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Nakagawa C, Oikawa T, Yamada K, Tsubota A, Saeki C, Katagiri K, Tago N, Kamioka H, Ueda K, Haruki K, Furukawa K, Nakano M, Torisu Y, Ikegami T, Yoshida K, Saruta M. Protein kinase C delta enhances the diagnostic performance of hepatocellular carcinoma. Biomarkers 2024; 29:55-67. [PMID: 38361436 DOI: 10.1080/1354750x.2024.2312990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/27/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND The conventional markers for hepatocellular carcinoma (HCC), α-fetoprotein (AFP) and des-γ-carboxy prothrombin (DCP), have several limitations; both have low sensitivity in patients with early-stage HCC; low sensitivity for AFP with HCC after eliminating hepatitis C virus (HCV); low specificity for DCP in patients with non-viral HCC, which is increasing worldwide; low specificity for AFP in patients with liver injury; and low specificity for DCP in patients treated with warfarin. To overcome these issues, the identification of novel biomarkers is an unmet need. OBJECTIVE This study aimed to assess the usefulness of serum protein kinase C delta (PKCδ) for detecting these HCCs. METHODS PKCδ levels were measured using a sandwich enzyme-linked immunosorbent assay in 363 chronic liver disease (CLD) patients with and without HCC. RESULTS In both viral and non-viral CLD, PKCδ can detect HCCs with high sensitivity and specificity, particularly in the very early stages. Notably, the value and sensitivity of PKCδ were not modified by HCV elimination status. Liver injury and warfarin administration, which are known to cause false-positive results for conventional markers, did not modify PKCδ levels. CONCLUSIONS PKCδ is an enhanced biomarker for the diagnosis of HCC that compensates for the drawbacks of conventional markers.
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Affiliation(s)
- Chika Nakagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Tsunekazu Oikawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Kohji Yamada
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Akihito Tsubota
- Project Research Units, Research Center for Medical Science, The Jikei University School of Medicine, Tokyo, Japan
| | - Chisato Saeki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Kuniko Katagiri
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Naoko Tago
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Hiroshi Kamioka
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Kaoru Ueda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Koichiro Haruki
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Kenei Furukawa
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Masanori Nakano
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuichi Torisu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Toru Ikegami
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
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Takano Y, Yogosawa S, Imaizumi Y, Kamioka H, Kanegae Y, Eto K, Yoshida K. DYRK2 promotes chemosensitivity via p53-mediated apoptosis after DNA damage in colorectal cancer. Cancer Sci 2023; 114:4558-4570. [PMID: 37776195 PMCID: PMC10728020 DOI: 10.1111/cas.15973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/29/2023] [Accepted: 09/06/2023] [Indexed: 10/02/2023] Open
Abstract
Dual-specificity tyrosine-regulated kinase 2 (DYRK2) is a protein kinase that phosphorylates p53-Ser46 and induces apoptosis in response to DNA damage. However, the relationship between DYRK2 expression and chemosensitivity after DNA damage in colorectal cancer has not been well investigated. The aim of the present study was to examine whether DYRK2 could be a novel marker for predicting chemosensitivity after 5-fluorouracil- and oxaliplatin-induced DNA damage in colorectal cancer. Here we showed that DYRK2 knockout decreased the chemosensitivity to 5-fluorouracil and oxaliplatin in p53 wild-type colorectal cancer cells, whereas the chemosensitivity remained unchanged in p53-deficient/mutated colorectal cancer cells. In addition, no significant differences in chemosensitivity to 5-fluorouracil and oxaliplatin between scramble and siDYRK2 p53(-/-) colorectal cancer cells were observed. Conversely, the combination of adenovirus-mediated overexpression of DYRK2 with 5-fluorouracil or oxaliplatin enhanced apoptosis and chemosensitivity through p53-Ser46 phosphorylation in p53 wild-type colorectal cancer cells. Furthermore, DYRK2 knockout decreased chemosensitivity to 5-fluorouracil and oxaliplatin in p53 wild-type xenograft mouse models. Taken together, these findings demonstrated that DYRK2 expression was associated with chemosensitivity to 5-fluorouracil and oxaliplatin in p53 wild-type colorectal cancer, suggesting the importance of evaluating the p53 status and DYRK2 expression as a novel marker in therapeutic strategies for colorectal cancer.
