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Varlı M, Kim SJ, Noh MG, Kim YG, Ha HH, Kim KK, Kim H. KITENIN promotes aerobic glycolysis through PKM2 induction by upregulating the c-Myc/hnRNPs axis in colorectal cancer. Cell Biosci 2023; 13:146. [PMID: 37553596 PMCID: PMC10410973 DOI: 10.1186/s13578-023-01089-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/19/2023] [Indexed: 08/10/2023] Open
Abstract
PURPOSE The oncoprotein KAI1 C-terminal interacting tetraspanin (KITENIN; vang-like 1) promotes cell metastasis, invasion, and angiogenesis, resulting in shorter survival times in cancer patients. Here, we aimed to determine the effects of KITENIN on the energy metabolism of human colorectal cancer cells. EXPERIMENTAL DESIGN The effects of KITENIN on energy metabolism were evaluated using in vitro assays. The GEPIA web tool was used to extrapolate the clinical relevance of KITENIN in cancer cell metabolism. The bioavailability and effect of the disintegrator of KITENIN complex compounds were evaluated by LC-MS, in vivo animal assay. RESULTS KITENIN markedly upregulated the glycolytic proton efflux rate and aerobic glycolysis by increasing the expression of GLUT1, HK2, PKM2, and LDHA. β-catenin, CD44, CyclinD1 and HIF-1A, including c-Myc, were upregulated by KITENIN expression. In addition, KITENIN promoted nuclear PKM2 and PKM2-induced transactivation, which in turn, increased the expression of downstream mediators. This was found to be mediated through an effect of c-Myc on the transcription of hnRNP isoforms and a switch to the M2 isoform of pyruvate kinase, which increased aerobic glycolysis. The disintegration of KITENIN complex by silencing the KITENIN or MYO1D downregulated aerobic glycolysis. The disintegrator of KITENIN complex compound DKC1125 and its optimized form, DKC-C14S, exhibited the inhibition activity of KITENIN-mediated aerobic glycolysis in vitro and in vivo. CONCLUSIONS The oncoprotein KITENIN induces PKM2-mediated aerobic glycolysis by upregulating the c-Myc/hnRNPs axis.
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Affiliation(s)
- Mücahit Varlı
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam, 57922, Republic of Korea
| | - Sung Jin Kim
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam, 57922, Republic of Korea
- Department of Pharmacology, Chonnam National University Medical School, 160 Baekseoro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Myung-Giun Noh
- Department of Pathology, Chonnam National University Medical School, 160 Baekseoro, Dong-gu, Gwanju, 61469, Republic of Korea
| | - Yoon Gyoon Kim
- College of Pharmacy, Dankook University, 119 Dandaero, Dongnam-gu, 31116, Cheonan-si, Republic of Korea
| | - Hyung-Ho Ha
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam, 57922, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, 160 Baekseoro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam, 57922, Republic of Korea.
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Park SY, Kim SJ, To PK, Zhou R, Kim K, Kim KK, Jung C, Kim H. MicroRNA-122 targets δ-catenin to suppress the tumorigenic potential of prostate cancer cells. Am J Cancer Res 2022; 12:4853-4864. [PMID: 36381334 PMCID: PMC9641389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023] Open
Abstract
δ-Catenin is expressed abundantly in various human cancers, including prostate, brain, breast, and lung carcinomas, and is recognized as an oncogene that promotes cancer cell growth and tumorigenesis. Although several transcriptional and post-translational pathways for δ-catenin regulation have been identified in cancer cells, the potential effects of microRNA-mediated regulation remain elusive. Here, we used a δ-catenin 3'-UTR luciferase reporter assay to identify regulatory microRNAs. Subsequent bioinformatics analyses and molecular studies revealed that overexpression of miR-122 downregulated δ-catenin expression significantly via targeted binding to a seed sequence in the 3'-UTR region of δ-catenin, and suppressed the invasion, migration, and proliferation of prostate cancer cells in vitro. In a TRAMP-C2 mouse syngeneic prostate tumor model, stable expression of miR-122 decreased both δ-catenin expression and tumor growth. Mechanistically, overexpression of miR-122 inhibited the expression of δ-catenin-mediated downstream factors significantly in prostate cancer cells, including c-myc and cyclin D1. In cells overexpressing miR-122, there was no additive or synergistic effect of siRNA-mediated knockdown of δ-catenin on cell invasiveness, and overexpression of miR-122 alone had a more pronounced suppressive effect on cell invasion than knockdown of δ-catenin alone. These results suggest that miR-122 acts as tumor suppressor in prostate cancer, mainly by downregulating δ-catenin expression, but also by targeting other factors. Indeed, subsequent experiments showed that overexpression of miR-122 reduced the levels of the mRNAs encoding myc, snail, and VEGF in prostate cancer cells. Overall, our findings demonstrate that targeting of δ-catenin by miR-122 represses the motility and tumorigenesis of prostate cancer cells, indicating a tumor suppressive effect of this miRNA in prostate cancer.
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Affiliation(s)
- So-Yeon Park
- College of Pharmacy, Sunchon National UniversitySunchon 57922, Republic of Korea
| | - Sung Jin Kim
- College of Pharmacy, Sunchon National UniversitySunchon 57922, Republic of Korea
| | - Phuong Kim To
- Department of Anatomy, Chonnam National University Medical SchoolGwangju 61469, Republic of Korea
| | - Rui Zhou
- College of Pharmacy, Sunchon National UniversitySunchon 57922, Republic of Korea
| | - Kwonseop Kim
- College of Pharmacy, Chonnam National UniversityGwangju 61186, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical SchoolGwangju 61469, Republic of Korea
| | - Chaeyong Jung
- Department of Anatomy, Chonnam National University Medical SchoolGwangju 61469, Republic of Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National UniversitySunchon 57922, Republic of Korea
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Kim SJ, Sun EG, Bae JA, Park S, Hong CS, Park ZY, Kim H, Kim KK. A peptide interfering with the dimerization of oncogenic KITENIN protein and its stability suppresses colorectal tumour progression. Clin Transl Med 2022; 12:e871. [PMID: 35853101 PMCID: PMC9296036 DOI: 10.1002/ctm2.871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 12/22/2022] Open
Abstract
The stability of a protein, as well as its function and versatility, can be enhanced through oligomerization. KITENIN (KAI1 C‐terminal interacting tetraspanin) is known to promote the malignant progression of colorectal cancer (CRC). How KITENIN maintains its structural integrity and stability are largely unknown, however. Here we investigated the mechanisms regulating the stability of KITENIN with the aim of developing therapeutics blocking its oncogenic functions. We found that KITENIN formed a homo‐oligomeric complex and that the intracellular C‐terminal domain (KITENIN‐CTD) was needed for this oligomerization. Expression of the KITENIN‐CTD alone interfered with the formation of the KITENIN homodimer, and the amino acid sequence from 463 to 471 within the KITENIN‐CTD was the most effective. This sequence coupled with a cell‐penetrating peptide was named a KITENIN dimerization‐interfering peptide (KDIP). We next studied the mechanisms by which KDIP affected the stability of KITENIN. The KITENIN‐interacting protein myosin‐X (Myo10), which has oncogenic activity in several cancers, functioned as an effector to stabilize the KITENIN homodimer in the cis formation. Treatment with KDIP resulted in the disintegration of the homodimer via downregulation of Myo10, which led to increased binding of RACK1 to the exposed RACK1‐interacting motif (463–471 aa), and subsequent autophagy‐dependent degradation of KITENIN and reduced CRC cell invasion. Intravenous injection of KDIP significantly reduced the tumour burden in a syngeneic mouse tumour model and colorectal liver metastasis in an intrasplenic hepatic metastasis model. Collectively, our present results provide a new cancer therapeutic peptide for blocking colorectal liver metastasis, which acts by inducing the downregulation of Myo10 and specifically targeting the stability of the oncogenic KITENIN protein.
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Affiliation(s)
- Sung Jin Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Republic of Korea.,College of Pharmacy, Sunchon National University, Suncheon, Republic of Korea
| | - Eun Gene Sun
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jeong A Bae
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sehoon Park
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Chang-Soo Hong
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Zee-Yong Park
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, Suncheon, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Republic of Korea
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Ko YS, Kang H, Bae JA, Kim SJ, Kim N, Chung IJ, Moon KS, Rho JK, Kim H, Ha HH, Oh IJ, Kim KK. New strategy for suppressing the growth of lung cancer cells harboring mutations in the ATP-binding region of EGFR by targeting the molecular motor MYO1D. Clin Transl Med 2021; 11:e515. [PMID: 34459138 PMCID: PMC8343539 DOI: 10.1002/ctm2.515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 11/11/2022] Open
Affiliation(s)
- Yoo-Seung Ko
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Korea.,Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun, 58128, Korea
| | - Hyuno Kang
- Division of Analytical Science, Korea Basic Science Institute, Daejeon, 34133, Korea
| | - Jeong A Bae
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Korea.,Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun, 58128, Korea
| | - Sung Jin Kim
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Korea.,Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun, 58128, Korea
| | - Nacksung Kim
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Korea
| | - Ik Joo Chung
- Department of Internal Medicine, Chonnam National University Medical School, Hwasun, 58128, Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Medical School, Hwasun, 58128, Korea
| | - Jin Kyung Rho
- Department of Convergence Medicine, University of Ulsan, College of Medicine, Seoul, 05505, Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, Sunchon, 57922, Korea
| | - Hyung-Ho Ha
- College of Pharmacy, Sunchon National University, Sunchon, 57922, Korea
| | - In-Jae Oh
- Department of Internal Medicine, Chonnam National University Medical School, Hwasun, 58128, Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Korea.,Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun, 58128, Korea
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Kim JH, Kim K, Kim I, Seong S, Kook H, Kim KK, Koh JT, Kim N. Bifunctional Role of CrkL during Bone Remodeling. Int J Mol Sci 2021; 22:ijms22137007. [PMID: 34209812 PMCID: PMC8269069 DOI: 10.3390/ijms22137007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/15/2021] [Accepted: 06/23/2021] [Indexed: 11/16/2022] Open
Abstract
Coupled signaling between bone-forming osteoblasts and bone-resorbing osteoclasts is crucial to the maintenance of bone homeostasis. We previously reported that v-crk avian sarcoma virus CT10 oncogene homolog-like (CrkL), which belongs to the Crk family of adaptors, inhibits bone morphogenetic protein 2 (BMP2)-mediated osteoblast differentiation, while enhancing receptor activator of nuclear factor kappa-B ligand (RANKL)-induced osteoclast differentiation. In this study, we investigated whether CrkL can also regulate the coupling signals between osteoblasts and osteoclasts, facilitating bone homeostasis. Osteoblastic CrkL strongly decreased RANKL expression through its inhibition of runt-related transcription factor 2 (Runx2) transcription. Reduction in RANKL expression by CrkL in osteoblasts resulted in the inhibition of not only osteoblast-dependent osteoclast differentiation but also osteoclast-dependent osteoblast differentiation, suggesting that CrkL participates in the coupling signals between osteoblasts and osteoclasts via its regulation of RANKL expression. Therefore, CrkL bifunctionally regulates osteoclast differentiation through both a direct and indirect mechanism while it inhibits osteoblast differentiation through its blockade of both BMP2 and RANKL reverse signaling pathways. Collectively, these data suggest that CrkL is involved in bone homeostasis, where it helps to regulate the complex interactions of the osteoblasts, osteoclasts, and their coupling signals.
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Affiliation(s)
- Jung Ha Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Korea; (J.H.K.); (K.K.); (I.K.); (S.S.); (H.K.); (K.K.K.)
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
| | - Kabsun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Korea; (J.H.K.); (K.K.); (I.K.); (S.S.); (H.K.); (K.K.K.)
| | - Inyoung Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Korea; (J.H.K.); (K.K.); (I.K.); (S.S.); (H.K.); (K.K.K.)
| | - Semun Seong
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Korea; (J.H.K.); (K.K.); (I.K.); (S.S.); (H.K.); (K.K.K.)
