021] [Indexed: 01/01/2023] Open
Abstract
Pyruvate dehydrogenase kinase (PDK) can regulate the catalytic activity of pyruvate decarboxylation oxidation via the mitochondrial pyruvate dehydrogenase complex, and it further links glycolysis with the tricarboxylic acid cycle and ATP generation. This review seeks to elucidate the regulation of PDK activity in different species, mainly mammals, and the role of PDK inhibitors in preventing increased blood glucose, reducing injury caused by myocardial ischemia, and inducing apoptosis of tumor cells. Regulations of PDKs expression or activity represent a very promising approach for treatment of metabolic diseases including diabetes, heart failure, and cancer. The future research and development could be more focused on the biochemical understanding of the diseases, which would help understand the cellular energy metabolism and its regulation by pharmacological effectors of PDKs.
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Fortarezza F, Pezzuto F, Cazzato G, Punzo C, d’Amati A, Lettini T, Gentile M, Buonadonna AL, Mariano M, Pezzolla A, Serio G. Bilateral Phyllodes Giant Tumor. A Case Report Analyzed by Array-CGH. Diagnostics (Basel) 2020; 10:825. [PMID: 33076253 PMCID: PMC7602371 DOI: 10.3390/diagnostics10100825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 02/05/2023] Open
Abstract
The breast phyllodes tumor is a biphasic tumor that accounts for less than of 1% of all breast neoplasms. It is classified as benign, borderline, or malignant, and can mimic benign masses. Some recurrent alterations have been identified. However, a precise molecular classification of these tumors has not yet been established. Herein, we describe a case of a 43-year-old woman that was admitted to the emergency room for a significant bleeding from the breast skin. A voluminous ulcerative mass of the left breast and multiple nodules with micro-calcifications on the right side were detected at a physical examination. A left total mastectomy and a nodulectomy of the right breast was performed. The histological diagnosis of the surgical specimens reported a bilateral giant phyllodes tumor, showing malignant features on the left and borderline characteristics associated with a fibroadenoma on the right. A further molecular analysis was carried out by an array-Comparative Genomic Hybridization (CGH) to characterize copy-number alterations. Many losses were detected in the malignant mass, involving several tumor suppressor genes. These findings could explain the malignant growth and the metastatic risk. In our study, genomic profiling by an array-CGH revealed a greater chromosomal instability in the borderline mass (40 total defects) than in the malignant (19 total defects) giant phyllodes tumor, reflecting the tumor heterogeneity. Should our results be confirmed with more sensitive and specific molecular tests (DNA sequencing and FISH analysis), they could allow a better selection of patients with adverse pathological features, thus optimizing and improving patient's management.
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Affiliation(s)
- Francesco Fortarezza
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, Pathology Unit, University of Padova, 35121 Padova, Italy; (F.F.); (F.P.)
| | - Federica Pezzuto
- Department of Cardiac, Thoracic, Vascular Sciences and Public Health, Pathology Unit, University of Padova, 35121 Padova, Italy; (F.F.); (F.P.)
| | - Gerardo Cazzato
- Department of Emergency and Organ Transplantation (DETO), Pathology Section, Breast Unit Care, University of Bari, Medical School, 70124 Bari, Italy; (G.C.); (A.d.); (T.L.); (M.M.)
| | - Clelia Punzo
- Department of Emergency and Organ Transplantation (DETO), Surgery Section, Breast Unit Care, University of Bari, Medical School, 70124 Bari, Italy; (C.P.); (A.P.)
| | - Antonio d’Amati
- Department of Emergency and Organ Transplantation (DETO), Pathology Section, Breast Unit Care, University of Bari, Medical School, 70124 Bari, Italy; (G.C.); (A.d.); (T.L.); (M.M.)
| | - Teresa Lettini
- Department of Emergency and Organ Transplantation (DETO), Pathology Section, Breast Unit Care, University of Bari, Medical School, 70124 Bari, Italy; (G.C.); (A.d.); (T.L.); (M.M.)
| | - Mattia Gentile
- Medical Genetics, “Di Venere” Hospital, 70131 Carbonara (Bari), Italy; (M.G.); (A.L.B.)
| | | | - Marta Mariano
- Department of Emergency and Organ Transplantation (DETO), Pathology Section, Breast Unit Care, University of Bari, Medical School, 70124 Bari, Italy; (G.C.); (A.d.); (T.L.); (M.M.)
| | - Angela Pezzolla
- Department of Emergency and Organ Transplantation (DETO), Surgery Section, Breast Unit Care, University of Bari, Medical School, 70124 Bari, Italy; (C.P.); (A.P.)
| | - Gabriella Serio
- Department of Emergency and Organ Transplantation (DETO), Pathology Section, Breast Unit Care, University of Bari, Medical School, 70124 Bari, Italy; (G.C.); (A.d.); (T.L.); (M.M.)
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