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Affiliation(s)
- Yasuhiro Takano
- Department of BiochemistryThe Jikei University School of MedicineTokyoJapan
- Department of SurgeryThe Jikei University School of MedicineTokyoJapan
| | - Satomi Yogosawa
- Department of BiochemistryThe Jikei University School of MedicineTokyoJapan
| | - Yuta Imaizumi
- Department of SurgeryThe Jikei University School of MedicineTokyoJapan
| | - Hiroshi Kamioka
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of MedicineTokyoJapan
| | - Yumi Kanegae
- Core Research Facilities for Basic Science, Research Center for Medical ScienceThe Jikei University School of MedicineTokyoJapan
| | - Ken Eto
- Department of SurgeryThe Jikei University School of MedicineTokyoJapan
| | - Kiyotsugu Yoshida
- Department of BiochemistryThe Jikei University School of MedicineTokyoJapan
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Yamada K, Hannya Y, Oikawa T, Yoshida A, Katagiri K, Yoshida S, Koizumi R, Tago N, Shimoyama Y, Kawamura A, Mochimaru Y, Eto K, Yoshida K. Extended-Synaptotagmin 1 Enhances Liver Cancer Progression Mediated by the Unconventional Secretion of Cytosolic Proteins. Molecules 2023; 28:4033. [PMID: 37241771 PMCID: PMC10221710 DOI: 10.3390/molecules28104033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/09/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Extended-synaptotagmin 1 (E-Syt1) is an endoplasmic reticulum membrane protein that is involved in cellular lipid transport. Our previous study identified E-Syt1 as a key factor for the unconventional protein secretion of cytoplasmic proteins in liver cancer, such as protein kinase C delta (PKCδ); however, it is unclear whether E-Syt1 is involved in tumorigenesis. Here, we showed that E-Syt1 contributes to the tumorigenic potential of liver cancer cells. E-Syt1 depletion significantly suppressed the proliferation of liver cancer cell lines. Database analysis revealed that E-Syt1 expression is a prognostic factor for hepatocellular carcinoma (HCC). Immunoblot analysis and cell-based extracellular HiBiT assays showed that E-Syt1 was required for the unconventional secretion of PKCδ in liver cancer cells. Furthermore, deficiency of E-Syt1 suppressed the activation of insulin-like growth factor 1 receptor (IGF1R) and extracellular-signal-related kinase 1/2 (Erk1/2), both of which are signaling pathways mediated by extracellular PKCδ. Three-dimensional sphere formation and xenograft model analysis revealed that E-Syt1 knockout significantly decreased tumorigenesis in liver cancer cells. These results provide evidence that E-Syt1 is critical for oncogenesis and is a therapeutic target for liver cancer.
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Affiliation(s)
- Kohji Yamada
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Yoshito Hannya
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
- Department of Surgery, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Tsunekazu Oikawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Ayano Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Kuniko Katagiri
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Saishu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Rei Koizumi
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Naoko Tago
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Yuya Shimoyama
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Akira Kawamura
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Yuta Mochimaru
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
| | - Ken Eto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo 105-8461, Japan (A.Y.)
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Yamada K, Yoshida K. Cancer-Related Unconventional Protein Secretion: A New Role of the Endoplasmic Reticulum. DNA Cell Biol 2023; 42:225-228. [PMID: 36930842 DOI: 10.1089/dna.2023.0044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
Unconventional protein secretion (UPS) is a crucial mechanism controlling the localization of cytosolic proteins lacking signal peptides and is implicated in inflammation, neurodegenerative diseases, and cancer. Several previous studies on immune cells have demonstrated the mechanisms of UPS. In cancer, the active secretion of several cytosolic proteins, including PKCδ and nucleolin, has been described. Moreover, we have recently demonstrated that extended synaptotagmin 1, one of the membrane proteins of the endoplasmic reticulum, plays a critical role in UPS in liver cancer cells. Importantly, UPS in cancer cells shows characteristics that are markedly different from those of the previously known UPS, and therefore, we categorize them as cancer-related UPS (CUPS). In this article, we provide an overview of UPS mechanisms and discuss the process that leads to the naming of cancer-specific UPS as CUPS.