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
| | - Hyun Kook
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Korea; (J.H.K.); (K.K.); (I.K.); (S.S.); (H.K.); (K.K.K.)
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Korea; (J.H.K.); (K.K.); (I.K.); (S.S.); (H.K.); (K.K.K.)
| | - Jeong-Tae Koh
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Nacksung Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Korea; (J.H.K.); (K.K.); (I.K.); (S.S.); (H.K.); (K.K.K.)
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
- Correspondence: ; Tel.: +82-61-379-2835
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Zhou R, Yang Y, Park SY, Nguyen TT, Seo YW, Lee KH, Lee JH, Kim KK, Hur JS, Kim H. Author Correction: The lichen secondary metabolite atranorin suppresses lung cancer cell motility and tumorigenesis. Sci Rep 2021; 11:13132. [PMID: 34140534 PMCID: PMC8211669 DOI: 10.1038/s41598-021-91474-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Rui Zhou
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Yi Yang
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.,Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
| | - So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Thanh Thi Nguyen
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.,Faculty of Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot, Vietnam
| | - Young-Woo Seo
- Korea Basic Science Institute, Gwangju Center, Gwangju, Republic of Korea
| | - Kyung Hwa Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jae Hyuk Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
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Bae JA, Bae WK, Kim SJ, Ko YS, Kim KY, Park SY, Yu YH, Kim EA, Chung IJ, Kim H, Ha HH, Kim KK. A new KSRP-binding compound suppresses distant metastasis of colorectal cancer by targeting the oncogenic KITENIN complex. Mol Cancer 2021; 20:78. [PMID: 34039363 PMCID: PMC8152081 DOI: 10.1186/s12943-021-01368-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/30/2021] [Indexed: 12/12/2022] Open
Abstract
Background Distant metastasis is the major cause of death in patients with colorectal cancer (CRC). Previously, we identified KITENIN as a metastasis-enhancing gene and suggested that the oncogenic KITENIN complex is involved in metastatic dissemination of KITENIN-overexpressing CRC cells. Here, we attempted to find substances targeting the KITENIN complex and test their ability to suppress distant metastasis of CRC. Methods We screened a small-molecule compound library to find candidate substances suppressing the KITENIN complex in CRC cells. We selected a candidate compound and examined its effects on the KITENIN complex and distant metastasis through in vitro assays, a molecular docking model, and in vivo tumor models. Results Among several compounds, we identified DKC1125 (Disintegrator of KITENIN Complex #1125) as the best candidate. DKC1125 specifically suppressed KITENIN gain of function. After binding KH-type splicing regulatory protein (KSRP), DKC1125 degraded KITENIN and Dvl2 by recruiting RACK1 and miRNA-124, leading to the disintegration of the functional KITENIN–KSRP–RACK1–Dvl2 complex. A computer docking model suggested that DKC1125 specifically interacted with the binding pocket of the fourth KH-domain of KSRP. KITENIN-overexpressing CRC cells deregulated certain microRNAs and were resistant to 5-fluorouracil, oxaliplatin, and cetuximab. DKC1125 restored sensitivity to these drugs by normalizing expression of the deregulated microRNAs, including miRNA-124. DKC1125 effectively suppressed colorectal liver metastasis in a mouse model. Interestingly, the combination of DKC1125 with 5-fluorouracil suppressed metastasis more effectively than either drug alone. Conclusion DKC1125 targets the KITENIN complex and could therefore be used as a novel therapeutic to suppress liver metastasis in CRC expressing high levels of KITENIN. Supplementary Information The online version contains supplementary material available at 10.1186/s12943-021-01368-w.
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Affiliation(s)
- Jeong A Bae
- Department of Pharmacology, Chonnam National University Medical School, Baekseoro 160, Dong-Ku, Gwangju, 61469, South Korea
| | - Woo Kyun Bae
- Department of Hematology-Oncology, Chonnam National University Medical School, Baekseoro 160, Dong-Ku, Gwangju, 61469, South Korea.,Immunotherapy Innovation Center, Chonnam National University Medical School and Hwasun Hospital, Hwasun, South Korea
| | - Sung Jin Kim
- Department of Pharmacology, Chonnam National University Medical School, Baekseoro 160, Dong-Ku, Gwangju, 61469, South Korea
| | - Yoo-Seung Ko
- Department of Pharmacology, Chonnam National University Medical School, Baekseoro 160, Dong-Ku, Gwangju, 61469, South Korea
| | - Keon Young Kim
- Department of Pharmacology, Chonnam National University Medical School, Baekseoro 160, Dong-Ku, Gwangju, 61469, South Korea
| | - So-Yeon Park
- College of Pharmacy, Sunchon National University, Jungangro 225, Sunchon, 57922, South Korea
| | - Young Hyun Yu
- College of Pharmacy, Sunchon National University, Jungangro 225, Sunchon, 57922, South Korea
| | - Eun Ae Kim
- College of Pharmacy, Chosun University, Gwangju, South Korea
| | - Ik Joo Chung
- Department of Hematology-Oncology, Chonnam National University Medical School, Baekseoro 160, Dong-Ku, Gwangju, 61469, South Korea.,Immunotherapy Innovation Center, Chonnam National University Medical School and Hwasun Hospital, Hwasun, South Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, Jungangro 225, Sunchon, 57922, South Korea.
| | - Hyung-Ho Ha
- College of Pharmacy, Sunchon National University, Jungangro 225, Sunchon, 57922, South Korea.
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Baekseoro 160, Dong-Ku, Gwangju, 61469, South Korea.
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Ko YS, Bae JA, Kim KY, Kim SJ, Sun EG, Lee KH, Kim N, Kang H, Seo YW, Kim H, Chung IJ, Kim KK. Correction to: MYO1D binds with kinase domain of the EGFR family to anchor them to plasma membrane before their activation and contributes carcinogenesis. Oncogene 2021; 40:3471-3472. [PMID: 33883693 DOI: 10.1038/s41388-021-01675-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yoo-Seung Ko
- Departments of Pharmacology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Jeong A Bae
- Departments of Pharmacology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Keon Young Kim
- Departments of Pharmacology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Sung Jin Kim
- Departments of Pharmacology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Eun Gene Sun
- Departments of Hematology-Oncology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Kyung Hwa Lee
- Departments of Pathology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Nacksung Kim
- Departments of Pharmacology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Hyuno Kang
- Korea Basic Science Institute, Gwangju Center, Gwangju, 61186, Korea
| | - Young-Woo Seo
- Korea Basic Science Institute, Gwangju Center, Gwangju, 61186, Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, Sunchon, 57922, North Korea
| | - Ik Joo Chung
- Departments of Hematology-Oncology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Kyung Keun Kim
- Departments of Pharmacology, Chonnam National University Medical School, Gwangju, 61469, Korea.
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Taş İ, Han J, Park SY, Yang Y, Zhou R, Gamage CDB, Nguyen TV, Lee JY, Choi YJ, Yu YH, Moon KS, Kim KK, Ha HH, Kim SK, Hur JS, Kim H. Corrigendum to: 'Physciosporin suppresses the proliferation, motility and tumorigenesis of colorectal cancer cells' Phytomedicine 56 (2019) 10-20. Phytomedicine 2021; 82:153464. [PMID: 33487520 DOI: 10.1016/j.phymed.2021.153464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- İsa Taş
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea; College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Jin Han
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Yi Yang
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea; College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Rui Zhou
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Chathurika D B Gamage
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea; College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Tru Van Nguyen
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Ji-Yoon Lee
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Yong Jae Choi
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Young Hyun Yu
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Hwasun Hospital and Medical School, Hwasun-gun, Jeollanam-do, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea
| | - Hyung-Ho Ha
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Sang Kyum Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
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Hong CS, Sun EG, Choi JN, Kim DH, Kim JH, Ryu KH, Shim HJ, Hwang JE, Bae WK, Kim HR, Kim KK, Jung C, Chung IJ, Cho SH. Fibroblast growth factor receptor 4 increases epidermal growth factor receptor (EGFR) signaling by inducing amphiregulin expression and attenuates response to EGFR inhibitors in colon cancer. Cancer Sci 2020; 111:3268-3278. [PMID: 32533590 PMCID: PMC7469799 DOI: 10.1111/cas.14526] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 06/03/2020] [Accepted: 06/06/2020] [Indexed: 02/06/2023] Open
Abstract
Fibroblast growth factor receptor 4 (FGFR4) is known to induce cancer cell proliferation, invasion, and antiapoptosis through activation of RAS/RAF/ERK and PI3K/AKT pathways, which are also known as major molecular bases of colon cancer carcinogenesis related with epidermal growth factor receptor (EGFR) signaling. However, the interaction between FGFR4 and EGFR signaling in regard to colon cancer progression is unclear. Here, we investigated a potential cross‐talk between FGFR4 and EGFR, and the effect of anti‐EGFR therapy in colon cancer treatment. To explore the biological roles of FGFR4 in cancer progression, RNA sequencing was carried out using FGFR4 transfected colon cell lines. Gene ontology data showed the upregulation of genes related to EGFR signaling, and we identified that FGFR4 overexpression secretes EGFR ligands such as amphiregulin (AREG) with consequent activation of EGFR and ErbB3. This result was also shown in in vivo study and the cooperative interaction between EGFR and FGFR4 promoted tumor growth. In addition, FGFR4 overexpression reduced cetuximab‐induced cytotoxicity and the combination of FGFR4 inhibitor (BLU9931) and cetuximab showed profound antitumor effect compared to cetuximab alone. Clinically, we found the positive correlation between FGFR4 and AREG expression in tumor tissue, but not in normal tissue, from colon cancer patients and these expressions were significantly correlated with poor overall survival in patients treated with cetuximab. Therefore, our results provide the novel mechanism of FGFR4 in connection with EGFR activation and the combination of FGFR4 inhibitor and cetuximab could be a promising therapeutic option to achieve the optimal response to anti‐EGFR therapy in colon cancer.
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Affiliation(s)
- Chang-Soo Hong
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Eun-Gene Sun
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Ji-Na Choi
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Dae-Hwan Kim
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Jo-Heon Kim
- Department of Pathology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Kyung-Hyun Ryu
- Department of Biological Science, Sookmyung Women's University, Seoul, Korea
| | - Hyun-Jeong Shim
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Jun-Eul Hwang
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Woo-Kyun Bae
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun, Korea
| | - Hyeong-Rok Kim
- Department of Surgery, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, Korea
| | - Chaeyong Jung
- Department of Anatomy, Chonnam National University Medical School, Hwasun, Korea
| | - Ik-Joo Chung
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun, Korea
| | - Sang-Hee Cho
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun, Korea
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11
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Ko YS, Bae JA, Kim KY, Kim SJ, Sun EG, Lee KH, Kim N, Kang H, Seo YW, Kim H, Chung IJ, Kim KK. MYO1D binds with kinase domain of the EGFR family to anchor them to plasma membrane before their activation and contributes carcinogenesis. Oncogene 2019; 38:7416-7432. [DOI: 10.1038/s41388-019-0954-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 07/26/2019] [Accepted: 08/02/2019] [Indexed: 12/13/2022]
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12
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Yang Y, Bae WK, Lee KH, Moon KS, Park SY, Zhou R, Taş I, Gamage C, Lee S, Jung C, Kim KK, Ha HH, Kim H. Abstract 2011: Potassium usnate inhibits invasion and metastasis in colorectal cancer: Implication of clinical application of a water-soluble form of usnic acid in anticancer therapy. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-2011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Usnic acid (UA), a lichen secondary substance, has considerable anticancer activity in vitro, whereas its effect in vivo is limited. Here, potassium usnate (KU) was prepared by the salinization of UA to enhance its water solubility. KU showed increased bioavailability compared with UA in the tumor, liver, and plasma of a CT26 syngeneic mouse tumor xenograft model after oral administration, as determined by LC-MS/MS analysis. KU exhibited potent anticancer effects on colorectal cancer cells and inhibited liver metastasis in an orthotopic murine colorectal cancer model. KU treatment downregulated the epithelial-mesenchymal markers Twist, Snail, and Slug and the metastasis-related genes CAPN1, CDC42, CFL1, IGF1, WASF1, and WASL in cells and tumor tissues. The present results suggest the potential application of the water-soluble form of UA, KU, in anticancer therapy.
