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Yu W, Peng X, Cai X, Xu H, Wang C, Liu F, Luo D, Tang S, Wang Y, Du X, Gao Y, Tian T, Liang S, Chen C, Kim NH, Yuan B, Zhang J, Jiang H. Transcriptome analysis of porcine oocytes during postovulatory aging. Theriogenology 2024:S0093-691X(24)00209-7. [PMID: 38821784 DOI: 10.1016/j.theriogenology.2024.05.035] [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: 10/17/2023] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 06/02/2024]
Abstract
Decreased oocyte quality is a significant contributor to the decline in female fertility that accompanies aging in mammals. Oocytes rely on mRNA stores to support their survival and integrity during the protracted period of transcriptional dormancy as they await ovulation. However, the changes in mRNA levels and interactions that occur during porcine oocyte maturation and aging remain unclear. In this study, the mRNA expression profiles of porcine oocytes during the GV, MII, and aging (24 h after the MII stage) stages were explored by transcriptome sequencing to identify the key genes and pathways that affect oocyte maturation and postovulatory aging. The results showed that 10,929 genes were coexpressed in porcine oocytes during the GV stage, MII stage, and aging stage. In addition, 3037 genes were expressed only in the GV stage, 535 genes were expressed only in the MII stage, and 120 genes were expressed only in the aging stage. The correlation index between the GV and MII stages (0.535) was markedly lower than that between the MII and aging stages (0.942). A total of 3237 genes, which included 1408 upregulated and 1829 downregulated genes, were differentially expressed during porcine oocyte postovulatory aging (aging stage vs. MII stage). Key functional genes, including ATP2A1, ATP2A3, ATP2B2, NDUFS1, NDUFA2, NDUFAF3, SREBF1, CYP11A1, CYP3A29, GPx4, CCP110, STMN1, SPC25, Sirt2, SYCP3, Fascin1/2, PFN1, Cofilin, Tmod3, FLNA, LRKK2, CHEK1/2, DDB1/2, DDIT4L, and TONSL, and key molecular pathways, such as the calcium signaling pathway, MAPK signaling pathway, TGF-β signaling pathway, PI3K/Akt signaling pathway, FoxO signaling pathway, gap junctions, and thermogenesis, were found in abundance during porcine postovulatory aging. These genes are mainly involved in the regulation of many biological processes, such as oxidative stress, calcium homeostasis, mitochondrial function, and lipid peroxidation, during porcine oocyte postovulatory aging. These results contribute to a more in-depth understanding of the biological changes, key regulatory genes and related biological pathways that are involved in oocyte aging and provide a theoretical basis for improving the efficiency of porcine embryo production in vitro and in vivo.
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Affiliation(s)
- Wenjie Yu
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Xinyue Peng
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Xiaoshi Cai
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Hong Xu
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Chen Wang
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Fengjiao Liu
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Dan Luo
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Shuhan Tang
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Yue Wang
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Xiaoxue Du
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Yan Gao
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Tian Tian
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China; Center of Reproductive Medicine & Center of Prenatal Diagnosis, First Hospital, Jilin University, Changchun, 130062, Jilin, China
| | - Shuang Liang
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Chengzhen Chen
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Nam-Hyung Kim
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Bao Yuan
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Jiabao Zhang
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China
| | - Hao Jiang
- College of Animal Sciences, Jilin University, Changchun, 130062, Jilin, China.
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2
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Lei T, Rui Y, Xiaoshuang Z, Jinglan Z, Jihong Z. Mitochondria transcription and cancer. Cell Death Discov 2024; 10:168. [PMID: 38589371 PMCID: PMC11001877 DOI: 10.1038/s41420-024-01926-3] [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: 12/14/2023] [Revised: 03/14/2024] [Accepted: 03/20/2024] [Indexed: 04/10/2024] Open
Abstract
Mitochondria are major organelles involved in several processes related to energy supply, metabolism, and cell proliferation. The mitochondria function is transcriptionally regulated by mitochondria DNA (mtDNA), which encodes the key proteins in the electron transport chain that is indispensable for oxidative phosphorylation (OXPHOS). Mitochondrial transcriptional abnormalities are closely related to a variety of human diseases, such as cardiovascular diseases, and diabetes. The mitochondria transcription is regulated by the mtDNA, mitochondrial RNA polymerase (POLRMT), two transcription factors (TFAM and TF2BM), one transcription elongation (TEFM), and one known transcription termination factor (mTERFs). Dysregulation of these factors directly leads to altered expression of mtDNA in tumor cells, resulting in cellular metabolic reprogramming and mitochondrial dysfunction. This dysregulation plays a role in modulating tumor progression. Therefore, understanding the role of mitochondrial transcription in cancer can have implications for cancer diagnosis, prognosis, and treatment. Targeting mitochondrial transcription or related pathways may provide potential therapeutic strategies for cancer treatment. Additionally, assessing mitochondrial transcriptional profiles or biomarkers in cancer cells or patient samples may offer diagnostic or prognostic information.
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Affiliation(s)
- Tang Lei
- Medical School, Kunming University of Science and Technology, Kunming, China
| | - Yu Rui
- Medical School, Kunming University of Science and Technology, Kunming, China
| | - Zhou Xiaoshuang
- Medical School, Kunming University of Science and Technology, Kunming, China
| | - Zhang Jinglan
- Medical School, Kunming University of Science and Technology, Kunming, China
| | - Zhang Jihong
- Medical School, Kunming University of Science and Technology, Kunming, China.
- Yunnan Province Clinical Research Center for Hematologic Disease, Kunming, China.