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Affiliation(s)
- Kohji Yamada
- Department of Biochemistry, Jikei University School of Medicine, Minato-ku, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, Jikei University School of Medicine, Minato-ku, Japan
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5
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Shimoyama Y, Yamada K, Yoshida S, Kawamura A, Hannya Y, Imaizumi Y, Kumamoto T, Takeda Y, Shimoda M, Eto K, Yoshida K. Inhibition of protein kinase C delta leads to cellular senescence to induce anti-tumor effects in colorectal cancer. Cancer Sci 2023. [PMID: 36851883 DOI: 10.1111/cas.15768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 02/10/2023] [Accepted: 02/21/2023] [Indexed: 03/01/2023] Open
Abstract
Protein kinase C delta (PKCδ) is a multifunctional serine-threonine kinase implicated in cell proliferation, differentiation, tumorigenesis, and therapeutic resistance. However, the molecular mechanism of PKCδ in colorectal cancer (CRC) remains unclear. In this study, we showed that PKCδ acts as a negative regulator of cellular senescence in p53 wild-type (wt-p53) CRC. Immunohistochemical analysis revealed that PKCδ levels in human CRC tissues were higher than those in the surrounding normal tissues. Deletion studies have shown that cell proliferation and tumorigenesis in wt-p53 CRC is sensitive to PKCδ expression. We found that PKCδ activates p21 via a p53-independent pathway and that PKCδ-kinase activity is essential for p21 activity. In addition, both repression of PKCδ expression and inhibition of PKCδ activity induced cellular senescence-like phenotypes, including increased senescence-associated β-galactosidase (SA-β-gal) staining, low LaminB1 expression, large nucleus size, and senescence-associated secretory phenotype (SASP) detection. Finally, a kinase inhibitor of PKCδ suppressed senescence-dependent tumorigenicity in a dose-dependent manner. These results offer a mechanistic insight into CRC survival and tumorigenesis. In addition, a novel therapeutic strategy for wt-p53 CRC is proposed.
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Affiliation(s)
- Yuya Shimoyama
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Kohji Yamada
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Saishu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Akira Kawamura
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Yoshito Hannya
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuta Imaizumi
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Tomotaka Kumamoto
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Yasuhiro Takeda
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Masayuki Shimoda
- Department of Pathology, The Jikei University School of Medicine, Tokyo, Japan
| | - Ken Eto
- Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
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6
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Jia HT, Shao YF, Zhou XL, Yang G, Huang L, Aikemu B, Li SC, Ding CS, Fan XD, Hong HJ, Zhang S, Pan RJ, Sun J. PKCδ promotes the invasion and migration of colorectal cancer through c-myc/NDRG1 pathway. Front Oncol 2023; 13:1026561. [PMID: 36816970 PMCID: PMC9933346 DOI: 10.3389/fonc.2023.1026561] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/19/2023] [Indexed: 02/05/2023] Open
Abstract
Objective Colorectal cancer (CRC) is the third cause of expected cancer deaths both in men and women in the U.S. and the third most commonly diagnosed cancer in China Targeted therapy has been proven to improve overall survival for unresectable metastatic CRC. But the location of the primary tumor or the presence of various core driver gene mutations that confer resistance may limit the utility of targeted therapy. Therefore, it is of great significance to further elucidate novel mechanisms of invasion and metastasis of CRC and find potential novel therapeutic targets. Protein Kinase C Delta (PKCδ) plays an important role in various diseases, including tumors. In CRC, the function of PKCδ on proliferation and differentiation is mostly studied but various research results were reported. Therefore, the role of PKCδ in CRC needs to be further studied, especially in tumor invasion and metastasis in CRC which few studies have looked into. Methods The expression of PRKCD was analyzed by the Genotype-Tissue Expression (GTEx) and The Cancer Genome Atlas (TCGA) databases and Immunohistochemical (IHC). Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and Gene Set Enrichment Analysis (GSEA) enrichment analysis were used to explore the biological functions and pathways related to PRKCD. Lentivirus transfection was used to construct CRC cell lines with overexpression and knock-down of PKCδ or N-myc Downstream Regulated Gene 1 (NDRG1). Cell invasion and migration assay, wound healing assay were used to detect the function of PKCδ and NDRG1 in the invasion and migration of cells. Flow cytometry analysis was used to detect the influence of PKCδ on the CRC cell cycles .Immunofluorescence histochemistry ,Immunoprecipitation Assay and qPCR were used to detect the relationship of PKCδ and NDRG1. Xenograft model was used to verify the role of PKCδ in vivo. Results PKCδ is overexpressed in CRC and could promote Epithelial-Mesenchymal Transition (EMT) and the invasion and migration of CRC in vitro. We confirmed that PKCδ and the tumor suppressor factor NDRG1 had a co-localization relationship in CRC. PKCδ inhibited NDRG1 transcription and protein expression. Overexpressing NDRG1 could inhibit the function of PKCδ in promoting tumor invasion and migration. PKCδ could regulate c-Myc, one transcription factor of NDRG1, to down-regulate NDRG1. In vivo, overexpressing PKCδ could promote xenograft growth and volume. Thus, our results showed that PKCδ reduced the expression of NDRG1 through c-Myc, promoting the invasion and migration of CRC through promoting EMT. Conclusion The increased expression of PKCδ in CRC tumor tissue could promote the invasion and migration of tumor cells, and one of the mechanisms may be regulating c-Myc to inhibit the expression of NDRG1 and promote EMT.