Citation Format: Yi Yang, Woo Kyun Bae, Kyung Hwa Lee, Kyung-Sub Moon, So-Yeon Park, Rui Zhou, Isa Taş, Chathurika Gamage, Sueun Lee, Chaeyong Jung, Kyung Keun Kim, Hyung-Ho Ha, Hangun Kim. Potassium usnate inhibits invasion and metastasis in colorectal cancer: Implication of clinical application of a water-soluble form of usnic acid in anticancer therapy [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 2011.
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Affiliation(s)
- Yi Yang
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Woo Kyun Bae
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Kyung Hwa Lee
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Kyung-Sub Moon
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - So-Yeon Park
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Rui Zhou
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Isa Taş
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | | | - Sueun Lee
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Chaeyong Jung
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Kyung Keun Kim
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Hyung-Ho Ha
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Hangun Kim
- 1Sunchon National Univ., Sunchon, Republic of Korea
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Gamage CDB, Park SY, Yang Y, Zhou R, Taş İ, Bae WK, Kim KK, Shim JH, Kim E, Yoon G, Kim H. Deoxypodophyllotoxin Exerts Anti-Cancer Effects on Colorectal Cancer Cells Through Induction of Apoptosis and Suppression of Tumorigenesis. Int J Mol Sci 2019; 20:E2612. [PMID: 31141929 PMCID: PMC6601030 DOI: 10.3390/ijms20112612] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/24/2019] [Accepted: 05/24/2019] [Indexed: 02/01/2023] Open
Abstract
Deoxypodophyllotoxin (DPT) is a cyclolignan compound that exerts anti-cancer effects against various types of cancers. DPT induces apoptosis and inhibits the growth of breast, brain, prostate, gastric, lung, and cervical tumors. In this study, we sought to determine the effect of DPT on cell proliferation, apoptosis, motility, and tumorigenesis of three colorectal cancer (CRC) cell lines: HT29, DLD1, and Caco2. DPT inhibited the proliferation of these cells. Specifically, the compound-induced mitotic arrest in CRC cells by destabilizing microtubules and activating the mitochondrial apoptotic pathway via regulation of B-cell lymphoma 2 (Bcl-2) family proteins (increasing Bcl-2 associated X (BAX) and decreasing B-cell lymphoma-extra-large (Bcl-xL)) ultimately led to caspase-mediated apoptosis. In addition, DPT inhibited tumorigenesis in vitro, and in vivo skin xenograft experiments revealed that DPT significantly decreased tumor size and tumor weight. Taken together, our results suggest DPT to be a potent compound that is suitable for further exploration as a novel chemotherapeutic for human CRC.
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Affiliation(s)
- Chathurika D B Gamage
- College of Pharmacy and Research Institute of Life and Pharmaeutical Sciences, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaeutical Sciences, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Yi Yang
- College of Pharmacy and Research Institute of Life and Pharmaeutical Sciences, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Rui Zhou
- College of Pharmacy and Research Institute of Life and Pharmaeutical Sciences, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - İsa Taş
- College of Pharmacy and Research Institute of Life and Pharmaeutical Sciences, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Woo Kyun Bae
- Department of Internal Medicine, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
| | - Jung-Hyun Shim
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, 1666 Yeongsan-ro, muan, Jeonnam 58554, Korea.
| | - Eunae Kim
- College of Pharmacy, Chosun University, 309 Philmun-daero, Dong-gu, Gwangju 61452, Korea.
| | - Goo Yoon
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, 1666 Yeongsan-ro, muan, Jeonnam 58554, Korea.
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaeutical Sciences, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
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Kim CW, Oh ET, Kim JM, Park JS, Lee DH, Lee JS, Kim KK, Park HJ. Corrigendum to "Hypoxia-induced microRNA-590-5p promotes colorectal cancer progression by modulating matrix metalloproteinase activity" [Cancer Lett. 416 (2018) 31-41]. Cancer Lett 2019; 455:73. [PMID: 31060874 DOI: 10.1016/j.canlet.2019.04.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Chan Woo Kim
- Department of Microbiology, College of Medicine, Inha University, Incheon, 22212, Republic of Korea; Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Eun-Taex Oh
- Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon, 22212, Republic of Korea; Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, 22212, Republic of Korea
| | - Joon Mee Kim
- Department of Pathology, College of Medicine, Inha University, Incheon, 400-712, Republic of Korea
| | - Jin-Seok Park
- Department of Internal Medicine, Inha University School of Medicine, Incheon, Republic of Korea
| | - Don Haeng Lee
- Gastroenterology and Hepatology, The National Center of Efficacy Evaluation for the Development of Health Products Targeting Digestive Disorders (NCEED), Inha University School of Medicine, Incheon, Republic of Korea
| | - Jae-Seon Lee
- Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon, 22212, Republic of Korea; Department of Molecular Medicine, Inha University College of Medicine, Incheon, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Hak-Dong 5, Dong-Ku, Kwangju, 61469, Republic of Korea
| | - Heon Joo Park
- Department of Microbiology, College of Medicine, Inha University, Incheon, 22212, Republic of Korea; Hypoxia-related Disease Research Center, College of Medicine, Inha University, Incheon, 22212, Republic of Korea.
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15
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Taş İ, Han J, Park SY, Yang Y, Zhou R, Gamage CDB, Van Nguyen T, Lee JY, Choi YJ, Yu YH, Moon KS, Kim KK, Ha HH, Kim SK, Hur JS, Kim H. Physciosporin suppresses the proliferation, motility and tumourigenesis of colorectal cancer cells. Phytomedicine 2019; 56:10-20. [PMID: 30668330 DOI: 10.1016/j.phymed.2018.09.219] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/18/2018] [Accepted: 09/25/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Lichens, which represent symbiotic associations of fungi and algae, are potential sources of numerous natural products. Physciosporin (PHY) is a potent secondary metabolite found in lichens and was recently reported to inhibit the motility of lung cancer cells via novel mechanisms. PURPOSE The present study investigated the anticancer potential of PHY on colorectal cancer (CRC) cells. METHODS PHY was isolated from lichen extract by preparative TLC. The effect of PHY on cell viability, motility and tumourigenicity was elucidated by MTT assay, hoechst staining, flow cytometric analysis, transwell invasion and migration assay, soft agar colony formation assay, Western blotting, qRT-PCR and PCR array in vitro as well as tumorigenicity study in vivo. RESULTS PHY decreased the viability of various CRC cell lines (Caco2, CT26, DLD1, HCT116 and SW620). Moreover, PHY elicited cytotoxic effects by inducing apoptosis at toxic concentrations. At non-toxic concentrations, PHY dose-dependently suppressed the invasion, migration and colony formation of CRC cells. PHY inhibited the motility of CRC cells by suppressing epithelial-mesenchymal transition and downregulating actin-based motility markers. In addition, PHY downregulated β-catenin and its downstream target genes cyclin-D1 and c-Myc. Moreover, PHY modulated KAI1 C-terminal-interacting tetraspanin and KAI1 expression, and downregulated the downstream transcription factors c-jun and c-fos. Finally, PHY administration showed considerable bioavailability and effectively decreased the growth of CRC xenografts in mice without causing toxicity. CONCLUSION PHY suppresses the growth and motility of CRC cells via novel mechanisms.
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Affiliation(s)
- İsa Taş
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea; Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Jin Han
- Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - So-Yeon Park
- Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Yi Yang
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea; Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Rui Zhou
- Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Chathurika D B Gamage
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea; Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Tru Van Nguyen
- Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Ji-Yoon Lee
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Yong Jae Choi
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Young Hyun Yu
- Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Hwasun Hospital and Medical School, Hwasun-gun, Jeollanam-do, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea
| | - Hyung-Ho Ha
- Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Sang Kyum Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.
| | - Hangun Kim
- Collage of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
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Zhou R, Yang Y, Park SY, Seo YW, Jung SC, Kim KK, Kim K, Kim H. p300/CBP-associated factor promotes autophagic degradation of δ-catenin through acetylation and decreases prostate cancer tumorigenicity. Sci Rep 2019; 9:3351. [PMID: 30833716 PMCID: PMC6399259 DOI: 10.1038/s41598-019-40238-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 02/12/2019] [Indexed: 01/21/2023] Open
Abstract
δ-Catenin shares common binding partners with β-catenin. As acetylation and deacetylation regulate β-catenin stability, we searched for histone acetyltransferases (HATs) or histone deacetylases (HDACs) affecting δ-catenin acetylation status and protein levels. We showed that p300/CBP-associated factor (PCAF) directly bound to and acetylated δ-catenin, whereas several class I and class II HDACs reversed this effect. Unlike β-catenin, δ-catenin was downregulated by PCAF-mediated acetylation and upregulated by HDAC-mediated deacetylation. The HDAC inhibitor trichostatin A attenuated HDAC1-mediated δ-catenin upregulation, whereas HAT or autophagy inhibitors, but not proteasome inhibitors, abolished PCAF-mediated δ-catenin downregulation. The results suggested that PCAF-mediated δ-catenin acetylation promotes its autophagic degradation in an Atg5/LC3-dependent manner. Deletions or point mutations identified several lysine residues in different δ-catenin domains involved in PCAF-mediated δ-catenin downregulation. PCAF overexpression in prostate cancer cells markedly reduced δ-catenin levels and suppressed cell growth and motility. PCAF-mediated δ-catenin downregulation inhibited E-cadherin processing and decreased the nuclear distribution of β-catenin, resulting in the suppression of β-catenin/LEF-1-mediated downstream effectors. These data demonstrate that PCAF downregulates δ-catenin by promoting its autophagic degradation and suppresses δ-catenin-mediated oncogenic signals.
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Affiliation(s)
- Rui Zhou
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Yi Yang
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Young-Woo Seo
- Korea Basic Science Institute, Gwangju Center, Gwangju, Republic of Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Sunchon, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kwonseop Kim
- College of Pharmacy and Research Institute for Drug Development, Chonnam National University, Gwangju, Republic of Korea
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
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Park SY, Yang Y, Zhou R, Jung SC, Bae WK, Chung IJ, Kim KK, Kim H. ErbB4/KITENIN-Mediated Signaling is Activated in Cetuximab-Resistant Colorectal Cancer Cells. J Nanosci Nanotechnol 2019; 19:1166-1171. [PMID: 30360226 DOI: 10.1166/jnn.2019.15899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
ErbB4/KITENIN signaling plays a role in epidermal growth factor receptor (EGFR)-independent EGF pathways mediating the invasiveness and tumorigenesis of colorectal cancer cells. However, whether alterations in ErbB4/KITENIN signaling play a role in the resistance to anti-EGFR therapy remains unclear. Here, we established cetuximab-resistant DLD1 and HT29 cells, and analyzed changes in ErbB4/KITENIN signaling. c-Jun, a final effector in ErbB4/KITENIN-mediated signaling, was upregulated, whereas KITENIN levels remained constant in both cetuximab-resistant cell lines. The phosphorylation of EGFR and ErbB4 was increased in cetuximab-resistant cells, suggesting that ErbB4/KITENIN signaling contributed to the acquisition of cetuximab resistance in the cells. Silencing of KITENIN and/or ErbB4 increased cetuximab sensitivity in cetuximab-resistant cells. This study is the first to report the activation of ErbB4/KITENIN-mediated signaling in cetuximab-resistant colorectal cancer cells and the potential clinical application of ErbB4/KITENIN-targeting therapy for overcoming anti-EGFR resistance.