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Costa MDN, Silva TA, Guimarães DSPSF, Ricci-Azevedo R, Teixeira FR, Silveira LR, Gomes MD, Faça VM, de Oliveira EB, Calado RT, Silva RN. The recombinant L-lysine α-oxidase from the fungus Trichoderma harzianum promotes apoptosis and necrosis of leukemia CD34 + hematopoietic cells. Microb Cell Fact 2024; 23:51. [PMID: 38355518 PMCID: PMC10865671 DOI: 10.1186/s12934-024-02315-2] [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: 06/27/2023] [Accepted: 01/24/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND In hematologic cancers, including leukemia, cells depend on amino acids for rapid growth. Anti-metabolites that prevent their synthesis or promote their degradation are considered potential cancer treatment agents. Amino acid deprivation triggers proliferation inhibition, autophagy, and programmed cell death. L-lysine, an essential amino acid, is required for tumor growth and has been investigated for its potential as a target for cancer treatment. L-lysine α-oxidase, a flavoenzyme that degrades L-lysine, has been studied for its ability to induce apoptosis and prevent cancer cell proliferation. In this study, we describe the use of L-lysine α-oxidase (LO) from the filamentous fungus Trichoderma harzianum for cancer treatment. RESULTS The study identified and characterized a novel LO from T. harzianum and demonstrated that the recombinant protein (rLO) has potent and selective cytotoxic effects on leukemic cells by triggering the apoptotic cascade through mitochondrial dysfunction. CONCLUSIONS The results support future translational studies using the recombinant LO as a potential drug for the treatment of leukemia.
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Affiliation(s)
- Mariana do Nascimento Costa
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Thiago Aparecido Silva
- Department of Cell Biology and Molecular and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
- Department of Clinical Analysis, School of Pharmaceutical Sciences in Araraquara, Sao Paulo State University, Araraquara, SP, Brazil
| | | | - Rafael Ricci-Azevedo
- Department of Cell Biology and Molecular and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Felipe Roberti Teixeira
- Department of Genetics and Evolution, Center of Biological and Health Sciences, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Leonardo Reis Silveira
- Obesity and Comorbidities Research Center, Institute of Biology, University of Campinas, Campinas, SP, Brazil
| | - Marcelo Damário Gomes
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Vítor Marcel Faça
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Eduardo Brandt de Oliveira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Rodrigo T Calado
- Department of Medical Imaging, Hematology, and Oncology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Roberto N Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil.
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Li X, Yao L, Wang T, Gu X, Wu Y, Jiang T. Identification of the mitochondrial protein POLRMT as a potential therapeutic target of prostate cancer. Cell Death Dis 2023; 14:665. [PMID: 37816734 PMCID: PMC10564732 DOI: 10.1038/s41419-023-06203-2] [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: 05/21/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 10/12/2023]
Abstract
RNA polymerase mitochondria (POLRMT) is essential for mitochondrial transcription machinery and other mitochondrial functions. Its expression and potential functions in prostate cancer were explored here. The Cancer Genome Atlas prostate cancer cohort (TCGA PRAD) shows that POLRMT mRNA expression is upregulated in prostate cancer tissues and POLRMT upregulation is correlated with poor patients' survival. POLRMT mRNA and protein levels were upregulated in local prostate cancer tissues and different primary/immortalized prostate cancer cells. Genetic depletion of POLRMT, using viral shRNA or CRISPR/Cas9 gene editing methods, impaired mitochondrial functions in prostate cancer cells, leading to mitochondrial depolarization, oxidative stress, mitochondria complex I inhibition, and ATP depletion. Moreover, POLRMT depletion resulted in robust inhibition of prostate cancer cell viability, proliferation, and migration, and provoked apoptosis. Conversely, prostate cancer cell proliferation, migration, and ATP contents were strengthened following ectopic POLRMT overexpression. In vivo, intratumoral injection of POLRMT shRNA adeno-associated virus impeded prostate cancer xenograft growth in nude mice. POLRMT silencing, oxidative stress, and ATP depletion were detected in POLRMT shRNA-treated prostate cancer xenograft tissues. IMT1 (inhibitor of mitochondrial transcription 1), the first-in-class POLRMT inhibitor, inhibited prostate cancer cell growth in vitro and in vivo. Together, overexpressed POLRMT is an important mitochondrial protein for prostate cancer cell growth, representing a novel and promising diagnostic and therapeutic oncotarget.
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Affiliation(s)
- Xiaojun Li
- Department of Urology, Taicang Affiliated Hospital of Soochow University, The First People's Hospital of Taicang, Taicang, China
| | - Linya Yao
- Department of Urology, Kunshan Hospital of Traditional Chinese Medicine Affiliated to Yangzhou University, Kunshan, China
| | - Tao Wang
- Department of Urology, Taicang Affiliated Hospital of Soochow University, The First People's Hospital of Taicang, Taicang, China
| | - Xiaolei Gu
- Department of Urology, Taicang Affiliated Hospital of Soochow University, The First People's Hospital of Taicang, Taicang, China
| | - Yufan Wu
- Department of Urology, Kunshan Hospital of Traditional Chinese Medicine Affiliated to Yangzhou University, Kunshan, China
| | - Ting Jiang
- Department of Urology, Taicang Affiliated Hospital of Soochow University, The First People's Hospital of Taicang, Taicang, China.