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Affiliation(s)
- Hong-tao Jia
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan-fei Shao
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xue-liang Zhou
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guang Yang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ling Huang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Batuer Aikemu
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shu-chun Li
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Cheng-sheng Ding
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-dong Fan
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hi-ju Hong
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sen Zhang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,*Correspondence: Jing Sun, ; Rui-jun Pan, ; Sen Zhang,
| | - Rui-jun Pan
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,*Correspondence: Jing Sun, ; Rui-jun Pan, ; Sen Zhang,
| | - Jing Sun
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,*Correspondence: Jing Sun, ; Rui-jun Pan, ; Sen Zhang,
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7
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Insulin-like growth factor-1 stimulates retinal cell proliferation via activation of multiple signaling pathways. CURRENT RESEARCH IN NEUROBIOLOGY 2022; 4:100068. [PMID: 36589675 PMCID: PMC9800307 DOI: 10.1016/j.crneur.2022.100068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/05/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Insulin-like growth factor-1 (IGF-1) plays critical roles in the development of the central nervous system (CNS), including the retina, regulating cell proliferation, differentiation, and survival. Here, we investigated the role of IGF-1 on retinal cell proliferation using primary cultures from rat neural retina. Our data show that IGF-1 stimulates retinal cell proliferation and regulates the expression of neurotrophic factors, such as interleukin-4 and brain-derived neurotrophic factor. In addition, our results indicates that IGF-1-induced retinal cell proliferation requires activation of multiple signaling pathways, including phosphatidylinositol 3-kinase, protein kinase Src, phospholipase-C, protein kinase C delta, and mitogen-activated protein kinase pathways. We further show that activation of matrix metalloproteinases and epidermal growth factor receptor is also necessary for IGF-1 enhancing retinal cell proliferation. Overall, these results unveil potential mechanisms by which IGF-1 ensures retinal cell proliferation and support the notion that manipulation of IGF-1 signaling may be beneficial in CNS disorders associated with abnormal cell proliferation.
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Behari J. Serum Protein Kinase C Delta: New Kid on the Block for Early Detection of Hepatocellular Carcinoma. GASTRO HEP ADVANCES 2022; 2:158-159. [PMID: 39130153 PMCID: PMC11307678 DOI: 10.1016/j.gastha.2022.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 10/31/2022] [Indexed: 08/13/2024]
Affiliation(s)
- Jaideep Behari
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Division of Cancer Control and Population Sciences, UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania
- Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, Pennsylvania
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Kawano T, Inokuchi J, Eto M, Murata M, Kang JH. Protein Kinase C (PKC) Isozymes as Diagnostic and Prognostic Biomarkers and Therapeutic Targets for Cancer. Cancers (Basel) 2022; 14:5425. [PMID: 36358843 PMCID: PMC9658272 DOI: 10.3390/cancers14215425] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/02/2022] [Accepted: 11/02/2022] [Indexed: 08/05/2023] Open
Abstract
Protein kinase C (PKC) is a large family of calcium- and phospholipid-dependent serine/threonine kinases that consists of at least 11 isozymes. Based on their structural characteristics and mode of activation, the PKC family is classified into three subfamilies: conventional or classic (cPKCs; α, βI, βII, and γ), novel or non-classic (nPKCs; δ, ε, η, and θ), and atypical (aPKCs; ζ, ι, and λ) (PKCλ is the mouse homolog of PKCι) PKC isozymes. PKC isozymes play important roles in proliferation, differentiation, survival, migration, invasion, apoptosis, and anticancer drug resistance in cancer cells. Several studies have shown a positive relationship between PKC isozymes and poor disease-free survival, poor survival following anticancer drug treatment, and increased recurrence. Furthermore, a higher level of PKC activation has been reported in cancer tissues compared to that in normal tissues. These data suggest that PKC isozymes represent potential diagnostic and prognostic biomarkers and therapeutic targets for cancer. This review summarizes the current knowledge and discusses the potential of PKC isozymes as biomarkers in the diagnosis, prognosis, and treatment of cancers.