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Affiliation(s)
- So-Yeon Park
- College of Pharmacy, Sunchon National University, Sunchon, Jeonnam, 57922, Korea
| | - Yi Yang
- College of Pharmacy, Sunchon National University, Sunchon, Jeonnam, 57922, Korea
| | - Rui Zhou
- College of Pharmacy, Sunchon National University, Sunchon, Jeonnam, 57922, Korea
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, Sunchon, Jeonnam, 57922, Korea
| | - Woo Kyun Bae
- Department of Hematology-Oncology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Ik Joo Chung
- Department of Hematology-Oncology, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, 61469, Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, Sunchon, Jeonnam, 57922, Korea
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Lee IS, Park SH, Choi SJ, Shim Y, Ahn SJ, Kim KW, Kim KK, Jeong YM, Choe YH. Diagnostic Performance of Multidetector Computerized Tomography in the Detection of Abdominal Complications Early and Late After Liver Transplantation: A 10-Year Experience. Transplant Proc 2018; 50:3673-3680. [PMID: 30577254 DOI: 10.1016/j.transproceed.2018.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 08/15/2018] [Accepted: 09/05/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Multidetector computerized tomography (MDCT) is considered to be a fast noninvasive diagnostic technique for the evaluation of postoperative complications in patients with liver transplantation (LT). However, its role has not been fully established in the diagnosis for detecting complications after liver transplantation. The aim of this work was to evaluate the diagnostic performance of MDCT for detecting abdominal complications in the early and late periods after LT. METHODS We retrospectively enrolled 75 patients who had undergone LT from March 2006 to January 2010, followed by MDCT from March 2006 to November 2017. Patients were divided into 2 groups according to the timing after LT: within the first 3 months (early period) or ≥3 months after LT (late period). We evaluated vascular, biliary, and other complications on MDCT. Angiography, endoscopic retrograde cholangiography, and percutaneous transhepatic cholangiography were used as reference standards. RESULTS We initially found 77 complications in 45 patients (60.0%) with the use of MDCT. After comparison with the reference standards, 83 complications were diagnosed in 49 patients (65.3%). Forty-seven complications (34 vascular, 10 biliary, 3 other complications) were diagnosed in 33 patients (44.0%) during the early period, and 36 complications (6 vascular, 20 biliary, 10 other complications) were detected in 27 patients (36.0%) in the late period. The sensitivity, specificity, and diagnostic accuracy of MDCT for diagnosing overall complications were, respectively, 93.6%, 90.2%, and 92.0% in the early period (for vascular complications: 97.1%, 92.6%, and 94.3%,; for biliary complications: 80.0%, 100%, and 97.7%) and 77.8%, 98.1%, and 89.8% in the late period (for vascular complications: 83.3%, 100%, and 98.9%; for biliary complications: 65.0%, 98.6%, and 90.9%). CONCLUSIONS Although MDCT in the late period should be interpreted with caution in patients with suspected biliary complication, MDCT is a reliable diagnostic technique for the identification of early and late abdominal complications after LT.
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Affiliation(s)
- I S Lee
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - S H Park
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea.
| | - S J Choi
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - Y Shim
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - S-J Ahn
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - K W Kim
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K K Kim
- Department of Surgery, Gil Medical Center, Gachon University, Incheon, Korea
| | - Y M Jeong
- Department of Radiology, Gil Medical Center, Gachon University, Incheon, Korea
| | - Y H Choe
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Yang Y, Bhosle SR, Yu YH, Park SY, Zhou R, Taş İ, Gamage CDB, Kim KK, Pereira I, Hur JS, Ha HH, Kim H. Tumidulin, a Lichen Secondary Metabolite, Decreases the Stemness Potential of Colorectal Cancer Cells. Molecules 2018; 23:molecules23112968. [PMID: 30441806 PMCID: PMC6278574 DOI: 10.3390/molecules23112968] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/06/2018] [Accepted: 11/12/2018] [Indexed: 12/21/2022] Open
Abstract
Lichens produce various unique chemicals that are used in the pharmaceutical industry. To screen for novel lichen secondary metabolites that inhibit the stemness potential of colorectal cancer cells, we tested acetone extracts of 11 lichen samples collected in Chile. Tumidulin, isolated from Niebla sp., reduced spheroid formation in CSC221, DLD1, and HT29 cells. In addition, mRNA expressions and protein levels of cancer stem markers aldehyde dehydrogenase-1 (ALDH1), cluster of differentiation 133 (CD133), CD44, Lgr5, and Musashi-1 were reduced after tumidulin treatment. Tumidulin decreased the transcriptional activity of the glioma-associated oncogene homolog zinc finger protein (Gli) promoter in reporter assays, and western blotting confirmed decreased Gli1, Gli2, and Smoothened (SMO) protein levels. Moreover, the tumidulin activity was not observed in the presence of Gli and SMO inhibitors. Together, these results demonstrate for the first time that tumidulin is a potent inhibitor of colorectal cancer cell stemness.
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Affiliation(s)
- Yi Yang
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
- Korean Lichen Res. Institute, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
- Medical Research Center for Gene Regulation, Brain Korea 21 Project, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
| | - Suresh R Bhosle
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Young Hyun Yu
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - So-Yeon Park
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Rui Zhou
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - İsa Taş
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
- Korean Lichen Res. Institute, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Chathurika D B Gamage
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
- Korean Lichen Res. Institute, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Brain Korea 21 Project, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
| | - Iris Pereira
- Institute of Biological Sciences, Universidad de Talca, Talca 747-721, Chile.
| | - Jae-Seoun Hur
- Korean Lichen Res. Institute, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Hyung-Ho Ha
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
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20
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Yoon S, Kook T, Min HK, Kwon DH, Cho YK, Kim M, Shin S, Joung H, Jeong SH, Lee S, Kang G, Park Y, Kim YS, Ahn Y, McMullen JR, Gergs U, Neumann J, Kim KK, Kim J, Nam KI, Kim YK, Kook H, Eom GH. PP2A negatively regulates the hypertrophic response by dephosphorylating HDAC2 S394 in the heart. Exp Mol Med 2018; 50:1-14. [PMID: 30050113 PMCID: PMC6062565 DOI: 10.1038/s12276-018-0121-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/20/2018] [Accepted: 03/27/2018] [Indexed: 12/23/2022] Open
Abstract
Cardiac hypertrophy occurs in response to increased hemodynamic demand and can progress to heart failure. Identifying the key regulators of this process is clinically important. Though it is thought that the phosphorylation of histone deacetylase (HDAC) 2 plays a crucial role in the development of pathological cardiac hypertrophy, the detailed mechanism by which this occurs remains unclear. Here, we performed immunoprecipitation and peptide pull-down assays to characterize the functional complex of HDAC2. Protein phosphatase (PP) 2 A was confirmed as a binding partner of HDAC2. PPP2CA, the catalytic subunit of PP2A, bound to HDAC2 and prevented its phosphorylation. Transient overexpression of PPP2CA specifically regulated both the phosphorylation of HDAC2 S394 and hypertrophy-associated HDAC2 activation. HDAC2 S394 phosphorylation was increased in a dose-dependent manner by PP2A inhibitors. Hypertrophic stresses, such as phenylephrine in vitro or pressure overload in vivo, caused PPP2CA to dissociate from HDAC2. Forced expression of PPP2CA negatively regulated the hypertrophic response, but PP2A inhibitors provoked hypertrophy. Adenoviral delivery of a phosphomimic HDAC2 mutant, adenovirus HDAC2 S394E, successfully blocked the anti-hypertrophic effect of adenovirus-PPP2CA, implicating HDAC2 S394 phosphorylation as a critical event for the anti-hypertrophic response. PPP2CA transgenic mice were protected against isoproterenol-induced cardiac hypertrophy and subsequent cardiac fibrosis, whereas simultaneous expression of HDAC2 S394E in the heart did induce hypertrophy. Taken together, our results suggest that PP2A is a critical regulator of HDAC2 activity and pathological cardiac hypertrophy and is a promising target for future therapeutic interventions.
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Affiliation(s)
- Somy Yoon
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Taewon Kook
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Hyun-Ki Min
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Basic Research Laboratory for Cardiac Remodeling Research Laboratory, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Duk-Hwa Kwon
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Basic Research Laboratory for Cardiac Remodeling Research Laboratory, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Young Kuk Cho
- Department of Pediatrics, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Mira Kim
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Sera Shin
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Basic Research Laboratory for Cardiac Remodeling Research Laboratory, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Hosouk Joung
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Basic Research Laboratory for Cardiac Remodeling Research Laboratory, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Seung Hoon Jeong
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Sumin Lee
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Gaeun Kang
- Division of Clinical Pharmacology, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Yunchul Park
- Division of Trauma Surgery, Department of Surgery, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Yong Sook Kim
- Biomedical Research Institute, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Youngkeun Ahn
- Department of Cardiology, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Julie R McMullen
- Baker Heart and Diabetes Institute, Melbourne, VIC, 3004, Australia
| | - Ulrich Gergs
- Institute of Pharmacology and Toxicology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, 06097, Halle, Germany
| | - Joachim Neumann
- Institute of Pharmacology and Toxicology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, 06097, Halle, Germany
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Jungchul Kim
- Division of Trauma Surgery, Department of Surgery, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Kwang-Il Nam
- Department of Anatomy, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Young-Kook Kim
- Basic Research Laboratory for Cardiac Remodeling Research Laboratory, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.,Department of Biochemistry, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea
| | - Hyun Kook
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea. .,Basic Research Laboratory for Cardiac Remodeling Research Laboratory, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.
| | - Gwang Hyeon Eom
- Department of Pharmacology, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea. .,Medical Research Center for Gene Regulation, Chonnam National University Medical School, Hwasun, 58128, Republic of Korea.
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21
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Park SY, Yang Y, Zhou R, Bae WK, Chung IJ, Kim KK, Kim H. Abstract LB-090: Activation of KITENIN/ErbB4-mediated signaling contributes to acquisition of cetuximab resistance in colorectal cancer cells. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-lb-090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
ErbB4/KITENIN signaling plays a role in epidermal growth factor receptor (EGFR)-independent EGF pathways mediating the invasiveness and tumorigenesis of colorectal cancer cells. However, whether alterations in ErbB4/KITENIN signaling play a role in the resistance to anti-EGFR therapy remains unclear. Here, we established cetuximab-resistant DLD1 and HT29 cells, and analyzed changes in ErbB4/KITENIN signaling. c-Jun, a final effector in ErbB4/KITENIN-mediated signaling, was upregulated, whereas KITENIN levels remained constant in both cetuximab-resistant cell lines. The phosphorylation of EGFR and ErbB4 was increased in cetuximab-resistant cells, suggesting that ErbB4/KITENIN signaling contributed to the acquisition of cetuximab resistance in the cells. Silencing of KITENIN and/or ErbB4 increased cetuximab sensitivity in cetuximab-resistant cells. This study is the first to report the activation of ErbB4/KITENIN-mediated signaling in cetuximab-resistant colorectal cancer cells and the potential clinical application of ErbB4/KITENIN-targeting therapy for overcoming anti-EGFR resistance.
Citation Format: So-Yeon Park, Yi Yang, Rui Zhou, Woo Kyun Bae, Ik Joo Chung, Kyung Keun Kim, Hangun Kim. Activation of KITENIN/ErbB4-mediated signaling contributes to acquisition of cetuximab resistance in colorectal cancer cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr LB-090.
