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Koizume S, Takahashi T, Miyagi Y. Lipid droplets: a candidate new research field for epithelial ovarian cancer. Front Pharmacol 2024; 15:1437161. [PMID: 39011508 PMCID: PMC11246970 DOI: 10.3389/fphar.2024.1437161] [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: 05/23/2024] [Accepted: 06/11/2024] [Indexed: 07/17/2024] Open
Abstract
Ovarian clear cell carcinoma (OCCC) is a histological subtype that constitutes approximately 20% of epithelial ovarian cancer cases in Asian countries, but has a relatively low incidence in Western countries. Meanwhile, clear cell renal cell carcinoma (ccRCC) is a major subtype of kidney cancer. OCCC and ccRCC resemble one another histologically and have clear cytoplasmic appearances. Studies have revealed some genetic similarities between OCCC and ccRCC. However, information regarding common biological background factors between these cancers remains scarce. For example, accumulation of cellular lipid droplets was shown to play a crucial role in ccRCC progression, while similar information is lacking for OCCC. In this perspective article, we propose that lipid droplets may be candidates for future exploration to better understand the common biological backgrounds between OCCC and ccRCC, potentially leading to subtype-specific treatment strategies. We further discuss the relationship between poly ADP-ribose polymerase inhibition treatment and lipid metabolism because this therapeutic strategy has attracted considerable attention as a treatment for epithelial ovarian cancer.
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Affiliation(s)
- Shiro Koizume
- Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, Japan
- Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, Japan
| | - Tomoko Takahashi
- Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, Japan
| | - Yohei Miyagi
- Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, Japan
- Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, Japan
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2
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Han M, Zhu H, Chen X, Luo X. 6-O-endosulfatases in tumor metastasis: heparan sulfate proteoglycans modification and potential therapeutic targets. Am J Cancer Res 2024; 14:897-916. [PMID: 38455409 PMCID: PMC10915330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/22/2024] [Indexed: 03/09/2024] Open
Abstract
Metastasis is the leading cause of cancer-associated mortality. Although advances in the targeted treatment and immunotherapy have improved the management of some cancers, the prognosis of metastatic cancers remains unsatisfied. Therefore, the specific mechanisms in tumor metastasis need further investigation. 6-O-endosulfatases (SULFs), comprising sulfatase1 (SULF1) and sulfatase 2 (SULF2), play pivotal roles in the post-synthetic modifications of heparan sulfate proteoglycans (HSPGs). Consequently, these extracellular enzymes can regulate a variety of downstream pathways by modulating HSPGs function. During the past decades, researchers have detected the expression of SULF1 and SULF2 in most cancers and revealed their roles in tumor progression and metastasis. Herein we reviewed the metastasis steps which SULFs participated in, elucidated the specific roles and mechanisms of SULFs in metastasis process, and discussed the effects of SULFs in different types of cancers. Moreover, we summarized the role of targeting SULFs in combination therapy to treat metastatic cancers, which provided some novel strategies for cancer therapy.
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Affiliation(s)
- Mengzhen Han
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary DiseasesWuhan 430030, Hubei, China
| | - He Zhu
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary DiseasesWuhan 430030, Hubei, China
| | - Xiaoping Chen
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary DiseasesWuhan 430030, Hubei, China
| | - Xin Luo
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary DiseasesWuhan 430030, Hubei, China
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3
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Yin H, Shan Y, Xia T, Ji Y, Yuan L, You Y, You B. Emerging Roles of Lipophagy in Cancer Metastasis. Cancers (Basel) 2022; 14:cancers14184526. [PMID: 36139685 PMCID: PMC9496701 DOI: 10.3390/cancers14184526] [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: 08/14/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Metastasis is the main cause of death in patients with malignant tumors worldwide. Mounting evidence suggests lipid droplet metabolism is involved in the process of metastasis. As a mechanism to selectively degrade lipid droplets, the current research on lipophagy and tumor metastasis is quite limited. This review summarizes the crosstalk among lipophagy, tumor lipid metabolism and cancer metastasis, which will provide a new reference for the development of effective targeted drugs. Abstract Obesity is a prominent risk factor for certain types of tumor progression. Adipocytes within tumor stroma contribute to reshaping tumor microenvironment (TME) and the metabolism and metastasis of tumors through the production of cytokines and adipokines. However, the crosstalk between adipocytes and tumor cells remains a major gap in this field. Known as a subtype of selective autophagy, lipophagy is thought to contribute to lipid metabolism by breaking down intracellular lipid droplets (LDs) and generating free fatty acids (FAs). The metastatic potential of cancer cells closely correlates with the lipid degradation mechanisms, which are required for energy generation, signal transduction, and biosynthesis of membranes. Here, we discuss the recent advance in the understanding of lipophagy with tumor lipid metabolism and review current studies on the roles of lipoghagy in the metastasis of certain human malignancies. Additionally, the novel candidate drugs targeting lipophagy are integrated for effective treatment strategies.