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Affiliation(s)
- Takahito Kawano
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Junichi Inokuchi
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masatoshi Eto
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Masaharu Murata
- Center for Advanced Medical Innovation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Jeong-Hun Kang
- Division of Biopharmaceutics and Pharmacokinetics, National Cerebral and Cardiovascular Center Research Institute, 6-1 Shinmachi, Kishibe, Suita, Osaka 564-8565, Japan
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Extended-synaptotagmin 1 engages in unconventional protein secretion mediated via SEC22B + vesicle pathway in liver cancer. Proc Natl Acad Sci U S A 2022; 119:e2202730119. [PMID: 36044553 PMCID: PMC9457520 DOI: 10.1073/pnas.2202730119] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Protein secretion in cancer cells defines tumor survival and progression by orchestrating the microenvironment. Studies suggest the occurrence of active secretion of cytosolic proteins in liver cancer and their involvement in tumorigenesis. Here, we investigated the identification of extended-synaptotagmin 1 (E-Syt1), an endoplasmic reticulum (ER)-bound protein, as a key mediator for cytosolic protein secretion at the ER-plasma membrane (PM) contact sites. Cytosolic proteins interacted with E-Syt1 on the ER, and then localized spatially inside SEC22B+ vesicles of liver cancer cells. Consequently, SEC22B on the vesicle tethered to the PM via Q-SNAREs (SNAP23, SNX3, and SNX4) for their secretion. Furthermore, inhibiting the interaction of protein kinase Cδ (PKCδ), a liver cancer-specific secretory cytosolic protein, with E-Syt1 by a PKCδ antibody, decreased in both PKCδ secretion and tumorigenicity. Results reveal the role of ER-PM contact sites in cytosolic protein secretion and provide a basis for ER-targeting therapy for liver cancer.
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11
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Oikawa T, Yamada K, Tsubota A, Saeki C, Tago N, Nakagawa C, Ueda K, Kamioka H, Taniai T, Haruki K, Nakano M, Torisu Y, Ikegami T, Yoshida K, Saruta M. Protein Kinase C Delta Is a Novel Biomarker for Hepatocellular Carcinoma. GASTRO HEP ADVANCES 2022; 2:83-95. [PMID: 39130149 PMCID: PMC11308090 DOI: 10.1016/j.gastha.2022.07.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/25/2022] [Indexed: 08/13/2024]
Abstract
Backgrounds and Aims Hepatocellular carcinoma (HCC) is the most common cancer with a poor prognosis. Identification of an alternative biomarker that can detect early-stage and conventional tumor marker-negative HCC is urgently needed. We found that protein kinase C delta (PKCδ) is specifically secreted from HCC cell lines into extracellular space and contributes to tumor development and that its serum levels were elevated in HCC patients. This study aimed to assess the practical usefulness of serum PKCδ for detecting HCC in chronic liver disease (CLD) patients. Methods Serum PKCδ levels in 313 CLD patients with and without HCC (n = 187 and 126, respectively) were measured using a sandwich enzyme-linked immunosorbent assay. The diagnostic performance of PKCδ for HCC was evaluated using the receiver operating characteristic curve analysis and was compared with that of conventional markers, α-fetoprotein (AFP), and des-γ-carboxy prothrombin (DCP). Results Serum PKCδ levels in HCC patients were significantly higher than those in CLD patients without HCC. PKCδ distinguished HCC patients from CLD patients without HCC, with high sensitivity and specificity. Subgroup analyses revealed that the diagnostic performance of PKCδ for HCC was comparable to that of AFP and DCP, and that approximately 40% of AFP/DCP double-negative HCC patients were positive for PKCδ. PKCδ yielded better diagnostic performance for detecting solitary small-sized (ie, very early stage) HCC than AFP and DCP. There was no significant correlation between serum PKCδ and AFP/DCP levels. Conclusion Serum PKCδ is a novel HCC biomarker, which is independent of and complementary to conventional markers. Specifically, PKCδ may be useful for detecting very early-stage or AFP/DCP double-negative HCC.