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Affiliation(s)
- So-Yeon Park
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Yi Yang
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Rui Zhou
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Woo Kyun Bae
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Ik Joo Chung
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Kyung Keun Kim
- 2Chonnam National Univ. Medical School, Gwangju, Republic of Korea
| | - Hangun Kim
- 1Sunchon National Univ., Sunchon, Republic of Korea
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22
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Yang Y, Zhou R, Park SY, Kim KK, Kim H. Abstract 4198: 2-Hydroxymelatonin shows antitumor activity against human colorectal cancer cells. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-4198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
2-Hydroxymelatonin is a predominant hydroxylated melatonin metabolite in plants. To investigate whether it has potent cytotoxic effects on colorectal cancer cells, four colorectal cancer cell lines, Caco2, HCT116, DLD1, and CT26, were treated with 2-hydroxymelatonin and melatonin. 2-Hydroxymelatonin had a much lower IC50 value than melatonin in the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The cytotoxic effect of 2-hydroxymelatonin was much stronger than that of melatonin at high concentrations (1000 or 2000 μM) in HCT116, DLD1, and CT26 cells, but only at intermediate concentrations (250 or 500 μM) in Caco2 cells. The cytotoxicity of 2-hydroxymelatonin was induced through activation of the apoptotic signaling pathway, as confirmed by Hoechst staining and Annexin V-FITC/propidium iodide double labeling of cells treated with a lethal dose (1 mM). However, sub-lethal doses of 2-hydroxymelatonin inhibited the invasive ability of Caco2 cells. Epithelial-mesenchymal transition (EMT) markers were significantly regulated by 2-hydroxymelatonin. Overall, the anti-cancer activity of 2-hydroxymelatonin is more potent than that of melatonin. Taken together, 2-hydroxymelatonin exhibits potent anti-cancer activity against human colorectal cancer cells via induction of apoptosis and inhibition of EMT.
Citation Format: Yi Yang, Rui Zhou, So-Yeon Park, Kyung Keun Kim, Hangun Kim. 2-Hydroxymelatonin shows antitumor activity against human colorectal cancer cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 4198.
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Affiliation(s)
- Yi Yang
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Rui Zhou
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - So-Yeon Park
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Kyung Keun Kim
- 2Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hangun Kim
- 1Sunchon National Univ., Sunchon, Republic of Korea
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23
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Yang Y, Bae WK, Nam SJ, Jeong MH, Zhou R, Park SY, Taş İ, Hwang YH, Park MS, Chung IJ, Kim KK, Hur JS, Kim H. Acetonic extracts of the endolichenic fungus EL002332 isolated from Endocarpon pusillum exhibits anticancer activity in human gastric cancer cells. Phytomedicine 2018; 40:106-115. [PMID: 29496163 DOI: 10.1016/j.phymed.2018.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 12/28/2017] [Accepted: 01/14/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Endolichenic fungi are microbes that inhabit the thalli of lichens and produce various unique chemicals that can be used for pharmaceutical purposes. PURPOSE This study screened a library of endolichenic fungal extracts to identify novel anticancer agents capable of suppressing the tumorigenicity of human cancer cells. METHODS Active compounds were isolated from extracts of endolichenic fungi by column chromatography and reverse-phase HPLC. The anticancer effects of the extracts on cell viability was assessed with the use of MTT assay, Western blotting, fluorescence labeling of apoptotic cell, and flow cytometric analysis; and cell motility with the use of migration, invasion and soft agar colony-formation assay in vitro; and on skin and intraperitoneal mouse xenograft tumors in vivo were investigated. The therapeutic effects of the extract alone or in combination with the conventional chemoreagent docetaxel were analyzed by sulforhodamine B assay. RESULTS Acetone extracts of EL002332, isolated from Endocarpon pusillum collected in the China desert in 2010, showed selective cytotoxicity against AGS human gastric cancer cells and CT26 mouse colon cancer cells. An active pure compound named myC was isolated from mycelium acetone extracts in a liquid culture system and showed more potent cytotoxicity than crude extracts in the AGS cell line. Especially, myC greatly increased the apoptotic cell population at the IC50 concentration and activated apoptotic signaling by regulating Bcl2 family protein expression and caspase pathway activity. EL002332 crude extracts and myC decreased AGS cell motility at sub-lethal concentrations. In vivo skin and intraperitoneal xenograft tumor experiments showed that the size of tumors and the tumor score were significantly smaller in EL002332 crude extract-treated groups than in control groups. EL002332 crude extracts showed synergistic effects with docetaxel on the AGS and TMK1 cell lines. CONCLUSION The endolichenic fungus EL002332 has potential anticancer activity in gastric cancer and peritoneal carcinomatosis.
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Affiliation(s)
- Yi Yang
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea; Korean Lichen Research Institute, Sunchon National University, Sunchon, South Korea
| | - Woo Kyun Bae
- Department of Hematology-Oncology, Chonnam National University Medical School, Gwangju, South Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, South Korea
| | - Min-Hye Jeong
- Korean Lichen Research Institute, Sunchon National University, Sunchon, South Korea
| | - Rui Zhou
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea
| | - So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea
| | - İsa Taş
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea; Korean Lichen Research Institute, Sunchon National University, Sunchon, South Korea
| | - Yun-Ho Hwang
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea
| | - Myong-Suk Park
- Department of Hematology-Oncology, Chonnam National University Medical School, Gwangju, South Korea
| | - Ik Joo Chung
- Department of Hematology-Oncology, Chonnam National University Medical School, Gwangju, South Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, South Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon, South Korea.
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea.
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24
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Kim JH, Kim K, Kim I, Seong S, Nam KI, Kim KK, Kim N. Endoplasmic Reticulum-Bound Transcription Factor CREBH Stimulates RANKL-Induced Osteoclastogenesis. J Immunol 2018; 200:1661-1670. [PMID: 29378912 DOI: 10.4049/jimmunol.1701036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 12/28/2017] [Indexed: 11/19/2022]
Abstract
Endoplasmic reticulum (ER) stress is triggered by various metabolic factors, such as cholesterol and proinflammatory cytokines. Recent studies have revealed that ER stress is closely related to skeletal disorders, such as osteoporosis. However, the precise mechanism by which ER stress regulates osteoclast differentiation has not been elucidated. In this study, we identified an ER-bound transcription factor, cAMP response element-binding protein H (CREBH), as a downstream effector of ER stress during RANKL-induced osteoclast differentiation. RANKL induced mild ER stress and the simultaneous accumulation of active nuclear CREBH (CREBH-N) in the nucleus during osteoclastogenesis. Overexpression of CREBH-N in osteoclast precursors enhanced RANKL-induced osteoclast formation through NFATc1 upregulation. Inhibiting ER stress using a specific inhibitor attenuated the expression of osteoclast-related genes and CREBH activation. In addition, inhibition of reactive oxygen species using N-acetylcysteine attenuated ER stress, expression of osteoclast-specific marker genes, and RANKL-induced CREBH activation. Furthermore, inhibition of ER stress and CREBH signaling pathways using an ER stress-specific inhibitor or CREBH small interfering RNAs prevented RANKL-induced bone destruction in vivo. Taken together, our results suggest that reactive oxygen species/ER stress signaling-dependent CREBH activation plays an important role in RANKL-induced osteoclastogenesis. Therefore, inactivation of ER stress and CREBH signaling pathways may represent a new treatment strategy for osteoporosis.
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Affiliation(s)
- Jung Ha Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Kabsun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Inyoung Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Semun Seong
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Republic of Korea.,Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea; and
| | - Kwang-Il Nam
- Department of Anatomy, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Nacksung Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju 61469, Republic of Korea; .,Department of Biomedical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea; and
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25
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Park I, Kim YS, Sym SJ, Ahn HK, Kim KK, Park YH, Lee JN, Shin DB. Metastasectomy for recurrent or metastatic biliary tract cancers: A single center experience. Indian J Cancer 2017; 54:57-62. [PMID: 29199665 DOI: 10.4103/0019-509x.219581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
PURPOSE To assess efficacy or long-term result of metastasectomy for recurrent or metastatic biliary tract carcinoma (BTC), we conducted a retrospective review of the outcomes of metastasectomy for recurrent or metastatic BTCs, comprising intrahepatic cholangiocellular carcinoma (IHCCC), proximal and distal common bile duct cancer (pCBDC and dCBDC), gallbladder cancer (GBC), and ampulla of Vater cancer (AoVC). PATIENTS AND METHODS The clinicopathological features and outcomes of BTC patients who underwent surgical resection for the primary and metastatic disease at the Gachon University Gil Medical Centre from 2003 to 2013 were reviewed retrospectively. RESULTS We found 19 eligible patients. Primary sites were GBC (seven patients, 37%), IHCCC (five patients, 26%), dCBDC (three patients, 16%), pCBDC (two patients, 11%), and AoVC (two patients, 11%). Eight patients (42%) had synchronous metastasis whereas 11 (58%) had metachronous metastasis. The most common metastatic site was liver (nine patients, 47%), lymph node (nine patients, 47%), and peritoneum (three patients, 16%). Nine patients (47%) achieved R0 resection, whereas four (21%) and six (32%) patients had R1 and R2 resection, respectively. With a median follow-up period of 26.7 months, the estimated median overall survival (OS) was 18.2 months (95% confidence interval, 13.6-22.9 months). Lower Eastern Cooperative Oncology Group performance status (P = 0.023), metachronous metastasis (P = 0.04), absence of lymph node metastasis (P = 0.009), lower numbers of metastatic organs (P < 0.001), normal postoperative CA19-9 level (P = 0.034), and time from diagnosis to metastasectomy more than 1 year (P = 0.019) were identified as prognostic factors for a longer OS after metastasectomy. CONCLUSIONS For recurrent or metastatic BTCs, metastasectomy can be a viable option for selected patients.
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Affiliation(s)
- I Park
- Department of Internal Medicine, Division of Hematology-Oncology, Gachon University Gil Medical Center, Incheon, Korea
| | - Y S Kim
- Department of Internal Medicine, Division of Hematology-Oncology, Gachon University Gil Medical Center, Incheon, Korea
| | - S J Sym
- Department of Internal Medicine, Division of Hematology-Oncology, Gachon University Gil Medical Center, Incheon, Korea
| | - H K Ahn
- Department of Internal Medicine, Division of Hematology-Oncology, Gachon University Gil Medical Center, Incheon, Korea
| | - K K Kim
- Department of Surgery, Gachon University Gil Medical Center, Incheon, Korea
| | - Y H Park
- Department of Surgery, Gachon University Gil Medical Center, Incheon, Korea
| | - J N Lee
- Department of Surgery, Gachon University Gil Medical Center, Incheon, Korea
| | - D B Shin
- Department of Internal Medicine, Division of Hematology-Oncology, Gachon University Gil Medical Center, Incheon, Korea
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26
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Park SY, Yoon S, Sun EG, Zhou R, Bae JA, Seo YW, Chae JI, Paik MJ, Ha HH, Kim H, Kim KK. Glycoprotein 90K Promotes E-Cadherin Degradation in a Cell Density-Dependent Manner via Dissociation of E-Cadherin-p120-Catenin Complex. Int J Mol Sci 2017; 18:ijms18122601. [PMID: 29207493 PMCID: PMC5751204 DOI: 10.3390/ijms18122601] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 11/23/2017] [Accepted: 11/28/2017] [Indexed: 12/20/2022] Open
Abstract
Glycoprotein 90K (also known as LGALS3BP or Mac-2BP) is a tumor-associated protein, and high 90K levels are associated with poor prognosis in some cancers. To clarify the role of 90K as an indicator for poor prognosis and metastasis in epithelial cancers, the present study investigated the effect of 90K on an adherens junctional protein, E-cadherin, which is frequently absent or downregulated in human epithelial cancers. Treatment of certain cancer cells with 90K significantly reduced E-cadherin levels in a cell-population-dependent manner, and these cells showed decreases in cell adhesion and increases in invasive cell motility. Mechanistically, 90K-induced E-cadherin downregulation occurred via ubiquitination-mediated proteasomal degradation. 90K interacted with the E-cadherin–p120-catenin complex and induced its dissociation, altering the phosphorylation status of p120-catenin, whereas it did not associate with β-catenin. In subconfluent cells, 90K decreased membrane-localized p120-catenin and the membrane fraction of the p120-catenin. Particularly, 90K-induced E-cadherin downregulation was diminished in p120-catenin knocked-down cells. Taken together, 90K upregulation promotes the dissociation of the E-cadherin–p120-catenin complex, leading to E-cadherin proteasomal degradation, and thereby destabilizing adherens junctions in less confluent tumor cells. Our results provide a potential mechanism to explain the poor prognosis of cancer patients with high serum 90K levels.