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Affiliation(s)
- Haimeng Yin
- Institute of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Medical School, Nantong University, Qixiu Road 19, Nantong 226001, China
| | - Ying Shan
- Institute of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Medical School, Nantong University, Qixiu Road 19, Nantong 226001, China
- Department of Otorhinolaryngology Head and Neck surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
| | - Tian Xia
- Institute of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Medical School, Nantong University, Qixiu Road 19, Nantong 226001, China
- Department of Otorhinolaryngology Head and Neck surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
| | - Yan Ji
- Institute of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Medical School, Nantong University, Qixiu Road 19, Nantong 226001, China
| | - Ling Yuan
- Institute of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Medical School, Nantong University, Qixiu Road 19, Nantong 226001, China
| | - Yiwen You
- Institute of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Medical School, Nantong University, Qixiu Road 19, Nantong 226001, China
- Department of Otorhinolaryngology Head and Neck surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Correspondence: (Y.Y.); (B.Y.)
| | - Bo You
- Institute of Otolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Medical School, Nantong University, Qixiu Road 19, Nantong 226001, China
- Department of Otorhinolaryngology Head and Neck surgery, Affiliated Hospital of Nantong University, Xisi Road 20, Nantong 226001, China
- Correspondence: (Y.Y.); (B.Y.)
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Koizume S, Takahashi T, Nakamura Y, Yoshihara M, Ota Y, Sato S, Tadokoro H, Yokose T, Kato H, Miyagi E, Miyagi Y. Lipophagy-ICAM-1 pathway associated with fatty acid and oxygen deficiencies is involved in poor prognoses of ovarian clear cell carcinoma. Br J Cancer 2022; 127:462-473. [PMID: 35449452 PMCID: PMC9346109 DOI: 10.1038/s41416-022-01808-4] [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: 09/15/2021] [Revised: 03/21/2022] [Accepted: 03/25/2022] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Serum starvation and hypoxia (SSH) mimics a stress condition in tumours. We have shown that intercellular adhesion molecule-1 (ICAM-1) protein is synergistically expressed in ovarian clear cell carcinoma (CCC) cells under SSH in response to an insufficient supply of fatty acids (FAs). This ICAM-1 expression is responsible for resistance against the lethal condition, thereby promoting tumour growth. However, the underlying mechanisms that link SSH-driven ICAM1 gene expression to impaired FA supply and its clinical relevance are unclear. METHODS The underlying mechanisms of how FA deficiency induces ICAM-1 expression in cooperation with hypoxia were analysed in vitro and in vivo. Clinical significance of CCC cell-derived ICAM-1 and the mechanism associated with the transcriptional synergism were also investigated. RESULTS ICAM-1 expression was mediated through lipophagy-driven lipid droplet degradation, followed by impaired FA-lipid droplet flow. Lipophagy induced ICAM1 expression through stabilisation of NFκB binding to the promoter region via Sam68 and hTERT. Analyses of clinical specimens revealed that expression of ICAM-1 and LC3B, an autophagy marker associated with lipophagy, significantly correlated with poor prognoses of CCC. CONCLUSIONS The lipophagy-ICAM-1 pathway induced under a tumour-like stress conditions contributes to CCC progression and is a potential therapeutic target for this aggressive cancer type.