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Affiliation(s)
- Tsunekazu Oikawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Kohji Yamada
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Akihito Tsubota
- Core Research Facilities, Research Center for Medical Science, The Jikei University School of Medicine, Tokyo, Japan
| | - Chisato Saeki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Naoko Tago
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Chika Nakagawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Kaoru Ueda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Hiroshi Kamioka
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Tomohiko Taniai
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Koichiro Haruki
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Masanori Nakano
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuichi Torisu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Toru Ikegami
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo, Japan
| | - Masayuki Saruta
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
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12
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Yamada K, Kizawa R, Yoshida A, Koizumi R, Motohashi S, Shimoyama Y, Hannya Y, Yoshida S, Oikawa T, Shimoda M, Yoshida K. Extracellular PKCδ signals to EGF receptor for tumor proliferation in liver cancer cells. Cancer Sci 2022; 113:2378-2385. [PMID: 35490382 PMCID: PMC9277411 DOI: 10.1111/cas.15386] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 12/24/2022] Open
Abstract
Protein kinase C delta (PKCδ) is a multifunctional PKC family member and has been implicated in many types of cancers, including liver cancer. Recently, we have reported that PKCδ is secreted from liver cancer cells, and involved in cell proliferation and tumor growth. However, it remains unclear whether the extracellular PKCδ directly regulates cell surface growth factor receptors. Here, we identify epidermal growth factor receptor (EGFR) as a novel interacting protein of the cell surface PKCδ in liver cancer cells. Imaging studies showed that secreted PKCδ interacted with EGFR‐expressing cells in both autocrine and paracrine manners. Biochemical analysis revealed that PKCδ bound to the extracellular domain of EGFR. We further found that a part of the amino acid sequence on the C‐terminal region of PKCδ was similar to the putative EGFR binding site of EGF. In this regard, the point mutant of PKCδ in the binding site lacked the ability to bind to the extracellular domain of EGFR. Upon an extracellular PKCδ‐EGFR association, ERK1/2 activation, downstream of EGFR signaling, was apparently induced in liver cancer cells. This study indicates that extracellular PKCδ behaves as a growth factor and provides a molecular basis for extracellular PKCδ‐targeting therapy for liver cancer.
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Affiliation(s)
- Kohji Yamada
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Ryusuke Kizawa
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Ayano Yoshida
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Rei Koizumi
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Saya Motohashi
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Yuya Shimoyama
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Yoshito Hannya
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Saishu Yoshida
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Tsunekazu Oikawa
- Division of Gastroenterology and Hepatology Department of Internal Medicine The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Masayuki Shimoda
- Department of Pathology The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry The Jikei University School of Medicine 3‐25‐8 Nishi‐Shinbashi, Minato‐ku Tokyo 105‐8461 Japan
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13
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Yamada K, Yoshida K. Multiple subcellular localizations and functions of protein kinase Cδ in liver cancer. World J Gastroenterol 2022; 28:188-198. [PMID: 35110944 PMCID: PMC8776529 DOI: 10.3748/wjg.v28.i2.188] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/25/2021] [Accepted: 12/31/2021] [Indexed: 02/06/2023] Open
Abstract
Protein kinase Cδ (PKCδ) is a member of the PKC family, and its implications have been reported in various biological and cancerous processes, including cell proliferation, cell death, tumor suppression, and tumor progression. In liver cancer cells, accumulating reports show the bi-functional regulation of PKCδ in cell death and survival. PKCδ function is defined by various factors, such as phosphorylation, catalytic domain cleavage, and subcellular localization. PKCδ has multiple intracellular distribution patterns, ranging from the cytosol to the nucleus. We recently found a unique extracellular localization of PKCδ in liver cancer and its growth factor-like function in liver cancer cells. In this review, we first discuss the structural features of PKCδ and then focus on the functional diversity of PKCδ based on its subcellular localization, such as the nucleus, cell surface, and extracellular space. These findings improve our knowledge of PKCδ involvement in the progression of liver cancer.
