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Lin Y, Pu S, Wang J, Wan Y, Wu Z, Guo Y, Feng W, Ying Y, Ma S, Meng XJ, Wang W, Liu L, Xia Q, Yang X. Pancreatic STAT5 activation promotes Kras G12D-induced and inflammation-induced acinar-to-ductal metaplasia and pancreatic cancer. Gut 2024:gutjnl-2024-332225. [PMID: 38955401 DOI: 10.1136/gutjnl-2024-332225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 06/21/2024] [Indexed: 07/04/2024]
Abstract
OBJECTIVE Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal malignancy because it is often diagnosed at a late-stage. Signal transducer and activator of transcription 5 (STAT5) is a transcription factor implicated in the progression of various cancer types. However, its role in KRAS-driven pancreatic tumourigenesis remains unclear. DESIGN We performed studies with LSL-Kras G12D; Ptf1a-Cre ERT (KCERT) mice or LSL-KrasG12D; LSL-Trp53R172H ; Pdx1-Cre (KPC) mice crossed with conditional disruption of STAT5 or completed deficiency interleukin (IL)-22. Pancreatitis was induced in mice by administration of cerulein. Pharmacological inhibition of STAT5 on PDAC prevention was studied in the orthotopic transplantation and patient-derived xenografts PDAC model, and KPC mice. RESULTS The expression and phosphorylation of STAT5 were higher in human PDAC samples than control samples and high levels of STAT5 in tumour cells were associated with a poorer prognosis. The loss of STAT5 in pancreatic cells substantially reduces the KRAS mutation and pancreatitis-derived acinar-to-ductal metaplasia (ADM) and PDAC lesions. Mechanistically, we discovered that STAT5 binds directly to the promoters of ADM mediators, hepatocyte nuclear factor (HNF) 1β and HNF4α. Furthermore, STAT5 plays a crucial role in maintaining energy metabolism in tumour cells during PDAC progression. IL-22 signalling induced by chronic inflammation enhances KRAS-mutant-mediated STAT5 phosphorylation. Deficiency of IL-22 signalling slowed the progression of PDAC and ablated STAT5 activation. CONCLUSION Collectively, our findings identified pancreatic STAT5 activation as a key downstream effector of oncogenic KRAS signalling that is critical for ADM initiation and PDAC progression, highlighting its potential therapeutic vulnerability.
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Affiliation(s)
- Yuli Lin
- Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, Shanghai, China
- Center for Medical Research and Innovation, Shanghai Pudong Hospital; Department of Immunology, Shanghai Medical College, Fudan University, Shanghai, Shanghai, People's Republic of China
| | - Shaofeng Pu
- Pain Management Center, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, Shanghai, China
| | - Jun Wang
- Department of general surgery, Huashan Hospital, Fudan University, Shanghai, Shanghai, China
| | - Yaqi Wan
- Center for Medical Research and Innovation, Shanghai Pudong Hospital; Department of Immunology, Shanghai Medical College, Fudan University, Shanghai, Shanghai, People's Republic of China
| | - Zhihao Wu
- Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, Shanghai, China
| | - Yangyang Guo
- Center for Medical Research and Innovation, Shanghai Pudong Hospital; Department of Immunology, Shanghai Medical College, Fudan University, Shanghai, Shanghai, People's Republic of China
| | - Wenxue Feng
- Center for Medical Research and Innovation, Shanghai Pudong Hospital; Department of Immunology, Shanghai Medical College, Fudan University, Shanghai, Shanghai, People's Republic of China
| | - Ying Ying
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai, Shanghai, China
| | - Shuai Ma
- Division of Nephrology, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China
| | - Xiang Jun Meng
- Department of Gastroenterology, Center for Digestive Diseases Research and Clinical Translation, Shanghai Key Laboratory of Gut Microecology and Associated Major Diseases Research, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, Shanghai, China
| | - Wenquan Wang
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai, Shanghai, China
| | - Liang Liu
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai, Shanghai, China
| | - Qing Xia
- Department of Biliary-Pancreatic Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, Shanghai, China
| | - Xuguang Yang
- Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, Shanghai, China