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Affiliation(s)
- Shiro Koizume
- Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515, Japan. .,Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515, Japan.
| | - Tomoko Takahashi
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Yoshiyasu Nakamura
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Mitsuyo Yoshihara
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Yukihide Ota
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan ,grid.268441.d0000 0001 1033 6139Department of Obstetrics, Gynecology, and Molecular Reproductive Science, Yokohama City University, Graduate School of Medicine, Yokohama, 236-0004 Japan
| | - Shinya Sato
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan ,grid.414944.80000 0004 0629 2905Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515 Japan
| | - Hiroko Tadokoro
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Tomoyuki Yokose
- grid.414944.80000 0004 0629 2905Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515 Japan
| | - Hisamori Kato
- grid.414944.80000 0004 0629 2905Department of Gynecology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515 Japan
| | - Etsuko Miyagi
- grid.268441.d0000 0001 1033 6139Department of Obstetrics, Gynecology, and Molecular Reproductive Science, Yokohama City University, Graduate School of Medicine, Yokohama, 236-0004 Japan
| | - Yohei Miyagi
- Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515, Japan. .,Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515, Japan.
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5
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S SK, Swamy SN, Devaraj VR, Premalatha CS, Pallavi VR, Chandrashekar Sagar BK, Shinde DD, Gawari R. Metabolic Reprogramming and Lipophagy Mediates Survival of Ascites Derived Metastatic Ovarian Cancer Cells. Asian Pac J Cancer Prev 2022; 23:1699-1709. [PMID: 35633555 PMCID: PMC9587889 DOI: 10.31557/apjcp.2022.23.5.1699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 05/09/2022] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE The study was aimed at understanding the survival of metastatic ovarian cancer spheroids in the malignant ascites microenvironment. METHODS All the assays were performed using aseptically collected patient samples. The cells were characterized for the expression of ovarian and cancer stem cell markers using immunocytochemistry. The presence of lipid in the primary metastatic cancer spheroids were confirmed by neutral fat staining using Oil Red-O and transmission electron microscopy. The mRNA expression of autophagy and lipid metabolism genes was analyzed using RT-PCR. The lipid content was analyzed using lipidomics analysis. Etomoxir and chloroquine were used to study the effect of inhibition of autophagy in the metastatic cells. The data were analyzed using appropriate statistical tools and a p-value <0.05 was considered to be statistically significant. RESULTS Metastatic ovarian cancer spheroids exhibit cancer stem like properties and undergo a metabolic reprogramming when they disseminate from the primary tumor. We report here the accumulation of numerous cytoplasmic lipid droplets and lipophagic vesicles in the metastatic cells in contrast to their primary tumors. In addition we also report that these cells depend on lipophagy for the utilization of lipids rather than the conventional lipolytic pathway. The lipidomics analysis data reveals that the metastatic cells possess high levels of unsaturated fatty acids. We have also reported the occurrence of distinct accumulation of multiple nuclei in the patient derived metastatic cells. Inhibition of beta-oxidation and autophagic machinery using etomoxir and chloroquine resulted in cell death suggesting a potential mode to suppress metastatic cancer cells. CONCLUSION Metabolic reprogramming is a characteristic feature of the metastatic ovarian cancer cells that are persisting in the malignant ascites. Targeting of the metastatic by gaining an insight into the various metabolic and molecular changes that occur in the metastatic niche provides a promising therapeutic approach in management of the disease.