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Rico A, Valls A, Guembelzu G, Azpitarte M, Aiastui A, Zufiria M, Jaka O, López de Munain A, Sáenz A. Altered expression of proteins involved in metabolism in LGMDR1 muscle is lost in cell culture conditions. Orphanet J Rare Dis 2023; 18:315. [PMID: 37817200 PMCID: PMC10565977 DOI: 10.1186/s13023-023-02873-5] [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: 06/20/2023] [Accepted: 08/24/2023] [Indexed: 10/12/2023] Open
Abstract
BACKGROUND Limb-girdle muscular dystrophy R1 calpain 3-related (LGMDR1) is an autosomal recessive muscular dystrophy due to mutations in the CAPN3 gene. While the pathophysiology of this disease has not been clearly established yet, Wnt and mTOR signaling pathways impairment in LGMDR1 muscles has been reported. RESULTS A reduction in Akt phosphorylation ratio and upregulated expression of proteins implicated in glycolysis (HK-II) and in fructose and lactate transport (GLUT5 and MCT1) in LGMDR1 muscle was observed. In vitro analysis to establish mitochondrial and glycolytic functions of primary cultures were performed, however, no differences between control and patients were observed. Additionally, gene expression analysis showed a lack of correlation between primary myoblasts/myotubes and LGMDR1 muscle while skin fibroblasts and CD56- cells showed a slightly better correlation with muscle. FRZB gene was upregulated in all the analyzed cell types (except in myoblasts). CONCLUSIONS Proteins implicated in metabolism are deregulated in LGMDR1 patients' muscle. Obtained results evidence the limited usefulness of primary myoblasts/myotubes for LGMDR1 gene expression and metabolic studies. However, since FRZB is the only gene that showed upregulation in all the analyzed cell types it is suggested its role as a key regulator of the pathophysiology of the LGMDR1 muscle fiber. The Wnt signaling pathway inactivation, secondary to FRZB upregulation, and GLUT5 overexpression may participate in the impaired adipogenesis in LGMD1R patients.
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Affiliation(s)
- Anabel Rico
- Neurosciences Area, Biodonostia Health Research Institute, San Sebastián, Spain
- CIBERNED, CIBER, Spanish Ministry of Science and Innovation, Carlos III Health Institute, Madrid, Spain
| | - Andrea Valls
- Neurosciences Area, Biodonostia Health Research Institute, San Sebastián, Spain
- CIBERNED, CIBER, Spanish Ministry of Science and Innovation, Carlos III Health Institute, Madrid, Spain
| | - Garazi Guembelzu
- Neurosciences Area, Biodonostia Health Research Institute, San Sebastián, Spain
- CIBERNED, CIBER, Spanish Ministry of Science and Innovation, Carlos III Health Institute, Madrid, Spain
| | - Margarita Azpitarte
- Cell Culture, Histology and Multidisciplinary 3D Printing Platform, Biodonostia Health Research Institute, San Sebastián, Spain
| | - Ana Aiastui
- Department of Neurology, Donostialdea Integrated Health Organization, San Sebastián, Spain
| | - Mónica Zufiria
- Neurosciences Area, Biodonostia Health Research Institute, San Sebastián, Spain
- CIBERNED, CIBER, Spanish Ministry of Science and Innovation, Carlos III Health Institute, Madrid, Spain
| | - Oihane Jaka
- Neurosciences Area, Biodonostia Health Research Institute, San Sebastián, Spain
- CIBERNED, CIBER, Spanish Ministry of Science and Innovation, Carlos III Health Institute, Madrid, Spain
| | - Adolfo López de Munain
- Neurosciences Area, Biodonostia Health Research Institute, San Sebastián, Spain
- CIBERNED, CIBER, Spanish Ministry of Science and Innovation, Carlos III Health Institute, Madrid, Spain
- Department of Neurology, Donostialdea Integrated Health Organization, San Sebastián, Spain
- Department of Neurosciences, University of the Basque Country UPV-EHU, San Sebastián, Spain
- Faculty of Medicine, University of Deusto, Bilbao, Spain
| | - Amets Sáenz
- Neurosciences Area, Biodonostia Health Research Institute, San Sebastián, Spain.
- CIBERNED, CIBER, Spanish Ministry of Science and Innovation, Carlos III Health Institute, Madrid, Spain.
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Rocca C, Soda T, De Francesco EM, Fiorillo M, Moccia F, Viglietto G, Angelone T, Amodio N. Mitochondrial dysfunction at the crossroad of cardiovascular diseases and cancer. J Transl Med 2023; 21:635. [PMID: 37726810 PMCID: PMC10507834 DOI: 10.1186/s12967-023-04498-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 09/01/2023] [Indexed: 09/21/2023] Open
Abstract
A large body of evidence indicates the existence of a complex pathophysiological relationship between cardiovascular diseases and cancer. Mitochondria are crucial organelles whose optimal activity is determined by quality control systems, which regulate critical cellular events, ranging from intermediary metabolism and calcium signaling to mitochondrial dynamics, cell death and mitophagy. Emerging data indicate that impaired mitochondrial quality control drives myocardial dysfunction occurring in several heart diseases, including cardiac hypertrophy, myocardial infarction, ischaemia/reperfusion damage and metabolic cardiomyopathies. On the other hand, diverse human cancers also dysregulate mitochondrial quality control to promote their initiation and progression, suggesting that modulating mitochondrial homeostasis may represent a promising therapeutic strategy both in cardiology and oncology. In this review, first we briefly introduce the physiological mechanisms underlying the mitochondrial quality control system, and then summarize the current understanding about the impact of dysregulated mitochondrial functions in cardiovascular diseases and cancer. We also discuss key mitochondrial mechanisms underlying the increased risk of cardiovascular complications secondary to the main current anticancer strategies, highlighting the potential of strategies aimed at alleviating mitochondrial impairment-related cardiac dysfunction and tumorigenesis. It is hoped that this summary can provide novel insights into precision medicine approaches to reduce cardiovascular and cancer morbidities and mortalities.
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Affiliation(s)
- Carmine Rocca
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E and E.S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy
| | - Teresa Soda
- Department of Health Science, University Magna Graecia of Catanzaro, 88100, Catanzaro, Italy
| | - Ernestina Marianna De Francesco
- Endocrinology Unit, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - Marco Fiorillo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Rende, Italy
| | - Francesco Moccia
- Laboratory of General Physiology, Department of Biology and Biotechnology "L. Spallanzani", University of Pavia, 27100, Pavia, Italy
| | - Giuseppe Viglietto
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, 88100, Catanzaro, Italy
| | - Tommaso Angelone
- Cellular and Molecular Cardiovascular Pathophysiology Laboratory, Department of Biology, E and E.S. (DiBEST), University of Calabria, Arcavacata di Rende, 87036, Cosenza, Italy.