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Affiliation(s)
- Kohji Yamada
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Kiyotsugu Yoshida
- Department of Biochemistry, The Jikei University School of Medicine, Tokyo 105-8461, Japan
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Ye X, Qiu R, He X, Hu Z, Zheng F, Huang X, Xie X, Chen F, Ou H, Lin G. miR-647 inhibits hepatocellular carcinoma cell progression by targeting protein tyrosine phosphatase receptor type F. Bioengineered 2022; 13:1090-1102. [PMID: 34969357 PMCID: PMC8805897 DOI: 10.1080/21655979.2021.2017628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/07/2021] [Indexed: 11/02/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a kind of malignant tumor derived from hepatocytes and hepatobiliary cells, and its occurrence is prevalent worldwide. Although medical technology is developing rapidly, the therapeutic efficacy of HCC is still poor. Emerging evidence manifests that microRNAs (miRNAs) play a crucial role in various cancers and have been regarded as cancer suppressor gene. However, the regulatory mechanisms mediated by miR-647 involved in HCC remain unclear. Hence, to clarify the regulatory mechanisms mediated by miR-647 in HCC, we studied the independent effects of miR-647 and explored protein tyrosine phosphatase receptor type F (PTPRF) in the constructed HCC cell line (HCV-huh7.5). Thereafter, we used dual-luciferase gene reporting and Western blot to investigate the relationship between PTPRF and miR-647. Furthermore, we studied the mechanism of miR-647 on PTPRF in HCV-huh7.5. We found that miR-647 could not only promote the proliferation and invasion of HCV-huh7.5 cells but also facilitate cell migration, while PTPRF has the opposite effect. Besides, the results of cell function experiment implied that the overexpression of miR-647 or inhibition of PTPFRF remarkably influenced the Erk signaling pathway, which could regulate cell proliferation, migration, and invasion. In addition, the dual luciferase reporting identified PTPRF as a direct target of miR-647. We further demonstrated that miR-647 inhibitor or PTPRF knockdown administration boosted HCV-huh7.5 cell proliferation, migration, and invasion by targeting PTPRF.These findings provided clues for the mechanism of miR-647 in promoting the biology of HCV-huh7.5 cells by inhibiting the expression level of PTPRF.
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Affiliation(s)
- Xiangyang Ye
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Rongxian Qiu
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Xiongzhi He
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Zhengting Hu
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Fengfeng Zheng
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Xiaogang Huang
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Xuemei Xie
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Feihua Chen
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Hangbing Ou
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
| | - Guoxian Lin
- Department of Infectious Diseases, Affiliated Hospital of Putian University, Putian, Fujian, China
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15
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Wu CH, Hsu FT, Chao TL, Lee YH, Kuo YC. Revealing the suppressive role of protein kinase C delta and p38 mitogen-activated protein kinase (MAPK)/NF-κB axis associates with lenvatinib-inhibited progression in hepatocellular carcinoma in vitro and in vivo. Biomed Pharmacother 2021; 145:112437. [PMID: 34864311 DOI: 10.1016/j.biopha.2021.112437] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 11/05/2021] [Accepted: 11/12/2021] [Indexed: 12/20/2022] Open
Abstract
Nuclear factor-kappa B (NF-κB), an oncogenic transcription factor, modulates tumor formation and progression by inducing the expression of oncogenes involved in proliferation, survival, angiogenesis, and metastasis. Oral multikinase inhibitors, such as sorafenib, regorafenib, and lenvatinib have been used for the treatment of hepatocellular carcinoma (HCC). Both sorafenib and regorafenib were shown to abolish the NF-κB-mediated progression of HCC. However, the effect of lenvatinib on NF-κB-mediated progression of HCC is ambiguous. Therefore, the primary purpose of the present study was to evaluate the inhibitory effect of lenvatinib and its inhibitory mechanism on the NF-κB-mediated progression of HCC in vitro and in vivo. Here, we used two HCC cell lines to identify the cytotoxicity, apoptosis and metastasis effect of lenvatinib. We also applied a Hep3B-bearing animal model to investigate the therapeutic efficacy of lenvatinib on in vivo model. An NF-κB translocation assay, NF-κB reporter gene assay, a Western blotting assay and immunohistochemistry staining were used to investigate the underlying mechanism by which lenvatinib acts on HCC. In this study, we demonstrated that lenvatinib induced extrinsic/intrinsic apoptosis and suppressed the metastasis of HCC both in vitro and in vivo. Lenvatinib may also suppress NF-κB translocation and activation. We also found both protein kinase C delta (PKC-δ) and p38 mitogen-activated protein kinase (MAPK) inactivation participated in lenvatinib-reduced NF-κB signaling. In conclusion, this study reveals that the suppression of PKC-δ, and the p38 MAPK/NF-κB axis is associated with the lenvatinib-inhibited progression of HCC in vitro and in vivo.
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Affiliation(s)
- Ching-Hsuan Wu
- Division of Hematology and Oncology, Department of Internal Medicine, Chang Bing Show Chwan Memorial Hospital, Changhua 505, Taiwan, ROC
| | - Fei-Ting Hsu
- Department of Biological Science and Technology, China Medical University, Taichung 406, Taiwan, ROC.
| | - Tsu-Lan Chao
- Department of Biological Science and Technology, China Medical University, Taichung 406, Taiwan, ROC
| | - Yuan-Hao Lee
- Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yu-Cheng Kuo
- School of Medicine, College of Medicine, China Medical University, Taichung, ROC; Department of Radiation Oncology, China Medical University Hsinchu Hospital, Hsinchu, Taiwan, ROC.