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Niu N, Shen X, Wang Z, Chen Y, Weng Y, Yu F, Tang Y, Lu P, Liu M, Wang L, Sun Y, Yang M, Shen B, Jin J, Lu Z, Jiang K, Shi Y, Xue J. Tumor cell-intrinsic epigenetic dysregulation shapes cancer-associated fibroblasts heterogeneity to metabolically support pancreatic cancer. Cancer Cell 2024; 42:869-884.e9. [PMID: 38579725 DOI: 10.1016/j.ccell.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 02/01/2024] [Accepted: 03/11/2024] [Indexed: 04/07/2024]
Abstract
The tumor microenvironment (TME) in pancreatic ductal adenocarcinoma (PDAC) involves a significant accumulation of cancer-associated fibroblasts (CAFs) as part of the host response to tumor cells. The origins and functions of transcriptionally diverse CAF populations in PDAC remain poorly understood. Tumor cell-intrinsic genetic mutations and epigenetic dysregulation may reshape the TME; however, their impacts on CAF heterogeneity remain elusive. SETD2, a histone H3K36 trimethyl-transferase, functions as a tumor suppressor. Through single-cell RNA sequencing, we identify a lipid-laden CAF subpopulation marked by ABCA8a in Setd2-deficient pancreatic tumors. Our findings reveal that tumor-intrinsic SETD2 loss unleashes BMP2 signaling via ectopic gain of H3K27Ac, leading to CAFs differentiation toward lipid-rich phenotype. Lipid-laden CAFs then enhance tumor progression by providing lipids for mitochondrial oxidative phosphorylation via ABCA8a transporter. Together, our study links CAF heterogeneity to epigenetic dysregulation in tumor cells, highlighting a previously unappreciated metabolic interaction between CAFs and pancreatic tumor cells.
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Affiliation(s)
- Ningning Niu
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuqing Shen
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zheng Wang
- Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yueyue Chen
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yawen Weng
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Feier Yu
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingying Tang
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ping Lu
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mingzhu Liu
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liwei Wang
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yongwei Sun
- Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Minwei Yang
- Department of Biliary-Pancreatic Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Baiyong Shen
- Department of General Surgery, Pancreatic Disease Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiabin Jin
- Department of General Surgery, Pancreatic Disease Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Diseases, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zipeng Lu
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Kuirong Jiang
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Yufeng Shi
- Clinical Center for Brain and Spinal Cord Research, Tongji University, Shanghai, China
| | - Jing Xue
- State Key Laboratory of Systems Medicine for Cancer, Stem Cell Research Center, Ren Ji Hospital, Shanghai Cancer Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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3
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Parte S, Kaur AB, Nimmakayala RK, Ogunleye AO, Chirravuri R, Vengoji R, Leon F, Nallasamy P, Rauth S, Alsafwani ZW, Lele S, Cox JL, Bhat I, Singh S, Batra SK, Ponnusamy MP. Cancer-Associated Fibroblast Induces Acinar-to-Ductal Cell Transdifferentiation and Pancreatic Cancer Initiation Via LAMA5/ITGA4 Axis. Gastroenterology 2024; 166:842-858.e5. [PMID: 38154529 DOI: 10.1053/j.gastro.2023.12.018] [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: 04/26/2023] [Revised: 12/09/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND & AIMS Pancreatic ductal adenocarcinoma (PDAC) is characterized by desmoplastic stroma surrounding most tumors. Activated stromal fibroblasts, namely cancer-associated fibroblasts (CAFs), play a major role in PDAC progression. We analyzed whether CAFs influence acinar cells and impact PDAC initiation, that is, acinar-to-ductal metaplasia (ADM). ADM connection with PDAC pathophysiology is indicated, but not yet established. We hypothesized that CAF secretome might play a significant role in ADM in PDAC initiation. METHODS Mouse and human acinar cell organoids, acinar cells cocultured with CAFs and exposed to CAF-conditioned media, acinar cell explants, and CAF cocultures were examined by means of quantitative reverse transcription polymerase chain reaction, RNA