- National Institute of Cardiovascular Research (I.N.R.C.), 40126, Bologna, Italy.
| | - Nicola Amodio
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, 88100, Catanzaro, Italy.
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Patintingan CG, Louisa M, Juniantito V, Arozal W, Hanifah S, Wanandi SI, Thandavarayan R. Moringa oleifera Leaves Extract Ameliorates Doxorubicin-Induced Cardiotoxicity via Its Mitochondrial Biogenesis Modulatory Activity in Rats. J Exp Pharmacol 2023; 15:307-319. [PMID: 37525636 PMCID: PMC10387274 DOI: 10.2147/jep.s413256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 07/12/2023] [Indexed: 08/02/2023] Open
Abstract
Background Doxorubicin, an anthracycline class of anticancer, is an effective chemotherapeutic agent with serious adverse effects, mainly cardiotoxicity. Several possible causes of doxorubicin cardiotoxicity are increased oxidative stress, nucleic acid and protein synthesis inhibition, cardiomyocyte apoptosis, and mitochondrial biogenesis disruptions. Moringa oleifera (MO), a naturally derived medicine, is known for its antioxidative properties and activity in alleviating mitochondrial dysfunction. To determine the potency and possible cardioprotective mechanism of MO leaves aqueous extract via the mitochondrial biogenesis pathway in doxorubicin-induced rats. Methods Twenty-four Sprague-Dawley rats were divided into four groups of six. The first group was normal rats; the second group was treated with doxorubicin 4 mg/kg BW intraperitoneally once weekly for four weeks; the third and fourth groups were treated with doxorubicin 4 mg/kg BW intraperitoneally once weekly, and MO leaves extract at 200 mg/kg BW or 400 mg/kg BW orally daily, for four weeks. At the end of the fourth week, blood and cardiac tissues were obtained and analyzed for cardiac biomarkers, mitochondrial DNA copy number, mRNA expressions of peroxisome-activated receptor-gamma coactivator-1 alpha (PGC-1α), the nuclear factor erythroid 2-related factor 2 (Nrf2), superoxide dismutase 2 (SOD2), caspase 3, the activity of glutathione peroxidase (GPx), levels of 8-hydroxy-2-deoxyguanosine (8-OH-dG), and malondialdehyde. Results MO leaves extract was shown to decrease biomarkers of cardiac damage (LDH and CK-MB), malondialdehyde levels, and GPx activity. These changes align with the reduction of mRNA expressions of caspase-3, the increase of mRNA expressions of PGC-1α and Nrf2, and the elevation of mitochondrial DNA copy number. MO leaves extracts did not influence the mRNA expressions of superoxide dismutase 2 (SOD2) or the levels of 8-OH-dG. Conclusion Moringa oleifera leaves extract ameliorates doxorubicin-induced cardiotoxicity by reducing apoptosis and restoring gene expression of PGC-1α and Nrf2, a key regulator in mitochondrial biogenesis.
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Affiliation(s)
| | - Melva Louisa
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Vetnizah Juniantito
- Department of Veterinary Clinic Reproduction and Pathology, Faculty of Veterinary Medicine, Agriculture Institute of Bogor, Bogor, Indonesia
| | - Wawaimuli Arozal
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Silmi Hanifah
- Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
| | - Septelia Inawati Wanandi
- Department of Biochemistry and Molecular Biology, Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia
| | - Rajarajan Thandavarayan
- Department of Cardiovascular Sciences Houston Methodist Research Institute, Houston, TX, USA
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Guo Z, Li Z, Zhang M, Bao M, He B, Zhou X. LncRNA FAS-AS1 upregulated by its genetic variation rs6586163 promotes cell apoptosis in nasopharyngeal carcinoma through regulating mitochondria function and Fas splicing. Sci Rep 2023; 13:8218. [PMID: 37217794 DOI: 10.1038/s41598-023-35502-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/18/2023] [Indexed: 05/24/2023] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a common head and neck malignant with a high incidence in Southern China. Genetic aberrations play a vital role in the pathogenesis, progression and prognosis of NPC. In the present study, we elucidated the underlying mechanism of FAS-AS1 and its genetic variation rs6586163 in NPC. We demonstrated that FAS-AS1 rs6586163 variant genotype carriers were associated with lower risk of NPC (CC vs. AA, OR = 0.645, P = 0.006) and better overall survival (AC + CC vs. AA, HR = 0.667, P = 0.030). Mechanically, rs6586163 increased the transcriptional activity of FAS-AS1 and contributed to ectopic overexpression of FAS-AS1 in NPC. rs6586163 also exhibited an eQTL trait and the genes affected by rs6586163 were enriched in apoptosis related signaling pathway. FAS-AS1 was downregulated in NPC tissues and over-expression of FAS-AS1 was associated with early clinical stage and better short-term treatment efficacy for NPC patients. Overexpression of FAS-AS1 inhibited NPC cell viability and promoted cell apoptosis. GSEA analysis of RNA-seq data suggested FAS-AS1 participate in mitochondria regulation and mRNA alternative splicing. Transmission electron microscopic examination verified that the mitochondria was swelled, the mitochondrial cristae was fragmented or disappeared, and their structures were destroyed in FAS-AS1 overexpressed cells. Furthermore, we identified HSP90AA1, CS, BCL2L1, SOD2 and PPARGC1A as the top 5 hub genes of FAS-AS1 regulated genes involved in mitochondria function. We also proved FAS-AS1 could affect Fas splicing isoform sFas/mFas expression ratio, and apoptotic protein expression, thus leading to increased apoptosis. Our study provided the first evidence that FAS-AS1 and its genetic polymorphism rs6586163 triggered apoptosis in NPC, which might have a potential as new biomarkers for NPC susceptibility and prognosis.