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Affiliation(s)
- So-Yeon Park
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Somy Yoon
- Medical Research Center for Gene Regulation, Brain Korea 21 Project, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
| | - Eun Gene Sun
- Medical Research Center for Gene Regulation, Brain Korea 21 Project, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
| | - Rui Zhou
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Jeong A Bae
- Medical Research Center for Gene Regulation, Brain Korea 21 Project, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
| | - Young-Woo Seo
- Korea Basic Science Institute, Gwangju Center, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea.
| | - Jung-Il Chae
- Department of Dental Pharmacology, School of Dentistry and Institute of Oral Bioscience, BK21 Plus, Chonbuk National University, 567 Baekje-daero, Jeonju, Jeonbuk 54896, Korea.
| | - Man-Jeong Paik
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Hyung-Ho Ha
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Korea.
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Brain Korea 21 Project, Chonnam National University Medical School, 160 Baekseo-ro, Dong-gu, Gwangju 61469, Korea.
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Hsueh PY, Cheung YK, Dey S, Kim KK, Martin-Sanchez FJ, Petersen SK, Wetter T. Added Value from Secondary Use of Person Generated Health Data in Consumer Health Informatics. Yearb Med Inform 2017; 26:160-171. [PMID: 28480472 DOI: 10.15265/iy-2017-009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Introduction: Various health-related data, subsequently called Person Generated Health Data (PGHD), is being collected by patients or presumably healthy individuals as well as about them as much as they become available as measurable properties in their work, home, and other environments. Despite that such data was originally just collected and used for dedicated predefined purposes, more recently it is regarded as untapped resources that call for secondary use. Method: Since the secondary use of PGHD is still at its early evolving stage, we have chosen, in this paper, to produce an outline of best practices, as opposed to a systematic review. To this end, we identified key directions of secondary use and invited protagonists of each of these directions to present their takes on the primary and secondary use of PGHD in their sub-fields. We then put secondary use in a wider perspective of overarching themes such as privacy, interpretability, interoperability, utility, and ethics. Results: We present the primary and secondary use of PGHD in four focus areas: (1) making sense of PGHD in augmented Shared Care Plans for care coordination across multiple conditions; (2) making sense of PGHD from patient-held sensors to inform cancer care; (3) fitting situational use of PGHD to evaluate personal informatics tools in adaptive concurrent trials; (4) making sense of environment risk exposure data in an integrated context with clinical and omics-data for biomedical research. Discussion: Fast technological progress in all the four focus areas calls for a societal debate and decision-making process on a multitude of challenges: how emerging or foreseeable results transform privacy; how new data modalities can be interpreted in light of clinical data and vice versa; how the sheer mass and partially abstract mathematical properties of the achieved insights can be interpreted to a broad public and can consequently facilitate the development of patient-centered services; and how the remaining risks and uncertainties can be evaluated against new benefits. This paper is an initial summary of the status quo of the challenges and proposals that address these issues. The opportunities and barriers identified can serve as action items individuals can bring to their organizations when facing challenges to add value from the secondary use of patient-generated health data.
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Zhou R, Yang Y, Park SY, Nguyen TT, Seo YW, Lee KH, Lee JH, Kim KK, Hur JS, Kim H. The lichen secondary metabolite atranorin suppresses lung cancer cell motility and tumorigenesis. Sci Rep 2017; 7:8136. [PMID: 28811522 PMCID: PMC5557893 DOI: 10.1038/s41598-017-08225-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 07/10/2017] [Indexed: 02/06/2023] Open
Abstract
Lichens are symbiotic organisms that produce various secondary metabolites. Here, different lichen extracts were examined to identify secondary metabolites with anti-migratory activity against human lung cancer cells. Everniastrum vexans had the most potent inhibitory activity, and atranorin was identified as an active subcomponent of this extract. Atranorin suppressed β-catenin-mediated TOPFLASH activity by inhibiting the nuclear import of β-catenin and downregulating β-catenin/LEF and c-jun/AP-1 downstream target genes such as CD44, cyclin-D1 and c-myc. Atranorin decreased KAI1 C-terminal interacting tetraspanin (KITENIN)-mediated AP-1 activity and the activity of the KITENIN 3′-untranslated region. The nuclear distribution of the AP-1 transcriptional factor, including c-jun and c-fos, was suppressed in atranorin-treated cells, and atranorin inhibited the activity of Rho GTPases including Rac1, Cdc42, and RhoA, whereas it had no effect on epithelial-mesenchymal transition markers. STAT-luciferase activity and nuclear STAT levels were decreased, whereas total STAT levels were moderately reduced. The human cell motility and lung cancer RT² Profiler PCR Arrays identified additional atranorin target genes. Atranorin significantly inhibited tumorigenesis in vitro and in vivo. Taken together, our results indicated that E. vexans and its subcomponent atranorin may inhibit lung cancer cell motility and tumorigenesis by affecting AP-1, Wnt, and STAT signaling and suppressing RhoGTPase activity.
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Affiliation(s)
- Rui Zhou
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Yi Yang
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.,Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
| | - So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Thanh Thi Nguyen
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea.,Faculty of Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot, Vietnam
| | - Young-Woo Seo
- Korea Basic Science Institute, Gwangju Center, Gwangju, Republic of Korea
| | - Kyung Hwa Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jae Hyuk Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea.
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Kim JE, Kim KK, Kim SY, Lee J, Park SH, Park JO, Park YS, Lim HY, Kang WK, Kim ST. MAP2K1 Mutation in Colorectal Cancer Patients: Therapeutic Challenge Using Patient-Derived Tumor Cell Lines. J Cancer 2017; 8:2263-2268. [PMID: 28819429 PMCID: PMC5560144 DOI: 10.7150/jca.19582] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/18/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND: The MAP2K1 K57T mutation is known to be a potential mechanism of primary and secondary resistance to EGFR inhibitors in metastatic colorectal cancer (CRC) and has also been reported to promote resistance to BRAF and MEK inhibitors. It is important to overcome therapeutic resistance to EGFR inhibitors to improve the treatment outcomes of metastatic CRC. METHODS: We established patient-derived tumor cells (PDCs) from metastatic lesions that newly appeared during treatment with a BRAF inhibitor (LGX-818) plus an EGFR inhibitor (cetuximab) in a patient with BRAF-mutant CRC. To investigate therapeutic options to overcome acquired resistance due to MAP2K1 mutation in BRAF-mutant CRC, we performed cell viability assays using the PDCs. RESULTS: We tested whether the PDCs were resistant to an EGFR inhibitor (cetuximab) and a BRAF inhibitor (sorafenib) as these cells were established at the time of resistance to the EGFR plus BRAF inhibitors. Moreover, the anti-tumor effect of AZD6244 (MEK inhibitor) was evaluated because PDCs harbored a MAP2K1 mutation at the time of resistance to the EGFR plus BRAF inhibitors. MTT proliferation assays showed that monotherapy with cetuximab, sorafenib, or AZD6244 did not suppress cell viability. We next tested viability of the PDCs to combination treatment with cetuximab plus AZD6244 and sorafenib plus AZD6244. Proliferation of PDCs was significantly inhibited by sorafenib and AZD6244, but not by cetuximab plus AZD6244. Investigation of the combined effect of sorafenib and AZD6244 using the calculated combination index (CI) showed synergistic effects of sorafenib and AZD6244 in combination therapy applied to PDCs with the MAP2K1 K57T mutation. CONCLUSION: Our results suggest that combination treatment with BRAF and MEK inhibitors might be a novel treatment strategy for MAP2K1 K57T-mutant CRC. This finding will be helpful to guide treatment of patients with CRC that is resistant to EGFR inhibitors.
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Affiliation(s)
- J E Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K K Kim
- Department of Molecular Cell Biology, Institute of Basic Science, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon 440-746, Korea
| | - S Y Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J Lee
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Y S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H Y Lim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - W K Kang
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S T Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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30
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Bae JA, Sun EG, Ko YS, Choi HJ, Jung C, Lee KH, Chung IJ, Moon KS, Yu YH, Ha HH, Kim H, Kim KK. Abstract 3530: KITENIN works as a fine regulator of ErbB4 expression in colorectal cancer tissues in addition to E3-ubiquitin ligase Nrdp1. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-3530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: Understanding the complex biological functions of E3-ubiquitin ligases may facilitate the modulation of E3-ubiquitin ligases as a promising approach for the development of novel anticancer drugs. We recently identified that the KITENIN/ErbB4-Dvl2-c-Jun axis works as a novel unconventional downstream signal of epidermal growth factor in colorectal cancer (CRC) tissues and that the immunohistochemical expression of KITENIN/ErbB4 was highly expressed in tumor tissues from advanced CRC stage. However, the detailed mechanisms that explain the higher levels of ErbB4 in colon cancer tissues are largely unknown. Here we investigated whether E3-ubiquitin ligases participate in the operation of the KITENIN/ErbB4-Dvl2-c-Jun axis and in the maintenance of elevated KITENIN/ErbB4 complex in CRC.
Results & Discussion: We found that Nrdp1, an E3-ligase for ErbB3/ErbB4, interacted with KITENIN (KAI1 C-terminal interacting tetraspanin) to form a functional KITENIN/ErbB4/Nrdp1 complex and is responsible for down-regulating Dvl2 within this complex. Interestingly, ErbB4 was resistant to degradation by Nrdp1 in KITENIN/Nrdp1-co-transfected CRC cells, and KITENIN bound to the C-terminal coiled-coil domain of Nrdp1. Chemical blockade of ErbB kinase did not block the action of EGF to increase in total/phospho-ErbB4 and phospho-ERK in KITENIN/ErbB4-cotransfected cells, whereas it blocked the action of EGF in ErbB4 alone-transfected CRC cells. In human CRC tissues, higher expressions of ErbB4 and KITENIN and lower expression of Dvl2 was observed in stage IV samples than in stage I, but a low level of Nrdp1 was expressed in both stages and it did not differ significantly by stage. These results indicated that Nrdp1 is necessary for the reduction in Dvl2 to generate c-Jun in the EGF-KITENIN/ErbB4-c-Jun axis, but more importantly, elevated KITENIN protects KITENIN-bound ErbB4 from Nrdp1-mediated degradation via physical collaboration between the KITENIN/ErbB4 complex and Nrdp1, but not via modulation of ErbB kinase activity. Thus, KITENIN functions in the maintenance of a higher expression level of ErbB4 in advanced CRC tissues, independent of ubiquitin-mediated degradation via Nrdp1.
Conclusion: Our present findings add a new component to our understanding of the molecular events underlying the regulation of ErbB4 expression level in CRC tissues: KITENIN is also a fine regulator of ErbB4 expression in addition to E3-ubiquitin ligase Nrdp1.