sequencing, immunoblotting, and confocal microscopy. Data from liquid chromatography with tandem mass spectrometry analysis of CAF-conditioned medium and RNA sequencing data of acinar cells post-conditioned medium exposure were integrated using bioinformatics tools to identify the molecular mechanism for CAF-induced ADM. Using confocal microscopy, immunoblotting, and quantitative reverse transcription polymerase chain reaction analysis, we validated the depletion of a key signaling axis in the cell line, acinar explant coculture, and mouse cancer-associated fibroblasts (mCAFs). RESULTS A close association of acino-ductal markers (Ulex europaeus agglutinin 1, amylase, cytokeratin-19) and mCAFs (α-smooth muscle actin) in LSL-KrasG12D/+; LSL-Trp53R172H/+; Pdx1Cre (KPC) and LSL-KrasG12D/+; Pdx1Cre (KC) autochthonous progression tumor tissue was observed. Caerulein treatment-induced mCAFs increased cytokeratin-19 and decreased amylase in wild-type and KC pancreas. Likewise, acinar-mCAF cocultures revealed the induction of ductal transdifferentiation in cell line, acinar-organoid, and explant coculture formats in WT and KC mice pancreas. Proteomic and transcriptomic data integration revealed a novel laminin α5/integrinα4/stat3 axis responsible for CAF-mediated acinar-to-ductal cell transdifferentiation. CONCLUSIONS Results collectively suggest the first evidence for CAF-influenced acino-ductal phenotypic switchover, thus highlighting the tumor microenvironment role in pancreatic carcinogenesis inception.
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Affiliation(s)
- Seema Parte
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Annant B Kaur
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Rama Krishna Nimmakayala
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Ayoola O Ogunleye
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Ramakanth Chirravuri
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Raghupathy Vengoji
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Frank Leon
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Palanisamy Nallasamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Sanchita Rauth
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Zahraa Wajih Alsafwani
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Subodh Lele
- Department of Pathology and Microbiology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Jesse L Cox
- Department of Pathology and Microbiology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Ishfaq Bhat
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Nebraska Medical Center at Omaha, Omaha, Nebraksa
| | - Shailender Singh
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Nebraska Medical Center at Omaha, Omaha, Nebraksa
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska; Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center at Omaha, Omaha, Nebraska.
| | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska; Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center at Omaha, Omaha, Nebraska.
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Yang S, Liu Y, Tang C, Han A, Lin Z, Quan J, Yang Y. The CPT1A/Snail axis promotes pancreatic adenocarcinoma progression and metastasis by activating the glycolytic pathway. iScience 2023; 26:107869. [PMID: 37736047 PMCID: PMC10509355 DOI: 10.1016/j.isci.2023.107869] [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: 04/26/2023] [Revised: 08/10/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023] Open
Abstract
Recent studies have demonstrated that CPT1A plays a critical role in tumor metabolism and progression. However, the molecular mechanisms by which CPT1A affects tumorigenicity during PAAD progression remain unclear. In the current research, the bioinformatics analysis and immunohistochemical staining results showed that CPT1A was overexpressed in PAAD tissues and that its overexpression was associated with a shorter survival time in patients with PAAD. Overexpression of CPT1A increased cell proliferation and promoted EMT and glycolytic metabolism in PAAD cells. Mechanistically, CPT1A is able to bind to Snail and facilitate PAAD progression by regulating Snail stability. In summary, our findings revealed Snail-dependent glycolysis as a crucial metabolic pathway by which CPT1A accelerates PAAD progression. Targeting the CPT1A/Snail/glycolysis axis in PAAD to suppress cell proliferation and metastatic dissemination is a new potential treatment strategy to improve the anticancer therapeutic effect and prolong patient survival.