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Affiliation(s)
- Zhen Guo
- Academician Workstation, Changsha Medical University, LeiFeng Avenue No.1501, Changsha, 410219, People's Republic of China
- Hunan Key Laboratory of the Fundamental and Clinical Research on Functional Nucleic Acid, Changsha Medical University, Changsha, 410219, People's Republic of China
- Hunan Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations, Changsha Medical University, Changsha, 410219, People's Republic of China
| | - ZiBo Li
- Academician Workstation, Changsha Medical University, LeiFeng Avenue No.1501, Changsha, 410219, People's Republic of China
| | - MengLing Zhang
- School of Stomatology, Changsha Medical University, Changsha, 410219, People's Republic of China
| | - MeiHua Bao
- Academician Workstation, Changsha Medical University, LeiFeng Avenue No.1501, Changsha, 410219, People's Republic of China
| | - BinSheng He
- Academician Workstation, Changsha Medical University, LeiFeng Avenue No.1501, Changsha, 410219, People's Republic of China
| | - XiaoLong Zhou
- Academician Workstation, Changsha Medical University, LeiFeng Avenue No.1501, Changsha, 410219, People's Republic of China.
- Hunan Key Laboratory of the Fundamental and Clinical Research on Functional Nucleic Acid, Changsha Medical University, Changsha, 410219, People's Republic of China.
- Hunan Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations, Changsha Medical University, Changsha, 410219, People's Republic of China.
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Chaudhary S, Ganguly S, Palanichamy JK, Singh A, Pradhan D, Bakhshi R, Chopra A, Bakhshi S. Mitochondrial gene expression signature predicts prognosis of pediatric acute myeloid leukemia patients. Front Oncol 2023; 13:1109518. [PMID: 36845715 PMCID: PMC9947241 DOI: 10.3389/fonc.2023.1109518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 01/11/2023] [Indexed: 02/11/2023] Open
Abstract
Introduction Gene expression profile of mitochondrial-related genes is not well deciphered in pediatric acute myeloid leukaemia (AML). We aimed to identify mitochondria-related differentially expressed genes (DEGs) in pediatric AML with their prognostic significance. Methods Children with de novo AML were included prospectively between July 2016-December 2019. Transcriptomic profiling was done for a subset of samples, stratified by mtDNA copy number. Top mitochondria-related DEGs were identified and validated by real-time PCR. A prognostic gene signature risk score was formulated using DEGs independently predictive of overall survival (OS) in multivariable analysis. Predictive ability of the risk score was estimated along with external validation in The Tumor Genome Atlas (TCGA) AML dataset. Results In 143 children with AML, twenty mitochondria-related DEGs were selected for validation, of which 16 were found to be significantly dysregulated. Upregulation of SDHC (p<0.001), CLIC1 (p=0.013) and downregulation of SLC25A29 (p<0.001) were independently predictive of inferior OS, and included for developing prognostic risk score. The risk score model was independently predictive of survival over and above ELN risk categorization (Harrell's c-index: 0.675). High-risk patients (risk score above median) had significantly inferior OS (p<0.001) and event free survival (p<0.001); they were associated with poor-risk cytogenetics (p=0.021), ELN intermediate/poor risk group (p=0.016), absence of RUNX1-RUNX1T1 (p=0.027), and not attaining remission (p=0.016). On external validation, the risk score also predicted OS (p=0.019) in TCGA dataset. Discussion We identified and validated mitochondria-related DEGs with prognostic impact in pediatric AML and also developed a novel 3-gene based externally validated gene signature predictive of survival.
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Affiliation(s)
- Shilpi Chaudhary
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Shuvadeep Ganguly
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | | | - Archna Singh
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Dibyabhaba Pradhan
- Computational Genomics Centre, Indian Council of Medical Research (ICMR), New Delhi, India
| | - Radhika Bakhshi
- Shaheed Rajguru College of Applied Sciences for Women, University of Delhi, Delhi, India
| | - Anita Chopra
- Department of Laboratory Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Sameer Bakhshi
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India,*Correspondence: Sameer Bakhshi,
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10
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Wiernik PH. Higher than normal mitochondrial DNA content associated with better outcome in acute promyelocytic leukaemia? Maybe. Br J Haematol 2023; 200:126-127. [PMID: 36342482 DOI: 10.1111/bjh.18534] [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: 10/13/2022] [Accepted: 10/16/2022] [Indexed: 11/09/2022]
Abstract
Mitochondrial biology may influence the outcome of therapy for acute promyelocytic leukemia if arsenic trioxide is not part of the treatment. Inclusion of arsenic trioxide in the treatment regimen may cancel the adverse impact of certain mitochondrial abnormalities frequently associated with the disease. Commentary on: Pereira-Martins et al. Clinical significance of mitochondrial DNA content in acute promyelocytic leukaemia. Br J Haematol 2023;200:170-174.
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Affiliation(s)
- Peter H Wiernik
- Cancer Research Foundation of New York, Bronx, New York, USA
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11
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Memon AA, Vats S, Sundquist J, Li Y, Sundquist K. Mitochondrial DNA Copy Number: Linking Diabetes and Cancer. Antioxid Redox Signal 2022; 37:1168-1190. [PMID: 36169625 DOI: 10.1089/ars.2022.0100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent Advances: Various studies have suggested that mitochondrial DNA copy number (mtDNA-CN), a surrogate biomarker of mitochondrial dysfunction, is an easily quantifiable biomarker for chronic diseases, including diabetes and cancer. However, current knowledge is limited, and the results are controversial. This has been attributed mainly to methodology and study design. Critical Issues: The incidence of diabetes and cancer has increased significantly in recent years. Moreover, type 2 diabetes (T2D) has been shown to be a risk factor for cancer. mtDNA-CN has been associated with both T2D and cancer. However, it is not known whether mtDNA-CN plays any role in the association between T2D and cancer. Significance: In this review, we have discussed mtDNA-CN in diabetes and cancer, and reviewed the literature and methodology used in published studies so far. Based on the literature review, we have speculated how mtDNA-CN may act as a link between diabetes and cancer. Furthermore, we have provided some recommendations for reliable translation of mtDNA-CN as a biomarker. Future Directions: Further research is required to elucidate the role of mtDNA-CN in the association between T2D and cancer. If established, early lifestyle interventions, such as physical activity and diet control that improve mitochondrial function, may help preventing cancer in patients with T2D. Antioxid. Redox Signal. 37, 1168-1190.