Citation Format: Jeong A Bae, Eun Gene Sun, Yoo-Seung Ko, Hui Jeong Choi, Chaeyong Jung, Kyung-Hwa Lee, Ik Joo Chung, Kyung-Sub Moon, Young Hyun Yu, Hyung-Ho Ha, Hangun Kim, Kyung Keun Kim. KITENIN works as a fine regulator of ErbB4 expression in colorectal cancer tissues in addition to E3-ubiquitin ligase Nrdp1 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 3530. doi:10.1158/1538-7445.AM2017-3530
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Affiliation(s)
- Jeong A Bae
- 1Chonnam Natl. Univ. Medical School, Medical Research Center for Gene Regulation, Kwangju, Republic of Korea
| | - Eun Gene Sun
- 1Chonnam Natl. Univ. Medical School, Medical Research Center for Gene Regulation, Kwangju, Republic of Korea
| | - Yoo-Seung Ko
- 1Chonnam Natl. Univ. Medical School, Medical Research Center for Gene Regulation, Kwangju, Republic of Korea
| | - Hui Jeong Choi
- 1Chonnam Natl. Univ. Medical School, Medical Research Center for Gene Regulation, Kwangju, Republic of Korea
| | - Chaeyong Jung
- 1Chonnam Natl. Univ. Medical School, Medical Research Center for Gene Regulation, Kwangju, Republic of Korea
| | - Kyung-Hwa Lee
- 2Chonnam Natl. Univ. Medical School, Dept of Pathology, Kwangju, Republic of Korea
| | - Ik Joo Chung
- 3Chonnam Natl. Univ. Medical School, Dept of Hematology-Oncology, Kwangju, Republic of Korea
| | - Kyung-Sub Moon
- 4Chonnam Natl. Univ. Medical School, Dept of Neurosurgery, Kwangju, Republic of Korea
| | - Young Hyun Yu
- 5Sunchon National University, College of Pharmacy, Sunchon, Republic of Korea
| | - Hyung-Ho Ha
- 5Sunchon National University, College of Pharmacy, Sunchon, Republic of Korea
| | - Hangun Kim
- 5Sunchon National University, College of Pharmacy, Sunchon, Republic of Korea
| | - Kyung Keun Kim
- 1Chonnam Natl. Univ. Medical School, Medical Research Center for Gene Regulation, Kwangju, Republic of Korea
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To PK, Cho YS, Kwon SY, Kang TW, Kim KK, Jung C. Abstract 1589: Zinc inhibits androgen receptor expression to inhibit prostate cancer cell growth. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-1589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Prostate gland contains high level of intracellular zinc which is dramatically diminished during cancer development. Due to the obscure role of zinc in this process, therapeutic application using zinc and its supplement is very limited. This study aims to clarify the role(s) of zinc and its intervening mechanism.
Material and methods: Treated by zinc chloride (15-150 µM), several prostate cancer cell lines were applied to confocal microscopy for intracellular trafficking of exogenous zinc, in vitro proliferation assays for their growth, prostate specific antigen (PSA)-based reporter-mediated transactivation, and Western blot for detection of androgen receptor (AR), PSA and ubiquitination. Further in vivo studies were performed to demonstrate the effect of zinc (10-20 mg/kg) on xenograft cancer growth using syngeneic animals followed by tumor analyses.
Results: Zinc chloride suppressed androgen-dependent proliferation of human prostate cancer cells and accordingly zinc chloride dramatically inhibited androgen-mediated transactivation and several androgen target protein expressions, including PSA and p21. Further investigation showed that addition of zinc chloride strikingly downregulated AR protein levels after 4 hours up to 24 hours in both human LNCaP and murine TRAMP C2 prostate cancer cell lines. AR downregulation resulted from facilitated protein degradation instead of transcriptional control. Further in vivo study was carried out using syngeneic mice bearing C2 subcutaneous tumors. Peritoneal injection of zinc chloride significantly reduced tumor size. Analysis of these tumors revealed that there were reduced expression of AR and increased cell death.
Conclusions: Zinc has been shown to inhibit incumbent oncogenic NF-κB pathway. These results also suggest that intracellular zinc inhibits cell growth via downregulation of AR to inhibit growth of prostate cancer. Considering that AR functions as a major effector in prostate cancer development and progression into castration resistant prostate cancer, loss of zinc may be a critical step for this devastating disease and further studies can be performed to develop zinc-based cancer therapeutics.
Citation Format: Phuong Kim To, Young-Suk Cho, Se-Young Kwon, Taek Won Kang, Kyung Keun Kim, Chaeyong Jung. Zinc inhibits androgen receptor expression to inhibit prostate cancer cell growth [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 1589. doi:10.1158/1538-7445.AM2017-1589
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Affiliation(s)
- Phuong Kim To
- Chonnam National Univ. Med. School, Hwasun-gun, Republic of Korea
| | - Young-Suk Cho
- Chonnam National Univ. Med. School, Hwasun-gun, Republic of Korea
| | - Se-Young Kwon
- Chonnam National Univ. Med. School, Hwasun-gun, Republic of Korea
| | - Taek Won Kang
- Chonnam National Univ. Med. School, Hwasun-gun, Republic of Korea
| | - Kyung Keun Kim
- Chonnam National Univ. Med. School, Hwasun-gun, Republic of Korea
| | - Chaeyong Jung
- Chonnam National Univ. Med. School, Hwasun-gun, Republic of Korea
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Yang Y, Yu YH, Ha HH, Lee KH, Moon KS, Kim KK, Kim H. Abstract 4209: Inhibitory activity of lichen secondary metabolite, physciosporin, against lung cancer cell motility. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-4209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Lichens produce various unique chemicals that can be used for pharmaceutical purposes. To screen for novel lichen secondary metabolites showing inhibitory activity against lung cancer cell motility, we tested acetone extracts of 13 lichen samples collected in Chile. Physciosporin, isolated from Pseudocyphellaria coriacea (Hook f. & Taylor) D.J. Galloway & P. James, was identified as an effective compound and showed significant inhibitory activity in migration and invasion assays against human lung cancer cells. Physciosporin treatment reduced both protein and mRNA levels of N-cadherin with concomitant decreases in the levels of epithelial-mesenchymal transition markers such as snail and twist. Physciosporin also suppressed KITENIN (KAI1 C-terminal interacting tetraspanin)-mediated AP-1 activity in both the absence and presence of epidermal growth factor stimulation. Quantitative real-time PCR analysis showed that the expression of the metastasis suppressor gene, KAI1, was increased while that of the metastasis enhancer gene, KITENIN, was dramatically decreased by physciosporin. Particularly, the activity of 3'-untranslated region of KITENIN was decreased by physciosporin. Moreover, Cdc42 and Rac1 activities were decreased by physciosporin. These results demonstrated that the lichen secondary metabolite, physciosporin, inhibits lung cancer cell motility through novel mechanisms of action.
Citation Format: Yi Yang, Young Hyun Yu, Hyung-Ho Ha, Kyung-Hwa Lee, Kyung-Sub Moon, Kyung Keun Kim, Hangun Kim. Inhibitory activity of lichen secondary metabolite, physciosporin, against lung cancer cell motility [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 4209. doi:10.1158/1538-7445.AM2017-4209
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Affiliation(s)
- Yi Yang
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | | | - Hyung-Ho Ha
- 1Sunchon National Univ., Sunchon, Republic of Korea
| | - Kyung-Hwa Lee
- 2Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kyung-Sub Moon
- 2Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kyung Keun Kim
- 2Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hangun Kim
- 1Sunchon National Univ., Sunchon, Republic of Korea
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Bray GA, Kim KK, Wilding JPH. Obesity: a chronic relapsing progressive disease process. A position statement of the World Obesity Federation. Obes Rev 2017; 18:715-723. [PMID: 28489290 DOI: 10.1111/obr.12551] [Citation(s) in RCA: 671] [Impact Index Per Article: 95.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 03/20/2017] [Indexed: 02/06/2023]
Abstract
This paper considers the argument for obesity as a chronic relapsing disease process. Obesity is viewed from an epidemiological model, with an agent affecting the host and producing disease. Food is the primary agent, particularly foods that are high in energy density such as fat, or in sugar-sweetened beverages. An abundance of food, low physical activity and several other environmental factors interact with the genetic susceptibility of the host to produce positive energy balance. The majority of this excess energy is stored as fat in enlarged, and often more numerous fat cells, but some lipid may infiltrate other organs such as the liver (ectopic fat). The enlarged fat cells and ectopic fat produce and secrete a variety of metabolic, hormonal and inflammatory products that produce damage in organs such as the arteries, heart, liver, muscle and pancreas. The magnitude of the obesity and its adverse effects in individuals may relate to the virulence or toxicity of the environment and its interaction with the host. Thus, obesity fits the epidemiological model of a disease process except that the toxic or pathological agent is food rather than a microbe. Reversing obesity will prevent most of its detrimental effects.
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Affiliation(s)
- G A Bray
- Pennington Biomedical Research Center of Louisiana State University, Baton Rouge, Louisiana, USA
| | - K K Kim
- National University of Korea, Seoul, Korea
| | - J P H Wilding
- Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, UK.,Clinical Sciences Centre, University Hospital Aintree, Liverpool, UK
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Choi S, Kim KK, Lee WS, Kang JM, Park YH. Living Donor Liver Transplantation in a Patient With Extensive Portomesenteric Venous Thrombosis: Case Report. Transplant Proc 2017; 48:3153-3155. [PMID: 27932170 DOI: 10.1016/j.transproceed.2016.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 03/01/2016] [Indexed: 10/20/2022]
Abstract
Extensive portomesenteric venous thrombus preventing restoration of adequate portal venous flow used to be considered a contraindication to liver transplantation. The subject was a 49-year-old male with hepatitis B cirrhosis and extensive thrombosis of portal, splenic, and superior mesenteric veins, and two large collateral vessels; one dilated and tortuous inferior to the pancreaticoduodenal vein and relevant to splanchnic venous return and the other a dilated coronary vein relevant to splenic venous return. During operation, the portal vein was anastomosed to these large collateral vessels using cryopreserved iliac vein. In conclusion, portal reconstruction with large collateral vessels in living-donor liver transplantation could be used selectively for patients with extensive portomesenteric venous thrombosis.
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Affiliation(s)
- S Choi
- Department of Surgery, Gil Medical Center, Gachon Medicine and Science, Guwol-dong, Namdong-gu, Incheon, Republic of Korea.