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Affiliation(s)
- Shipeng Yang
- Central Laboratory, The Affiliated Hospital of Yanbian University, Yanji 133000, China
- Key Laboratory of Tumor Pathobiology (Yanbian University), State Ethnic Affairs, Commission, Yanji 133000, China
- Department of Pathology, Yanbian University Medical College, Yanji 133000, China
| | - Ying Liu
- Key Laboratory of Tumor Pathobiology (Yanbian University), State Ethnic Affairs, Commission, Yanji 133000, China
| | - Chunxiao Tang
- Key Laboratory of Tumor Pathobiology (Yanbian University), State Ethnic Affairs, Commission, Yanji 133000, China
| | - Anna Han
- Key Laboratory of Tumor Pathobiology (Yanbian University), State Ethnic Affairs, Commission, Yanji 133000, China
| | - Zhenhua Lin
- Central Laboratory, The Affiliated Hospital of Yanbian University, Yanji 133000, China
- Key Laboratory of Tumor Pathobiology (Yanbian University), State Ethnic Affairs, Commission, Yanji 133000, China
| | - Jishu Quan
- Key Laboratory of Tumor Pathobiology (Yanbian University), State Ethnic Affairs, Commission, Yanji 133000, China
| | - Yang Yang
- Central Laboratory, The Affiliated Hospital of Yanbian University, Yanji 133000, China
- Key Laboratory of Tumor Pathobiology (Yanbian University), State Ethnic Affairs, Commission, Yanji 133000, China
- Department of Pathology, Yanbian University Medical College, Yanji 133000, China
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5
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Deng J, Pan T, Lv C, Cao L, Li L, Zhou X, Li G, Li H, Vicencio JM, Xu Y, Wei F, Wang Y, Liu Z, Zhou G, Yin M. Exosomal transfer leads to chemoresistance through oxidative phosphorylation-mediated stemness phenotype in colorectal cancer. Theranostics 2023; 13:5057-5074. [PMID: 37771767 PMCID: PMC10526671 DOI: 10.7150/thno.84937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 08/10/2023] [Indexed: 09/30/2023] Open
Abstract
Background: Recently years have seen the increasing evidence identifying that OXPHOS is involved in different processes of tumor progression and metastasis and has been proposed to be a potential therapeutical target for cancer treatment. However, the exploration in oxidative phosphorylation-mediated chemoresistance is still scarce. In our study, we identify exosomal transfer leads to chemoresistance by reprogramming metabolic phenotype in recipient cells. Methods: RNA sequencing analysis was used to screen altered targets mediating exosome transfer-induced chemoresistance. Seahorse assay allowed us to measure mitochondrial respiration. Stemness was measured by spheroids formation assay. Serum exosomes were isolated for circ_0001610 quantification. Results: The induced oxidative phosphorylation leads to more stem-like properties, which is dependent on the transfer of exosomal circ_0001610. Exosome transfer results in the removal of miR-30e-5p-mediated suppression of PGC-1a, a master of mitochondrial biogenesis and function. Consequently, increased PGC-1a reshapes cellular metabolism towards oxidative phosphorylation, leading to chemoresistance. Inhibition of OXPHOS or exosomal si-circ_0001610 increases the sensitivity of chemotherapy by decreasing cell stemness in vitro and in vivo. Conclusion: Our data suggests that exosomal circ_0001610-induced OXPHOS plays an important role in chemoresistance and supports a therapeutical potential of circ_0001610 inhibitors in the treatment of oxaliplatin-resistant colorectal cancer by manipulating cell stemness.
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Affiliation(s)
- Jinhai Deng
- Clinical Research Center (CRC), Medical Pathology Center (MPC), Cancer Early Detection and Treatment Center (CEDTC), Translational Medicine Research Center (TMRC), Chongqing University Three Gorges Hospital, Chongqing University, Wanzhou, Chongqing, China
- Hunan Zixing Intelligent Medical Technology Co., Ltd., Changsha 410221, China
- Richard Dimbleby Laboratory of Cancer Research, School of Cancer & Pharmaceutical Sciences, King's College London, London SE1 1UL, UK
| | - Teng Pan
- Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen 518172, China
| | - Chunxin Lv
- Oncology Department, Punan Hospital of Pudong New District, Shanghai 200125, China
| | - Lulu Cao
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100191, PR China
| | - Lifeng Li
- Internet Medical and System Applications of National Engineering Laboratory, Zhengzhou, China
| | - Xingang Zhou
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Gang Li
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - Huanxin Li
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Jose M Vicencio
- Cancer Institute, Paul O'Gorman Building, University College London, London, UK
| | - Yihan Xu
- Richard Dimbleby Laboratory of Cancer Research, School of Cancer & Pharmaceutical Sciences, King's College London, London SE1 1UL, UK
| | - Fengxiang Wei
- Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen 518172, China
| | - Yazhou Wang
- Chongqing University Medical School, Chongqing 400044, China
| | - Zaoqu Liu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Guanglin Zhou