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Cieslikowski WA, Haber T, Krajnak S, Anic K, Hasenburg A, Mager R, Thüroff JW, Brenner W. Co-administration of tyrosine kinase inhibitors with rottlerin in metastatic prostate cancer cells. EXCLI JOURNAL 2021; 20:1585-1596. [PMID: 34924906 PMCID: PMC8678056 DOI: 10.17179/excli2021-3980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 11/16/2021] [Indexed: 11/12/2022]
Abstract
After prostatectomy due to prostate carcinoma, patients often develop metastases. Although prostate cancer is susceptible to hormonal manipulation, many patients become castration-resistant. Therefore, new therapies are the focus of investigations. We analyzed the effect of the tyrosine kinase inhibitors (TKIs), sorafenib and sunitinib, in combination with rottlerin, a PKCδ inhibitor, on metastatic mechanisms in prostate carcinoma cells. LNCaP and PC-3 prostate carcinoma cells were treated with sorafenib or sunitinib alone at various concentrations (1-20 µM) or in combination with rottlerin (10 µM) for 24 h. Then, cell toxicity (MTT test) and cell proliferation (BrdU incorporation assay) were quantified. The study demonstrated a dose-dependent inhibitory effect of sorafenib and sunitinib on PC-3 and LNCaP cell activity and proliferation. Both agents showed significantly stronger cytotoxic effects in LNCaP cells. At the highest concentrations, sorafenib and sunitinib inhibited the viability of LNCaP cells up to 2 % and 31 %, respectively, and the viability of PC-3 cell line up to 20 % and 43 %, respectively. The proliferation of both cell lines was significantly stronger inhibited by sorafenib than by sunitinib. In LNCaP cells, sorafenib and sunitinib at the highest concentrations inhibited cell proliferation up to 46 % and 49 %, respectively, and the proliferation of PC-3 line up to 40 % and 47 %, respectively. Rottlerin reduced the viability and proliferation of PC3 cells to 81 % and 42 %, whereas the viability and proliferation of LNCaP cells were reduced to 25 % and 57 %, respectively. Sorafenib and sunitinib at low concentrations partly neutralized the inhibitory effect of rottlerin on cell viability and proliferation. On the other hand, in PC-3 cells, rottlerin reduced the inhibitory effects of sorafenib and sunitinib at the highest concentrations on cell viability from 20 % to 30 % and from 43 % to 61 %, respectively. An additive effect on cell activity was observed after treating LNCaP cells with both sunitinib at high concentrations and rottlerin. This combination increased the cytotoxic effect from 31 % to 13 % at the highest sunitinib concentration. Our results showed that monotherapy with sorafenib was the most efficient in both PCa cell lines. A marginally additive effect of rottlerin was only observed in LNCaP cells treated with sunitinib at a high concentration. Sorafenib and sunitinib reduced cell migration in PC-3 cells to 10 % and 32 % of untreated cells, respectively. Co-treatment with sorafenib/sunitinib and rottlerin did not result in a significantly stronger anti-migratory effect than the treatment with each TKI alone. Given the strong cytotoxic effect of TKIs, especially sorafenib, on LNCaP cells, the results of the migration assay in this line were severely biased and not considered in the analysis. Unlike in other malignancies, combination therapy with TKI and rottlerin seems not beneficial in prostate cancer. More promising seems to be monotherapy with rottlerin, but further studies are needed to confirm this observation.
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Affiliation(s)
- Wojciech A. Cieslikowski
- Department of Urology and Pediatric Urology, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany,Department of Urology, Poznan University of Medical Sciences, 61-701 Poznan, Poland,*To whom correspondence should be addressed: Wojciech A. Cieslikowski, Department of Urology, Poznan University of Medical Sciences, 61-701 Poznan, Poland, E-mail:
| | - Tobias Haber
- Department of Urology and Pediatric Urology, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Slavomir Krajnak
- Clinic for Obstetrics and Women's Health, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Katharina Anic
- Clinic for Obstetrics and Women's Health, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Annette Hasenburg
- Clinic for Obstetrics and Women's Health, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - René Mager
- Department of Urology and Pediatric Urology, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Joachim W. Thüroff
- Department of Urology and Pediatric Urology, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Walburgis Brenner
- Department of Urology and Pediatric Urology, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany,Clinic for Obstetrics and Women's Health, Johannes Gutenberg University Medical Center, Langenbeckstr. 1, 55131 Mainz, Germany
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