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Affiliation(s)
- Ashfaque A Memon
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Sakshi Vats
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Jan Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Yanni Li
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
| | - Kristina Sundquist
- Center for Primary Health Care Research, Lund University/Region Skåne, Malmö, Sweden
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12
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Shi H, Gao L, Zhang W, Jiang M. Identification and validation of a siglec-based and aging-related 9-gene signature for predicting prognosis in acute myeloid leukemia patients. BMC Bioinformatics 2022; 23:284. [PMID: 35854240 PMCID: PMC9295398 DOI: 10.1186/s12859-022-04841-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/12/2022] [Indexed: 12/21/2022] Open
Abstract
Background Acute myeloid leukemia (AML) is a group of highly heterogenous and aggressive blood cancer. Despite recent progress in its diagnosis and treatment, patient outcome is variable and drug resistance results in increased mortality. The siglec family plays an important role in tumorigenesis and aging. Increasing age is a risk factor for AML and cellular aging contributes to leukemogenesis via various pathways. Methods The differential expression of the siglec family was compared between 151 AML patients and 70 healthy controls, with their information downloaded from TCGA and GTEx databases, respectively. How siglec expression correlated to AML patient clinical features, immune cell infiltration, drug resistance and survival outcome was analyzed. Differentially expressed genes in AML patients with low- and high-expressed siglec9 and siglec14 were analyzed and functionally enriched. The aging-related gene set was merged with the differentially expressed genes in AML patients with low and high expression of siglec9, and merged genes were subjected to lasso regression analysis to construct a novel siglec-based and aging-related prognostic model. The prediction model was validated using a validation cohort from GEO database (GSE106291). Results The expression levels of all siglec members were significantly altered in AML. The expression of siglecs was significantly correlated with AML patient clinical features, immune cell infiltration, drug resistance, and survival outcome. Based on the differentially expressed genes and aging-related gene set, we developed a 9-gene prognostic model and decision curve analysis revealed the net benefit generated by our prediction model. The siglec-based and aging-related 9-gene prognostic model was tested using a validation data set, in which AML patients with higher risk scores had significantly reduced survival probability. Time-dependent receiver operating characteristic curve and nomogram were plotted and showed the diagnostic accuracy and predictive value of our 9-gene prognostic model, respectively. Conclusions Overall, our study indicates the important role of siglec family in AML and the good performance of our novel siglec-based and aging-related 9-gene signature in predicting AML patient outcome. Supplementary Information The online version contains supplementary material available at 10.1186/s12859-022-04841-5.
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Affiliation(s)
- Huiping Shi
- Soochow University Medical College, Suzhou, Jiangsu, People's Republic of China
| | - Liang Gao
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, Jiangsu, People's Republic of China
| | - Weili Zhang
- Department of Gastroenterology, Xiangcheng People's Hospital, Suzhou, 215131, People's Republic of China.
| | - Min Jiang
- Department of Oncology, The First Affiliated Hospital of Soochow University, Suzhou, 215006, People's Republic of China.
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13
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Chaudhary S, Ganguly S, Singh A, Palanichamy JK, Bakhshi R, Chopra A, Bakhshi S. Mitochondrial biogenesis gene POLG correlates with outcome in pediatric acute myeloid leukemia. Leuk Lymphoma 2022; 63:1005-1008. [PMID: 35075976 DOI: 10.1080/10428194.2021.2010063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Shilpi Chaudhary
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Shuvadeep Ganguly
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Archna Singh
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | | | - Radhika Bakhshi
- Shaheed Rajguru College of Applied Sciences for Women, University of Delhi, Delhi, India
| | - Anita Chopra
- Department of Laboratory Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Sameer Bakhshi
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
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Arance E, Ramírez V, Rubio-Roldan A, Ocaña-Peinado FM, Romero-Cachinero C, Jódar-Reyes AB, Vazquez-Alonso F, Martinez-Gonzalez LJ, Alvarez-Cubero MJ. Determination of Exosome Mitochondrial DNA as a Biomarker of Renal Cancer Aggressiveness. Cancers (Basel) 2021; 14:cancers14010199. [PMID: 35008363 PMCID: PMC8750318 DOI: 10.3390/cancers14010199] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 01/12/2023] Open
Abstract
Simple Summary Components of liquid biopsy are potential non-invasive biomarkers for monitoring renal cell carcinoma (RCC) status. The aim of our study was to examine mitochondrial genes (such as HV1 and CYB) included in exosomal fractions as promising and innovative biomarkers in RCC. We found that phase C containing different types of vesicles and phase F rich in exosomes with a high mitochondrial DNA (mtDNA) content could be considered as powerful biomarkers for susceptibility to RCC. Interestingly, mtDNA was a good genetic marker when aggressiveness was evaluated. Abstract Here, the role of non-invasive biomarkers in liquid biopsy was evaluated, mainly in exosomes and mitochondrial DNA (mtDNA) as promising, novel, and stable biomarkers for renal cell carcinoma (RCC). A total of 140 fractions (named from B to F) obtained by ultracentrifugations of whole blood samples from 28 individuals (13 patients and 15 controls) were included. Nanoparticle Tracking Analysis (NTA) was conducted to characterized exosomal fraction. Subsequently, an analysis of digital PCR (dPCR) using the QuantStudio™ 3D Digital PCR platform was performed and the quantification of mtDNA copy number by QuantStudioTM 12K Flex Real-Time PCR System (qPCR) was developed. Moreover, Next Generation Sequencing (NGS) analyses were included using MiSeq system (Illumina, San Diego, CA, USA). An F fraction, which contains all exosome data and all mitochondrial markers, was identified in dPCR and qPCR with statistically significant power (adjusted p values ≤ 0.03) when comparing cases and controls. Moreover, present analysis in mtDNA showed a relevant significance in RCC aggressiveness. To sum up, this is the first time a relation between exosomal mtDNA markers and clinical management of RCC is analyzed. We suggest a promising strategy for future liquid biopsy RCC analysis, although more analysis should be performed prior to application in routine clinical practice.