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Affiliation(s)
- Sandeep Kumar S
- Department of Biochemistry, Kidwai Memorial Institute of Oncology Dr.M.H.Marigowda Road Bangalore, India.
| | - Shalini N Swamy
- Department of Biochemistry, Kidwai Memorial Institute of Oncology Dr.M.H.Marigowda Road Bangalore, India.
| | | | - Chennagiri S Premalatha
- Department of Pathology, Kidwai Memorial Institute of Oncology Dr.M.H.Marigowda raod Bangalore India.
| | - V R Pallavi
- Department of Gynecologic Oncology, Kidwai Memorial Institute of Oncology, Bangalore, India.
| | - B K Chandrashekar Sagar
- Department of Neuropathology, National Institute of Mental Health and Neuro Sciences, Bangalore, India.
| | - Dhananjay D Shinde
- Department of Pathology and Microbiology, University of Nebraska Medical Centre, Omaha, NE, USA.
| | - Ramesh Gawari
- Department of Biochemistry, Kidwai Memorial Institute of Oncology Dr.M.H.Marigowda Road Bangalore, India.
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Xiao Y, Jin L, Deng C, Guan Y, Kalogera E, Ray U, Thirusangu P, Staub J, Sarkar Bhattacharya S, Xu H, Fang X, Shridhar V. Inhibition of PFKFB3 induces cell death and synergistically enhances chemosensitivity in endometrial cancer. Oncogene 2021; 40:1409-1424. [PMID: 33420377 PMCID: PMC7906909 DOI: 10.1038/s41388-020-01621-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/05/2020] [Accepted: 12/11/2020] [Indexed: 02/07/2023]
Abstract
The advanced or recurrent endometrial cancer (EC) has a poor prognosis because of chemoresistance. 6-Phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 (PFKFB3), a glycolytic enzyme, is overexpressed in a variety of human cancers and plays important roles in promoting tumor cell growth. Here, we showed that high expression of PFKFB3 in EC cell lines is associated with chemoresistance. Pharmacological inhibition of PFKFB3 with PFK158 and or genetic downregulation of PFKFB3 dramatically suppressed cell proliferation and enhanced the sensitivity of EC cells to carboplatin (CBPt) and cisplatin (Cis). Moreover, PFKFB3 inhibition resulted in reduced glucose uptake, ATP production, and lactate release. Notably, we found that PFK158 with CBPt or Cis exerted strong synergistic antitumor activity in chemoresistant EC cell lines, HEC-1B and ARK-2 cells. We also found that the combination of PFK158 and CBPt/Cis induced apoptosis- and autophagy-mediated cell death through inhibition of the Akt/mTOR signaling pathway. Mechanistically, we found that PFK158 downregulated the CBPt/Cis-induced upregulation of RAD51 expression and enhanced CBPt/Cis-induced DNA damage as demonstrated by an increase in γ-H2AX levels in HEC-1B and ARK-2 cells, potentially revealing a means to enhance PFK158-induced chemosensitivity. More importantly, PFK158 treatment, either as monotherapy or in combination with CBPt, led to a marked reduction in tumor growth in two chemoresistant EC mouse xenograft models. These data suggest that PFKFB3 inhibition alone or in combination with standard chemotherapy may be used as a novel therapeutic strategy for improved therapeutic efficacy and outcomes of advanced and recurrent EC patients.