- Longgang District Maternity & Child Healthcare Hospital of Shenzhen City (Longgang Maternity and Child Institute of Shantou University Medical College), Shenzhen 518172, China
| | - Mingzhu Yin
- Clinical Research Center (CRC), Medical Pathology Center (MPC), Cancer Early Detection and Treatment Center (CEDTC), Translational Medicine Research Center (TMRC), Chongqing University Three Gorges Hospital, Chongqing University, Wanzhou, Chongqing, China
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Palma AM, Bushnell GG, Wicha MS, Gogna R. Tumor microenvironment interactions with cancer stem cells in pancreatic ductal adenocarcinoma. Adv Cancer Res 2023; 159:343-372. [PMID: 37268400 PMCID: PMC11218813 DOI: 10.1016/bs.acr.2023.02.007] [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] [Indexed: 06/04/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is the most common type of pancreatic cancer in the United States. Additionally, the low survival rate makes PDAC the third-leading cause of cancer-related mortality in the United States, and it is projected that by 2030, it will become the second-leading cause of cancer mortality. Several biological factors contribute to PDAC aggressiveness, and their understanding will narrow the gap from biology to clinical care of PDAC, leading to earlier diagnoses and the development of better treatment options. In this review, we describe the origins of PDAC highlighting the role of cancer stem cells (CSC). CSC, also known as tumor initiating cells, which exhibit a unique metabolism that allows them to maintain a highly plastic, quiescent, immune- and therapy-evasive state. However, CSCs can exit quiescence during proliferation and differentiation, with the capacity to form tumors while constituting a small population in tumor tissues. Tumorigenesis depends on the interactions between CSCs and other cellular and non-cellular components in the microenvironment. These interactions are fundamental to support CSC stemness and are maintained throughout tumor development and metastasis. PDAC is characterized by a massive desmoplastic reaction, which result from the deposition of high amounts of extracellular matrix components by stromal cells. Here we review how this generates a favorable environment for tumor growth by protecting tumor cells from immune responses and chemotherapy and inducing tumor cell proliferation and migration, leading to metastasis formation ultimately leading to death. We emphasize the interactions between CSCs and the tumor microenvironment leading to metastasis formation and posit that better understanding and targeting of these interactions will improve patient outcomes.
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Affiliation(s)
| | - Grace G Bushnell
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States
| | - Max S Wicha
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, United States.
| | - Rajan Gogna
- VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; Department of Human and Molecular Genetics, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States; VCU Institute of Molecular Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA, United States.
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7
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Qiu X, Li Y, Zhang Z. Crosstalk between oxidative phosphorylation and immune escape in cancer: a new concept of therapeutic targets selection. Cell Oncol (Dordr) 2023:10.1007/s13402-023-00801-0. [PMID: 37040057 DOI: 10.1007/s13402-023-00801-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2023] [Indexed: 04/12/2023] Open
Abstract
BACKGROUND Cancer is increasingly recognized as a metabolic disease, with evidence suggesting that oxidative phosphorylation (OXPHOS) plays a significant role in the progression of numerous cancer cells. OXPHOS not only provides sufficient energy for tumor tissue survival but also regulates conditions for tumor proliferation, invasion, and metastasis. Alterations in OXPHOS can also impair the immune function of immune cells in the tumor microenvironment, leading to immune evasion. Therefore, investigating the relationship between OXPHOS and immune escape is crucial in cancer-related research. This review aims to summarize the effects of transcriptional, mitochondrial genetic, metabolic regulation, and mitochondrial dynamics on OXPHOS in different cancers. Additionally, it highlights the role of OXPHOS in immune escape by affecting various immune cells. Finally, it concludes with an overview of recent advances in antitumor strategies targeting both immune and metabolic processes and proposes promising therapeutic targets by analyzing the limitations of current targeted drugs. CONCLUSIONS The metabolic shift towards OXPHOS contributes significantly to tumor proliferation, progression, metastasis, immune escape, and poor prognosis. A thorough investigation of concrete mechanisms of OXPHOS regulation in different types of tumors and the combination usage of OXPHOS-targeted drugs with existing immunotherapies could potentially uncover new therapeutic targets for future antitumor therapies.