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Affiliation(s)
- Elena Arance
- GENYO. Centre for Genomics and Oncological Research, Pfizer/University of Granada/Andalusian Regional Government, PTS Granada-Avenida de la Ilustración, 114-18016 Granada, Spain; (E.A.); (V.R.); (A.R.-R.)
| | - Viviana Ramírez
- GENYO. Centre for Genomics and Oncological Research, Pfizer/University of Granada/Andalusian Regional Government, PTS Granada-Avenida de la Ilustración, 114-18016 Granada, Spain; (E.A.); (V.R.); (A.R.-R.)
| | - Alejandro Rubio-Roldan
- GENYO. Centre for Genomics and Oncological Research, Pfizer/University of Granada/Andalusian Regional Government, PTS Granada-Avenida de la Ilustración, 114-18016 Granada, Spain; (E.A.); (V.R.); (A.R.-R.)
| | | | - Catalina Romero-Cachinero
- Nursery Department. University Hospital Virgen de las Nieves, Av. de las Fuerzas Armadas 2, 18014 Granada, Spain;
| | - Ana Belén Jódar-Reyes
- Biocolloid and Fluid Physics Group, Excellence Research Unit Modeling Nature (MNat), Department of Applied Physics, School of Sciences, University of Granada, 18071 Granada, Spain;
| | - Fernando Vazquez-Alonso
- Urology Department, University Hospital Virgen de las Nieves, Av. de las Fuerzas Armadas 2, 18014 Granada, Spain;
| | - Luis Javier Martinez-Gonzalez
- GENYO. Centre for Genomics and Oncological Research, Pfizer/University of Granada/Andalusian Regional Government, PTS Granada-Avenida de la Ilustración, 114-18016 Granada, Spain; (E.A.); (V.R.); (A.R.-R.)
- Correspondence: ; Tel.: +34-958-715-500; Fax: +34-958-637-071
| | - Maria Jesus Alvarez-Cubero
- Department of Biochemistry and Molecular Biology III, Faculty of Medicine, PTS Granada, University of Granada, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs. GRANADA, 18014 Granada, Spain
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15
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Singh R, Jain A, Palanichamy JK, Nag TC, Bakhshi S, Singh A. Ultrastructural changes in cristae of lymphoblasts in acute lymphoblastic leukemia parallel alterations in biogenesis markers. Appl Microsc 2021; 51:20. [PMID: 34964922 PMCID: PMC8716663 DOI: 10.1186/s42649-021-00069-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/18/2021] [Indexed: 11/10/2022] Open
Abstract
We explored the link between mitochondrial biogenesis and mitochondrial morphology using transmission electron microscopy (TEM) in lymphoblasts of pediatric acute lymphoblastic leukemia (ALL) patients and compared these characteristics between tumors and control samples. Gene expression of mitochondrial biogenesis markers was analysed in 23 ALL patients and 18 controls and TEM for morphology analysis was done in 15 ALL patients and 9 healthy controls. The area occupied by mitochondria per cell and the cristae cross-sectional area was observed to be significantly higher in patients than in controls (p-value = 0.0468 and p-value< 0.0001, respectively). The mtDNA copy numbers, TFAM, POLG, and c-myc gene expression were significantly higher in ALL patients than controls (all p-values< 0.01). Gene Expression of PGC-1α was higher in tumor samples. The analysis of the correlation between PGC-1α expression and morphology parameters i.e., both M/C ratio and cristae cross-sectional area revealed a positive trend (r = 0.3, p = 0.1). The increased area occupied by mitochondria and increased cristae area support the occurrence of cristae remodelling in ALL. These changes might reflect alterations in cristae dynamics to support the metabolic state of the cells by forming a more condensed network. Ultrastructural imaging can be useful for affirming changes occurring at a subcellular organellar level.
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Affiliation(s)
- Ritika Singh
- Department of Biochemistry, Teaching Block, All India Institute of Medical Sciences, Room 3044, New Delhi, 110029, India
| | - Ayushi Jain
- Department of Biochemistry, Teaching Block, All India Institute of Medical Sciences, Room 3044, New Delhi, 110029, India
| | - Jayanth Kumar Palanichamy
- Department of Biochemistry, Convergence Block, All India Institute of Medical Sciences, New Delhi, India
| | - T C Nag
- Department of Anatomy, Teaching Block, All India Institute of Medical Sciences, New Delhi, India
| | - Sameer Bakhshi
- Department of Medical Oncology, BRAIRCH, All India Institute of Medical Sciences, New Delhi, India
| | - Archna Singh
- Department of Biochemistry, Teaching Block, All India Institute of Medical Sciences, Room 3044, New Delhi, 110029, India.
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16
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Han QC, Zhang XY, Yan PH, Chen SF, Liu FF, Zhu YR, Tian Q. Identification of mitochondrial RNA polymerase as a potential therapeutic target of osteosarcoma. Cell Death Dis 2021; 7:393. [PMID: 34907167 PMCID: PMC8671410 DOI: 10.1038/s41420-021-00780-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/12/2021] [Accepted: 11/18/2021] [Indexed: 02/07/2023]
Abstract
POLRMT (RNA polymerase mitochondrial) is essential for transcription of mitochondrial genome encoding components of oxidative phosphorylation process. The current study tested POLRMT expression and its potential function in osteosarcoma (OS). The Cancer Genome Atlas (TCGA) cohorts and Gene Expression Profiling Interactive Analysis (GEPIA) database both show that POLRMT transcripts are elevated in OS tissues. In addition, POLRMT mRNA and protein levels were upregulated in local OS tissues as well as in established and primary human OS cells. In different OS cells, shRNA-induced stable knockdown of POLRMT decreased cell viability, proliferation, migration, and invasion, whiling inducing apoptosis activation. CRISPR/Cas9-induced POLRMT knockout induced potent anti-OS cell activity as well. Conversely, in primary OS cells ectopic POLRMT overexpression accelerated cell proliferation and migration. In vivo, intratumoral injection of adeno-associated virus-packed POLRMT shRNA potently inhibited U2OS xenograft growth in nude mice. Importantly, levels of mitochondrial DNA, mitochondrial transcripts and expression of respiratory chain complex subunits were significantly decreased in U2OS xenografts with POLRMT shRNA virus injection. Together, POLRMT is overexpressed in human OS, promoting cell growth in vitro and in vivo. POLRMT could be a novel therapeutic target for OS.