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Affiliation(s)
- Yinan Xiao
- grid.66875.3a0000 0004 0459 167XDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN USA ,grid.452708.c0000 0004 1803 0208Department of Obstetrics and Gynecology, the Second Xiangya Hospital, Central South University, Changsha, Hunan P.R. China
| | - Ling Jin
- grid.66875.3a0000 0004 0459 167XDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN USA
| | - Chaolin Deng
- grid.66875.3a0000 0004 0459 167XDepartment of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN USA
| | - Ye Guan
- grid.214458.e0000000086837370Department of Chemistry, University of Michigan, Ann Arbor, MI USA
| | - Eleftheria Kalogera
- grid.66875.3a0000 0004 0459 167XDivision of Gynecologic Oncology, Mayo Clinic, Rochester, MN USA
| | - Upasana Ray
- grid.66875.3a0000 0004 0459 167XDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN USA
| | - Prabhu Thirusangu
- grid.66875.3a0000 0004 0459 167XDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN USA
| | - Julie Staub
- grid.66875.3a0000 0004 0459 167XDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN USA
| | | | - Haotian Xu
- grid.254444.70000 0001 1456 7807Department of Computer Science, Wayne State University, Detroit, MI USA
| | - Xiaoling Fang
- grid.452708.c0000 0004 1803 0208Department of Obstetrics and Gynecology, the Second Xiangya Hospital, Central South University, Changsha, Hunan P.R. China
| | - Viji Shridhar
- grid.66875.3a0000 0004 0459 167XDepartment of Experimental Pathology, Mayo Clinic, Rochester, MN USA
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Chen G, Zhou G, Lotvola A, Granneman JG, Wang J. ABHD5 suppresses cancer cell anabolism through lipolysis-dependent activation of the AMPK/mTORC1 pathway. J Biol Chem 2021; 296:100104. [PMID: 33219129 PMCID: PMC7949079 DOI: 10.1074/jbc.ra120.014682] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 11/11/2020] [Accepted: 11/20/2020] [Indexed: 12/15/2022] Open
Abstract
ABHD5 is an essential coactivator of ATGL, the rate-limiting triglyceride (TG) lipase in many cell types. Importantly, ABHD5 also functions as a tumor suppressor, and ABHD5 mRNA expression levels correlate with patient survival for several cancers. Nevertheless, the mechanisms involved in ABHD5-dependent tumor suppression are not known. We found that overexpression of ABHD5 induces cell cycle arrest at the G1 phase and causes growth retardation in a panel of prostate cancer cells. Transcriptomic profiling and biochemical analysis revealed that genetic or pharmacological activation of lipolysis by ABHD5 potently inhibits mTORC1 signaling, leading to a significant downregulation of protein synthesis. Mechanistically, we found that ABHD5 elevates intracellular AMP content, which activates AMPK, leading to inhibition of mTORC1. Interestingly, ABHD5-dependent suppression of mTORC1 was abrogated by pharmacological inhibition of DGAT1 or DGAT2, isoenzymes that re-esterify fatty acids in a process that consumes ATP. Collectively, this study maps out a novel molecular pathway crucial for limiting cancer cell proliferation, in which ABHD5-mediated lipolysis creates an energy-consuming futile cycle between TG hydrolysis and resynthesis, leading to inhibition of mTORC1 and cancer cell growth arrest.
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Affiliation(s)
- Guohua Chen
- Department of Pathology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Guoli Zhou
- Biomedical Research Informatics Core, Clinical and Translational Sciences Institute, Michigan State University, East Lansing, Michigan, USA
| | - Aaron Lotvola
- Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - James G Granneman
- Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Jian Wang
- Department of Pathology, Wayne State University School of Medicine, Detroit, Michigan, USA.
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Adhikari P, Hasan M, Sridhar V, Roy D, Pradhan P. Studying nanoscale structural alterations in cancer cells to evaluate ovarian cancer drug treatment, using transmission electron microscopy imaging. Phys Biol 2020; 17:036005. [PMID: 31931492 DOI: 10.1088/1478-3975/ab6abb] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Understanding nanoscale structural changes can provide information about the physical state of cells/tissues. It has now been shown that increases in nanoscale structural alterations are associated with the progress of carcinogenesis in most cancer cases, including early carcinogenesis. Anti-cancerous therapies are designed to inhibit the growth of cancer cells; however, it is challenging to detect the efficacy of such drugs in the early stages of treatment. A unique method of assessing the impact of anti-cancerous drugs on cancerous cells/tissues is to probe the nanoscale structural alterations. In this paper, we study the effect of different anti-cancerous drugs on ovarian tumorigenic cells, using their nanoscale structural alterations as a biomarker. Transmission electron microscopy (TEM) imaging on thin cell sections is performed to obtain their nanoscale structures. The degree of nanoscale structural alterations of tumorigenic cells and anti-cancerous drug treated tumorigenic cells are quantified by using the recently developed inverse participation ratio (IPR) technique. Results show an increase in the degree of nanoscale fluctuations in tumorigenic cells relative to non-tumorigenic cells; then a near-reversal of the degree of fluctuation in tumorigenic cells to that in non-tumorigenic cells, following anti-cancerous drug treatment. These results support that the effect of anti-cancerous drugs in cancer treatment can be quantified by using the degree of nanoscale fluctuations in the cells via TEM imaging. Potential applications of the technique for cancer treatment are also discussed.