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Affiliation(s)
- Xutong Qiu
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China
- Department of Head and Neck Cancer Surgery, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Yi Li
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China
- Department of Head and Neck Cancer Surgery, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Zhuoyuan Zhang
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China.
- Department of Head and Neck Cancer Surgery, West China School of Stomatology, Sichuan University, Chengdu, China.
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8
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Liu AR, Lv Z, Yan ZW, Wu XY, Yan LR, Sun LP, Yuan Y, Xu Q. Association of mitochondrial homeostasis and dynamic balance with malignant biological behaviors of gastrointestinal cancer. J Transl Med 2023; 21:27. [PMID: 36647167 PMCID: PMC9843870 DOI: 10.1186/s12967-023-03878-1] [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: 09/18/2022] [Accepted: 01/07/2023] [Indexed: 01/18/2023] Open
Abstract
Mitochondria determine the physiological status of most eukaryotes. Mitochondrial dynamics plays an important role in maintaining mitochondrial homeostasis, and the disorder in mitochondrial dynamics could affect cellular energy metabolism leading to tumorigenesis. In recent years, disrupted mitochondrial dynamics has been found to influence the biological behaviors of gastrointestinal cancer with the potential to be a novel target for its individualized therapy. This review systematically introduced the role of mitochondrial dynamics in maintaining mitochondrial homeostasis, and further elaborated the effects of disrupted mitochondrial dynamics on the cellular biological behaviors of gastrointestinal cancer as well as its association with cancer progression. We aim to provide clues for elucidating the etiology and pathogenesis of gastrointestinal cancer from the perspective of mitochondrial homeostasis and disorder.
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Affiliation(s)
- Ao-ran Liu
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Zhi Lv
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Zi-wei Yan
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Xiao-yang Wu
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Li-rong Yan
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Li-ping Sun
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Yuan Yuan
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
| | - Qian Xu
- grid.412636.40000 0004 1757 9485Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, No. 155 North NanjingBei Street, Heping District, Shenyang, 110001 Liaoning People’s Republic of China ,grid.412636.40000 0004 1757 9485Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001 China ,grid.412636.40000 0004 1757 9485Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001 China
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9
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Nimmakayala RK, Ogunleye AO, Parte S, Krishna Kumar N, Raut P, Varadharaj V, Perumal NK, Nallasamy P, Rauth S, Cox JL, Lele SM, Batra SK, Ponnusamy MP. PAF1 cooperates with YAP1 in metaplastic ducts to promote pancreatic cancer. Cell Death Dis 2022; 13:839. [PMID: 36180487 PMCID: PMC9525575 DOI: 10.1038/s41419-022-05258-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 11/05/2022]
Abstract
Acinar-to-ductal metaplasia (ADM) is a precursor lesion of pancreatic ductal adenocarcinoma (PDAC); however, the regulators of the ADM-mediated PDAC development and its targeting are poorly understood. RNA polymerase II-associated factor 1 (PAF1) maintains cancer stem cells leading to the aggressiveness of PDAC. In this study, we investigated whether PAF1 is required for the YAP1-mediated PDAC development and whether CA3 and verteporfin, small molecule inhibitors of YAP1/TEAD transcriptional activity, diminish pancreatic cancer (PC) cell growth by targeting the PAF1/YAP1 axis. Here, we demonstrated that PAF1 co-expresses and interacts with YAP1 specifically in metaplastic ducts of mouse cerulein- or KrasG12D-induced ADM and human PDAC but not in the normal pancreas. PAF1 knockdown (KD) reduced SOX9 in PC cells, and the PC cells showed elevated PAF1/YAP1 complex recruitment to the promoter of SOX9. The PAF1 KD reduced the 8xTEAD and SOX9 promoter-luciferase reporter activities in the mouse KC (KrasG12D; Pdx-1 Cre) cells and human PC cells, indicating that the PAF1 is required for the YAP1-mediated development of ADM and PC. Moreover, treatment with CA3 or verteporfin reduced the expressions of PAF1, YAP1, TEAD4, and SOX9 and decreased colony formation and stemness in KC and PC cells. CA3 treatment also reduced the viability and proliferation of PC cells and diminished the duct-like structures in KC acinar explants. CA3 or verteporfin treatment decreased the recruitment of the PAF1/YAP1 complex to the SOX9 promoter in PC cells and reduced the 8xTEAD and SOX9 promoter-luciferase reporter activities in KC and PC cells. Overall, PAF1 cooperates with YAP1 during ADM and PC development, and verteporfin and CA3 inhibit ADM and PC cell growth by targeting the PAF1/YAP1/SOX9 axis in vitro and ex vivo models. This study identified a regulatory axis of PDAC initiation and its targeting, paving the way for developing targeted therapeutic strategies for pancreatic cancer patients.