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Affiliation(s)
- Qi-cai Han
- grid.412633.1Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, 450052 Zhengzhou, China
| | - Xiang-yang Zhang
- grid.16821.3c0000 0004 0368 8293Department of Orthopaedics, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peng-hui Yan
- grid.412633.1Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, 450052 Zhengzhou, China
| | - Song-feng Chen
- grid.412633.1Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, 450052 Zhengzhou, China
| | - Fei-fei Liu
- grid.412633.1Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, 450052 Zhengzhou, China
| | - Yun-Rong Zhu
- Department of Orthopedics, Affiliated Jiangyin Hospital of Medical College of Southeast University, Jiangyin, China.
| | - Qing Tian
- Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, China.
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Czegle I, Gray AL, Wang M, Liu Y, Wang J, Wappler-Guzzetta EA. Mitochondria and Their Relationship with Common Genetic Abnormalities in Hematologic Malignancies. Life (Basel) 2021; 11:1351. [PMID: 34947882 PMCID: PMC8707674 DOI: 10.3390/life11121351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/29/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
Hematologic malignancies are known to be associated with numerous cytogenetic and molecular genetic changes. In addition to morphology, immunophenotype, cytochemistry and clinical characteristics, these genetic alterations are typically required to diagnose myeloid, lymphoid, and plasma cell neoplasms. According to the current World Health Organization (WHO) Classification of Tumors of Hematopoietic and Lymphoid Tissues, numerous genetic changes are highlighted, often defining a distinct subtype of a disease, or providing prognostic information. This review highlights how these molecular changes can alter mitochondrial bioenergetics, cell death pathways, mitochondrial dynamics and potentially be related to mitochondrial genetic changes. A better understanding of these processes emphasizes potential novel therapies.
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Affiliation(s)
- Ibolya Czegle
- Department of Internal Medicine and Haematology, Semmelweis University, H-1085 Budapest, Hungary;
| | - Austin L. Gray
- Department of Pathology and Laboratory Medicine, Loma Linda University Health, Loma Linda, CA 92354, USA; (A.L.G.); (Y.L.); (J.W.)
| | - Minjing Wang
- Independent Researcher, Diamond Bar, CA 91765, USA;
| | - Yan Liu
- Department of Pathology and Laboratory Medicine, Loma Linda University Health, Loma Linda, CA 92354, USA; (A.L.G.); (Y.L.); (J.W.)
| | - Jun Wang
- Department of Pathology and Laboratory Medicine, Loma Linda University Health, Loma Linda, CA 92354, USA; (A.L.G.); (Y.L.); (J.W.)
| | - Edina A. Wappler-Guzzetta
- Department of Pathology and Laboratory Medicine, Loma Linda University Health, Loma Linda, CA 92354, USA; (A.L.G.); (Y.L.); (J.W.)
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Zhou T, Sang YH, Cai S, Xu C, Shi MH. The requirement of mitochondrial RNA polymerase for non-small cell lung cancer cell growth. Cell Death Dis 2021; 12:751. [PMID: 34326320 PMCID: PMC8322058 DOI: 10.1038/s41419-021-04039-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 07/15/2021] [Accepted: 07/19/2021] [Indexed: 12/25/2022]
Abstract
POLRMT (RNA polymerase mitochondrial) is responsible for the transcription of mitochondrial genome encoding key components of oxidative phosphorylation. This process is important for cancer cell growth. The current study tested expression and potential functions of POLRMT in non-small cell lung cancer (NSCLC). TCGA cohorts and the results from the local lung cancer tissues showed that POLRMT is overexpressed in human lung cancer tissues. In both primary human NSCLC cells and A549 cells, POLRMT silencing (by targeted lentiviral shRNAs) or knockout (through CRSIPR/Cas9 gene editing method) potently inhibited cell viability, proliferation, migration, and invasion, and induced apoptosis activation. On the contrast, ectopic overexpression of POLRMT using a lentiviral construct accelerated cell proliferation and migration in NSCLC cells. The mtDNA contents, mRNA levels of mitochondrial transcripts, and subunits of respiratory chain complexes, as well as S6 phosphorylation, were decreased in POLRMT-silenced or -knockout NSCLC cells, but increased after ectopic POLRMT overexpression. In vivo, intratumoral injection of POLRMT shRNA adeno-associated virus (AAV) potently inhibited NSCLC xenograft growth in severe combined immune deficiency mice. The mtDNA contents, mRNA levels of mitochondria respiratory chain complex subunits, and S6 phosphorylation were decreased in POLRMT shRNA AAV-injected NSCLC xenograft tissues. These results show that POLRMT is a novel and important oncogene required for NSCLC cell growth in vitro and in vivo.
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Affiliation(s)
- Tong Zhou
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Yong-Hua Sang
- Department of Thoracic Surgery, The Second affiliated Hospital of Soochow University, Suzhou, China
| | - Shang Cai
- Department of Radiotherapy and Oncology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Chun Xu
- Department of Cardio-Thoracic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China.
| | - Min-Hua Shi
- Department of Respiratory and Critical Care Medicine, The Second Affiliated Hospital of Soochow University, Suzhou, China.
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