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Affiliation(s)
- Prakash Adhikari
- Department of Physics and Astronomy, Mississippi State University, Mississippi State, MS 39762, United States of America
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Heparanase Inhibition by Pixatimod (PG545): Basic Aspects and Future Perspectives. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1221:539-565. [PMID: 32274726 DOI: 10.1007/978-3-030-34521-1_22] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Pixatimod is an inhibitor of heparanase, a protein which promotes cancer via its regulation of the extracellular environment by enzymatic cleavage of heparan sulfate (HS) and non-enzymatic signaling. Through its inhibition of heparanase and other HS-binding signaling proteins, pixatimod blocks a number of pro-cancerous processes including cell proliferation, invasion, metastasis, angiogenesis and epithelial-mesenchymal transition. Several laboratories have found that these activities have translated into potent activity using a range of different mouse cancer models, including approximately 30 xenograft and 20 syngeneic models. Analyses of biological samples from these studies have confirmed the heparanase targeting of this agent in vivo and the broad spectrum of anti-cancer effects that heparanase blockade achieves. Pixatimod has been tested in combination with a number of approved anti-cancer drugs demonstrating its clinical potential, including with gemcitabine, paclitaxel, sorafenib, platinum agents and an anti-PD-1 antibody. Clinical testing has shown pixatimod to be well tolerated as a monotherapy, and it is currently being investigated in combination with the anti-PD-1 drug nivolumab in a pancreatic cancer phase I trial.
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10
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Ullah S, Zhang M, Yu H, Mustafa S, Shafiq M, Wei Q, Wang W, Jan M, Mao D. Heat exposure affected the reproductive performance of pregnant mice: Enhancement of autophagy and alteration of subcellular structure in the corpus luteum. Reprod Biol 2019; 19:261-269. [PMID: 31285134 DOI: 10.1016/j.repbio.2019.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/23/2019] [Accepted: 06/28/2019] [Indexed: 01/07/2023]
Abstract
To investigate whether autophagy and subcellular changes are involved in the corpus luteum after heat exposure, a total of 30 early pregnant mice were divided equally into heat stress (HS) and non-HS (NHS) groups (n = 15). Mice in the HS group were exposed to 40.5 ± 0.2 ℃ for 7 consecutive days. Ovaries were collected for immunohistochemistry (IHC), western blot (WB) analysis and transmission electron microscopy (TEM). Serum was collected to determine progesterone by RIA and uteri were collected to count the implantation sites. Results showed that heat exposure increased rectal temperature, decreased body weight and number of implantation sites. WB analysis revealed that ovarian expression of LC3B and Atg7 was up-regulated, while p62 was down-regulated in the HS group. IHC results demonstrated that ovarian staining intensity of LC3B was more intense in the HS group than that of the NHS group. LC3B was mainly localized in the granulosa cells, oocytes and luteal steroidogenic cells of the HS group. TEM results revealed double-layered separated membranes indicative of autophagosomes in the luteal steroidogenic cells of the HS group. Moreover, TEM showed that the mitochondrial cristae became dearth, structure-less, swollen after HS. Additionally, the nucleus expanded and accumulation of lipid droplets increased after HS. Results also showed that heat exposure decreased serum progesterone level and ovarian P450scc expression. These results indicate that HS enhanced autophagy and altered the subcellular structure of luteal steroidogenic cells, which may contribute to interfering with the maintenance of luteal function in early pregnant mice.