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Affiliation(s)
- Rama Krishna Nimmakayala
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Ayoola O Ogunleye
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Seema Parte
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Nivedeta Krishna Kumar
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Pratima Raut
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Venkatesh Varadharaj
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Naveen Kumar Perumal
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Palanisamy Nallasamy
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Sanchita Rauth
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Jesse L Cox
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Subodh M Lele
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA.
| | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
- Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA.
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10
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Tamai K, Fujimori H, Mochizuki M, Satoh K. Cancer Stem Cells in Intrahepatic Cholangiocarcinoma; Their Molecular Basis, and Therapeutic Implications. Front Physiol 2022; 12:824261. [PMID: 35111082 PMCID: PMC8801575 DOI: 10.3389/fphys.2021.824261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/28/2021] [Indexed: 11/13/2022] Open
Abstract
Cancer tissue consists of heterogenous cell types, and cancer stem cells (CSCs) are a subpopulation of the tissue which possess therapy resistance, tumor reconstruction capability, and are responsible for metastasis. Intrahepatic cholangiocarcinoma (iCCA) is one of the most common type of liver cancer that is highly aggressive with poor prognosis. Since no target therapy is efficient in improving patient outcomes, new therapeutic approaches need to be developed. CSC is thought to be a promising therapeutic target because of its resistance to therapy. Accumulating evidences suggests that there are many factors (surface marker, stemness-related genes, etc.) and mechanisms (epithelial-mesenchymal transition, mitochondria activity, etc.) which are linked to CSC-like phenotypes. Nevertheless, limited studies are reported about the application of therapy using these mechanisms, suggesting that more precise understandings are still needed. In this review, we overview the molecular mechanisms which modulate CSC-like phenotypes, and discuss the future perspective for targeting CSC in iCCA.
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Affiliation(s)
- Keiichi Tamai
- Division of Cancer Stem Cells, Miyagi Cancer Center Research Institute, Natori, Japan
- *Correspondence: Keiichi Tamai,
| | - Haruna Fujimori
- Division of Cancer Stem Cells, Miyagi Cancer Center Research Institute, Natori, Japan
| | - Mai Mochizuki
- Division of Cancer Stem Cells, Miyagi Cancer Center Research Institute, Natori, Japan
| | - Kennichi Satoh
- Division of Gastroenterology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
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11
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Parte S, Nimmakayala RK, Batra SK, Ponnusamy MP. Acinar to ductal cell trans-differentiation: A prelude to dysplasia and pancreatic ductal adenocarcinoma. Biochim Biophys Acta Rev Cancer 2022; 1877:188669. [PMID: 34915061 DOI: 10.1016/j.bbcan.2021.188669] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 12/14/2022]
Abstract
Pancreatic cancer (PC) is the deadliest neoplastic epithelial malignancies and is projected to be the second leading cause of cancer-related mortality by 2024. Five years overall survival being ~10%, mortality and incidence rates are disturbing. Acinar to ductal cell metaplasia (ADM) encompasses cellular reprogramming and phenotypic switch-over, making it a cardinal event in tumor initiation. Differential cues and varied regulatory factors drive synchronous functions of metaplastic cell populations leading to multiple cell fates and physiological outcomes. ADM is a precursor for developing early pre-neoplastic lesions further progressing into PC due to oncogenic signaling. Hence delineating molecular events guiding tumor initiation may provide cues for regenerative medicine and precision onco-medicine. Therefore, understanding PC pathogenesis and early diagnosis are crucial. We hereby provide a timely overview of the current progress in this direction and future perspectives we foresee unfolding in the best interest of patient well-being and better clinical management of PC.