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Affiliation(s)
- Saif Ullah
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China; Faculty of Veterinary and Animal Science, Lasbela University of Agriculture Water and Marine Science, Uthal, Balochistan, 90150, Pakistan
| | - Maoduo Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
| | - Hao Yu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
| | - Sheeraz Mustafa
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
| | - Muhammad Shafiq
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
| | - Quanwei Wei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
| | - Wei Wang
- National Experimental Teaching Demonstration Center of Animal Science, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China
| | - Muhammad Jan
- Faculty of Veterinary and Animal Science, Lasbela University of Agriculture Water and Marine Science, Uthal, Balochistan, 90150, Pakistan
| | - Dagan Mao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, PR China.
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Xu L, Tang L, Zhang L. Proteoglycans as miscommunication biomarkers for cancer diagnosis. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 162:59-92. [PMID: 30905465 DOI: 10.1016/bs.pmbts.2018.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Hernández-Corbacho MJ, Obeid LM. A novel role for DGATs in cancer. Adv Biol Regul 2018; 72:89-101. [PMID: 30579761 DOI: 10.1016/j.jbior.2018.12.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/09/2018] [Accepted: 12/10/2018] [Indexed: 02/06/2023]
Affiliation(s)
- María José Hernández-Corbacho
- Stony Brook Cancer Center and the Department of Medicine, Stony Brook University, Health Sciences Center, Stony Brook, NY, 11794, USA
| | - Lina M Obeid
- Stony Brook Cancer Center and the Department of Medicine, Stony Brook University, Health Sciences Center, Stony Brook, NY, 11794, USA; The Northport VA Medical Center, Northport, NY, 11768, USA.
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13
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Mondal S, Roy D, Sarkar Bhattacharya S, Jin L, Jung D, Zhang S, Kalogera E, Staub J, Wang Y, Xuyang W, Khurana A, Chien J, Telang S, Chesney J, Tapolsky G, Petras D, Shridhar V. Therapeutic targeting of PFKFB3 with a novel glycolytic inhibitor PFK158 promotes lipophagy and chemosensitivity in gynecologic cancers. Int J Cancer 2018; 144:178-189. [PMID: 30226266 PMCID: PMC6261695 DOI: 10.1002/ijc.31868] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 06/27/2018] [Accepted: 08/01/2018] [Indexed: 12/28/2022]
Abstract
Metabolic alterations are increasingly recognized as important novel anti‐cancer targets. Among several regulators of metabolic alterations, fructose 2,6 bisphosphate (F2,6BP) is a critical glycolytic regulator. Inhibition of the active form of PFKFB3ser461 using a novel inhibitor, PFK158 resulted in reduced glucose uptake, ATP production, lactate release as well as induction of apoptosis in gynecologic cancer cells. Moreover, we found that PFK158 synergizes with carboplatin (CBPt) and paclitaxel (PTX) in the chemoresistant cell lines, C13 and HeyA8MDR but not in their chemosensitive counterparts, OV2008 and HeyA8, respectively. We determined that PFK158‐induced autophagic flux leads to lipophagy resulting in the downregulation of cPLA2, a lipid droplet (LD) associated protein. Immunofluorescence and co‐immunoprecipitation revealed colocalization of p62/SQSTM1 with cPLA2 in HeyA8MDR cells uncovering a novel pathway for the breakdown of LDs promoted by PFK158. Interestingly, treating the cells with the autophagic inhibitor bafilomycin A reversed the PFK158‐mediated synergy and lipophagy in chemoresistant cells. Finally, in a highly metastatic PTX‐resistant in vivo ovarian mouse model, a combination of PFK158 with CBPt significantly reduced tumor weight and ascites and reduced LDs in tumor tissue as seen by immunofluorescence and transmission electron microscopy compared to untreated mice. Since the majority of cancer patients will eventually recur and develop chemoresistance, our results suggest that PFK158 in combination with standard chemotherapy may have a direct clinical role in the treatment of recurrent cancer. What's new? Ovarian and cervical cancer patients experience high rates of chemoresistance and tumor recurrence. To improve patient outcome, greater understanding of mechanisms behind these phenomena is needed. Here, activity of PFKFB3, a glycolytic regulator overexpressed in cancer, was found to be positively correlated with chemoresistance and lipid droplet (LD) biogenesis in ovarian and cervical cancer cells. PFK‐158, a PFKFB3 inhibitor, sensitized chemoresistant cells to drug‐induced cytotoxicity by simultaneously targeting both glycolytic and lipogenic pathways to inhibit tumor growth and LDs in a drug‐resistant xenograft model. The findings warrant further investigation of PFK158 as a treatment for recurrent gynecological malignancy.
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Affiliation(s)
- Susmita Mondal
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN.,Department of Microbiology, Sammilani Mahavidyalaya, Kolkata, India
| | - Debarshi Roy
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
| | | | - Ling Jin
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
| | - Deokbeom Jung
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
| | - Song Zhang
- Division of Cardiovascular disease, Department of Medicine, Mayo Clinic, Rochester, MN
| | - Eleftheria Kalogera
- Division of Gynecologic Surgery, Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN
| | - Julie Staub
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
| | - Yaxian Wang
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
| | - Wen Xuyang
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
| | - Ashwani Khurana
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
| | - Jeremey Chien
- Division of Molecular Medicine, University of New Mexico School of Medicine, Albuquerque, NM
| | - Sucheta Telang
- Department of Medicine, University of Louisville, Louisville, KY
| | - Jason Chesney
- Department of Medicine, University of Louisville, Louisville, KY
| | | | - Dzeja Petras
- Division of Cardiovascular disease, Department of Medicine, Mayo Clinic, Rochester, MN
| | - Viji Shridhar
- Department of Experimental Pathology, Mayo Clinic, Rochester, MN
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O’Connor D, Byrne A, Dolan C, Keyes TE. Phase partitioning, solvent-switchable BODIPY probes for high contrast cellular imaging and FCS. NEW J CHEM 2018. [DOI: 10.1039/c7nj04604a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lipophilic BODIPY fluorphores, in which the BODIPY core bears pendant dipyrido[3,2-a:2′,3′-c]phenazine (Dppz) or naphthyridyl and cholesterol substituents were designed and prepared as lipid probes for both liposomes and live cell imaging.
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Affiliation(s)
- Darragh O’Connor
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
| | - Aisling Byrne
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
| | - Ciarán Dolan
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
| | - Tia E. Keyes
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University
- Dublin 9
- Ireland
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15
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Lipid Storage and Autophagy in Melanoma Cancer Cells. Int J Mol Sci 2017; 18:ijms18061271. [PMID: 28617309 PMCID: PMC5486093 DOI: 10.3390/ijms18061271] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 06/12/2017] [Accepted: 06/13/2017] [Indexed: 01/06/2023] Open
Abstract
Cancer stem cells (CSC) represent a key cellular subpopulation controlling biological features such as cancer progression in all cancer types. By using melanospheres established from human melanoma patients, we compared less differentiated melanosphere-derived CSC to differentiating melanosphere-derived cells. Increased lipid uptake was found in melanosphere-derived CSC vs. differentiating melanosphere-derived cells, paralleled by strong expression of lipogenic factors Sterol Regulatory Element-Binding Protein-1 (SREBP-1) and Peroxisome Proliferator-Activated Receptor-γ (PPAR-γ). An inverse relation between lipid-storing phenotype and autophagy was also found, since microtubule-associated protein 1A/1B-Light Chain 3 (LC3) lipidation is reduced in melanosphere-derived CSC. To investigate upstream autophagy regulators, Phospho-AMP activated Protein Kinase (P-AMPK) and Phospho-mammalian Target of Rapamycin (P-mTOR) were analyzed; lower P-AMPK and higher P-mTOR expression in melanosphere-derived CSC were found, thus explaining, at least in part, their lower autophagic activity. In addition, co-localization of LC3-stained autophagosome spots and perilipin-stained lipid droplets was demonstrated mainly in differentiating melanosphere-derived cells, further supporting the role of autophagy in lipid droplets clearance. The present manuscript demonstrates an inverse relationship between lipid-storing phenotype and melanoma stem cells differentiation, providing novel indications involving autophagy in melanoma stem cells biology.
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