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Affiliation(s)
- Seema Parte
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA
| | - Rama Krishna Nimmakayala
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA; Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA.
| | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA; Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA.
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12
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Boulton DP, Caino MC. Mitochondrial Fission and Fusion in Tumor Progression to Metastasis. Front Cell Dev Biol 2022; 10:849962. [PMID: 35356277 PMCID: PMC8959575 DOI: 10.3389/fcell.2022.849962] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/24/2022] [Indexed: 12/11/2022] Open
Abstract
Mitochondria are highly dynamic organelles which can change their shape, via processes termed fission and fusion, in order to adapt to different environmental and developmental contexts. Due to the importance of these processes in maintaining a physiologically healthy pool of mitochondria, aberrant cycles of fission/fusion are often seen in pathological contexts. In this review we will discuss how dysregulated fission and fusion promote tumor progression. We focus on the molecular mechanisms involved in fission and fusion, discussing how altered mitochondrial fission and fusion change tumor cell growth, metabolism, motility, and invasion and, finally how changes to these tumor-cell intrinsic phenotypes directly and indirectly impact tumor progression to metastasis. Although this is an emerging field of investigation, the current consensus is that mitochondrial fission positively influences metastatic potential in a broad variety of tumor types. As mitochondria are now being investigated as vulnerable targets in a variety of cancer types, we underscore the importance of their dynamic nature in potentiating tumor progression.
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Affiliation(s)
- Dillon P Boulton
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, United States.,Pharmacology Graduate Program, University of Colorado, Aurora, CO, United States
| | - M Cecilia Caino
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, United States
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13
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Liu T, Ma Q, Li W, Hu Y, Yang J, Yao Q. Ubiquilin 1 suppresses the cancer stem cell-like traits of non-small cell lung cancer cells by regulating reactive oxygen species homeostasis. Bioengineered 2021; 12:7143-7155. [PMID: 34546848 PMCID: PMC8806721 DOI: 10.1080/21655979.2021.1979353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Cancer stem cell (CSC) has been confirmed to trigger tumor occurrence and progression and CSC can develop strategies to maintain a lower reactive oxygen species (ROS) level compared to cancer cells. However, the mechanisms contributing to ROS homeostasis in CSC are still lacking key elements. In the current study, we found that reductive redox states and ROS levels were suppressed in non-adherent spheres formed by non-small cell lung cancer (NSCLC) cells, which were confirmed to hold CSC-like traits. However, mitochondria DNA content and cellular oxygen consumption rate analyses revealed fewer numbers of mitochondria in NSCLC spheres. Further exploration attributed this result to decreased mitochondrial biogenesis, likely resulted from the accelerated degradation of peroxisome proliferator-activated receptor γ coactivator 1α (PGC1α). Mechanistic studies indicated that Ubiquilin 1 (UBQLN1) increased PGC1α protein stability via reducing the ubiquitination of PGC1α protein. Moreover, UBQLN1 was lowly expressed in NSCLC spheres compared to that in parental NSCLC cells and UBQLN1 overexpression suppressed the CSC-like traits of NSCLC cells, which was characterized as the decrease of ALDH1 activity, sphere-formation ability, and CSC marker expression. Finally, clinical investigations further demonstrated that UBQLN1 level was positively correlated with patient’s survival of lung adenocarcinoma, but not squamous cell carcinoma of lung. Taken together, our results revealed a novel mechanism involving ROS homeostasis and mitochondrial biogenesis in non-small cell lung CSCs, which may provide novel potential targets and methods for NSCLC patients.
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Affiliation(s)
- Ting Liu
- Department of Geriatric Medicine, Ningbo First Hospital, Ningbo, China
| | - Qianqian Ma
- Department of Geriatric Medicine, Ningbo First Hospital, Ningbo, China
| | - Wenjie Li
- Department of Geriatric Medicine, Ningbo First Hospital, Ningbo, China
| | - Yan Hu
- Department of Geriatric Medicine, Ningbo First Hospital, Ningbo, China
| | - Jun Yang
- Department of Geriatric Medicine, Ningbo First Hospital, Ningbo, China
| | - Qi Yao
- Department of Geriatric Medicine, Ningbo First Hospital, Ningbo, China
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