| | - K K Kim
- Department of Surgery, Gil Medical Center, Gachon Medicine and Science, Guwol-dong, Namdong-gu, Incheon, Republic of Korea
| | - W S Lee
- Department of Surgery, Gil Medical Center, Gachon Medicine and Science, Guwol-dong, Namdong-gu, Incheon, Republic of Korea
| | - J M Kang
- Department of Surgery, Gil Medical Center, Gachon Medicine and Science, Guwol-dong, Namdong-gu, Incheon, Republic of Korea
| | - Y H Park
- Department of Surgery, Gil Medical Center, Gachon Medicine and Science, Guwol-dong, Namdong-gu, Incheon, Republic of Korea
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35
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Sun EG, Lee KH, Ko YS, Choi HJ, Yang JI, Lee JH, Chung IJ, Paek YW, Kim H, Bae JA, Kim KK. KITENIN functions as a fine regulator of ErbB4 expression level in colorectal cancer via protection of ErbB4 from E3-ligase Nrdp1-mediated degradation. Mol Carcinog 2016; 56:1068-1081. [PMID: 27648936 DOI: 10.1002/mc.22572] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 09/07/2016] [Accepted: 09/16/2016] [Indexed: 12/16/2022]
Abstract
Understanding the complex biological functions of E3-ubiquitin ligases may facilitate the development of mechanism-based anti-cancer drugs. We recently identified that the KITENIN/ErbB4-Dvl2-c-Jun axis works as a novel unconventional downstream signal of epidermal growth factor (EGF) in colorectal cancer (CRC) tissues. Here we addressed whether E3-ubiquitin ligases are required for operation of this axis. We found that Nrdp1, an E3-ligase for ErbB3/ErbB4, interacted with KITENIN (KAI1 C-terminal interacting tetraspanin) to form a functional KITENIN/ErbB4/Nrdp1 complex and is responsible for down-regulating Dvl2 within this complex. Interestingly, ErbB4 was resistant to degradation by Nrdp1 in KITENIN/Nrdp1-co-transfected CRC cells, and KITENIN bound to the C-terminal coiled-coil domain of Nrdp1. Chemical blockade of ErbB kinase did not block the action of EGF to increase in total/phospho-ErbB4 and phospho-ERK in KITENIN/ErbB4-cotransfected cells, whereas it blocked the action of EGF in ErbB4 alone-transfected CRC cells. In human CRC tissues, higher expressions of ErbB4 and KITENIN and lower expression of Dvl2 was observed in stage IV samples than in stage I, but a low level of Nrdp1 was expressed in both stages and it did not differ significantly by stage. These results indicated that Nrdp1 is necessary for the reduction in Dvl2 to generate c-Jun in the EGF-KITENIN/ErbB4-c-Jun axis, but more importantly, elevated KITENIN protects KITENIN-bound ErbB4 from Nrdp1-mediated degradation via physical collaboration between the KITENIN/ErbB4 complex and Nrdp1, but not via modulation of ErbB kinase activity. Thus, KITENIN functions in the maintenance of a higher expression level of ErbB4 in advanced CRC tissues, independent of ubiquitin-mediated degradation via Nrdp1. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Eun Gene Sun
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, South Korea
| | - Kyung Hwa Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, South Korea
| | - Yoo-Seung Ko
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, South Korea
| | - Hui Jeong Choi
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, South Korea
| | - Jung-In Yang
- Department of Pathology, Chonnam National University Medical School, Gwangju, South Korea
| | - Jae Hyuk Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, South Korea
| | - Ik Joo Chung
- Department of Hematology-Oncology, Chonnam National University Medical School, Gwangju, South Korea
| | - Yun-Woong Paek
- Department of Physical Therapy, Gwangju Health University, Gwangju, South Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, Sunchon, South Korea
| | - Jeong A Bae
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, South Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, South Korea
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Park SY, Yoon S, Kim H, Kim KK. 90K Glycoprotein Promotes Degradation of Mutant β-Catenin Lacking the ISGylation or Phosphorylation Sites in the N-terminus. Neoplasia 2016; 18:618-625. [PMID: 27668402 PMCID: PMC5037265 DOI: 10.1016/j.neo.2016.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 01/28/2023] Open
Abstract
β-Catenin is a major transducer of the Wnt signaling pathway, which is aberrantly expressed in colorectal and other cancers. Previously, we showed that β-catenin is downregulated by the 90K glycoprotein via ISGylation-dependent degradation. However, the further mechanisms of β-catenin degradation by 90K-mediated ISGylation pathway were not investigated. This study aimed to identify the β-catenin domain responsible for the action of 90K and to compare the mechanism of 90K on β-catenin degradation with phosphorylation-dependent ubiquitinational degradation of β-catenin. The deletion mutants of β-catenin lacking N- or C-terminal domain or mutating the N-terminal lysine or nonlysine residue were employed to delineate the characteristics of β-catenin degradation by 90K-mediated ISGylation pathway. 90K induced Herc5 and ISG15 expression and reduced β-catenin levels in HeLa and CSC221 cells. The N-terminus of β-catenin is required for 90K-induced β-catenin degradation, but the N-terminus of β-catenin is not essential for interaction with Herc5. However, substituting lysine residues in the N-terminus of β-catenin with arginine or deleting serine or threonine residue containing domains from the N-terminus does not affect 90K-induced β-catenin degradation, indicating that the N-terminal 86 amino acids of β-catenin are crucial for 90K-mediated ISGylation/degradation of β-catenin in which the responsible lysine or nonlysine residues were not identified. Our present results highlight the action of 90K on promoting degradation of mutant β-catenin lacking the phosphorylation sites in the N-terminus. It provides further insights into the discrete pathway downregulating the stabilized β-catenin via acquiring mutations at the serine/threonine residues in the N-terminus.
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Affiliation(s)
- So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea
| | - Somy Yoon
- Medical Research Center for Gene Regulation, The Brain Korea 21 Project, Chonnam National University Medical School, Kwangju, South Korea
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, South Korea.
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, The Brain Korea 21 Project, Chonnam National University Medical School, Kwangju, South Korea.
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Lian S, Xia Y, Nguyen TT, Ung TT, Yoon HJ, Kim NH, Kim KK, Jung YD. Docosahexaenoic Acid Inhibits Tumor Promoter-Induced Urokinase-Type Plasminogen Activator Receptor by Suppressing PKCδ- and MAPKs-Mediated Pathways in ECV304 Human Endothelial Cells. PLoS One 2016; 11:e0163395. [PMID: 27654969 PMCID: PMC5031411 DOI: 10.1371/journal.pone.0163395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/06/2016] [Indexed: 11/18/2022] Open
Abstract
The overexpression of urokinase-type plasminogen activator receptor (uPAR) is associated with inflammation and virtually all human cancers. Despite the fact that docosahexaenoic acid (DHA) has been reported to possess anti-inflammatory and anti-tumor properties, the negative regulation of uPAR by DHA is still undefined. Here, we investigated the effect of DHA on 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced uPAR expression and the underlying molecular mechanisms in ECV304 human endothelial cells. DHA concentration-dependently inhibited TPA-induced uPAR. Specific inhibitors and mutagenesis studies showed that PKCδ, JNK1/2, Erk1/2, NF-κB, and AP-1 were critical for TPA-induced uPAR expression. Application of DHA suppressed TPA-induced translocation of PKCδ, activation of the JNK1/2 and Erk1/2 signaling pathways, and subsequent AP-1 and NF-κB transactivation. In conclusion, these observations suggest a novel role for DHA in reducing uPAR expression and cell invasion by inhibition of PKCδ, JNK1/2, and Erk1/2, and the reduction of AP-1 and NF-κB activation in ECV304 human endothelial cells.
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Affiliation(s)
- Sen Lian
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Yong Xia
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Thi Thinh Nguyen
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Trong Thuan Ung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Hyun Joong Yoon
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Nam Ho Kim
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Kyung Keun Kim
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Young Do Jung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
- * E-mail:
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Lee SI, Bae JA, Ko YS, Lee KI, Kim H, Kim KK. Geijigajakyak decoction inhibits the motility and tumorigenesis of colorectal cancer cells. Altern Ther Health Med 2016; 16:288. [PMID: 27527352 PMCID: PMC4986256 DOI: 10.1186/s12906-016-1281-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 08/11/2016] [Indexed: 12/29/2022]
Abstract
Background Recent studies report that inflammatory diseases of the large intestine are associated with colorectal cancer. Geijigajakyak Decoction (GJD) has antispasmodic and anti-inflammatory effects on the gastrointestinal tract. Thus, in light of the connection between chronic bowel inflammation and colorectal cancer (CRC), we asked whether GJD inhibits colorectal tumorigenesis. Methods The effects of GJD on the viability and proliferation of CRC cells were evaluated using MTT and BrdU assays, respectively. The motility of CRC cells was examined by a Transwell migration/invasion assay and immunoblot analysis was used to examine the signaling pathways associated with migration. A syngeneic Balb/c mice allograft model, in which CT26 cells were injected into the dorsum, was used to evaluate the anti-tumor effects of GJD in vivo. Results GJD had no cytotoxic effects against HCT116 CRC cells, although it did inhibit their proliferation. GJD inhibited the migration of HCT116 cells, and suppressed the invasion of HCT116, Caco2, and CSC221 CRC cells. In addition, GJD downregulated the expression of p-JNK and p-p38 MAPK, which are downstream signaling molecules associated with invasiveness. Furthermore, oral administration of GJD (333 mg/kg, twice a day) inhibited tumor growth in a mouse xenograft model. Conclusions GJD inhibited the motility of human CRC cells and suppressed tumorigenesis in a mouse model. These results suggest that GJD warrants further study as a potential adjuvant anti-cancer therapy. Electronic supplementary material The online version of this article (doi:10.1186/s12906-016-1281-z) contains supplementary material, which is available to authorized users.
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Lian S, Xia Y, Ung TT, Khoi PN, Yoon HJ, Lee SG, Kim KK, Jung YD. Prostaglandin E 2 stimulates urokinase-type plasminogen activator receptor via EP2 receptor-dependent signaling pathways in human AGS gastric cancer cells. Mol Carcinog 2016; 56:664-680. [PMID: 27377703 DOI: 10.1002/mc.22524] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 06/27/2016] [Accepted: 07/01/2016] [Indexed: 12/29/2022]
Abstract
Aberrant expression of urokinase-type plasminogen activator receptor (uPAR) has been observed in human gastric cancers. Prostaglandin E2 (PGE2 ), whose biosynthesis is catalyzed by cyclooxygenase-2 (COX-2), is implicated in cancer metastasis; however, the cellular and molecular mechanisms of PGE2 -driven uPAR expression are yet to be elucidated in human gastric cancer AGS cells. In this study, we showed that PGE2 induces uPAR expression in concentration- and time-dependent manners. Furthermore, using antagonists and siRNA, we found that among the four subtypes of PGE2 receptors, EP2 receptors are involved in PGE2 -induced uPAR expression. PGE2 induced the activation of Src, epidermal growth factor receptor (EGFR), c-Jun NH2 -terminal kinase (JNK), extracellular signal-regulated kinase (Erk), and p38 mitogen activated protein kinase (p38 MAPK). Specific inhibitor and mutagenesis studies showed that Src, EGFR, JNK1/2, and Erk1/2 are involved in PGE2 -induced uPAR expression. PGE2 induces EP2-dependent phosphorylation of Src, while the activation of Src-dependent EGFR leads to the phosphorylation of JNK1/2 and Erk1/2. Deletion and site-directed mutagenesis studies demonstrated the involvement of transcription factor activator protein (AP)-1 and nuclear factor-kappa B (NF-κB) in PGE2 -induced uPAR expression. EGFR-dependent MAPKs (JNK1/2 and Erk1/2) function as the upstream signaling molecules in the activation of AP-1 and NF-κB, respectively. AGS cells pre-treated with PGE2 showed remarkably enhanced invasiveness, which was partially abrogated by uPAR-neutralizing antibodies. To the best of our knowledge, this is the first report that PGE2 -induced uPAR expression, which stimulates invasiveness of human gastric cancer AGS cells, is mediated by the EP2 receptor-dependent Src/EGFR/JNK1/2, Erk1/2/AP-1, and Src/EGFR/JNK1/2, Erk1/2/NF-κB cascades. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Sen Lian
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Yong Xia
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Trong Thuan Ung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Pham Ngoc Khoi
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hyun Joong Yoon
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sam Gyu Lee
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kyung Keun Kim
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Young Do Jung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Republic of Korea
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Bae WK, Shim HJ, Cho SH, Chung IJ, Kim KK. Abstract 4477: Loss of EZH2 accelerates STAT5 loss mediated fatty liver and cancer development through non-methyltransferase function. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-4477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The molecular mechanisms underlying the development of fatty liver and hepatocellular carcinoma are not fully understood. Loss of STAT5 from liver tissue results in hepatosteatosis and hepatocellular carcinoma (HCC). Enhancer of zeste homolog 2 (EZH2) mediates epigenetic silencing of gene expression and is frequently up-regulated in human HCC. STAT5 recruits EZH2, which represses a substantial subset of genes regulated by STAT5 during B lymphopoiesis. However, it is not clear if EZH2 can affect STAT5-target genes in liver.
Methods: To investigate the role of STAT5 and EZH2 in liver, mice were generated that carried EZH2fl/fl alleles, STAT5fl/fl alleles, EZH2fl/flSTAT5fl/fl alleles and an Alb-Cre transgene. Lipid analysis in serum and liver, and RNA-seq were examined at 3 & 8 months of age. Mice were also examined by chronic 3 months injection by carbon tetrachloride (CCl4).
Results: The deletion of STAT5 in hepatocyte caused fatty liver and increased cholesterol in serum and liver. The deletion of EZH2 did not make a difference in H3K27me3 expression, and lipid in serum and liver. However, combined loss of EZH2 and STAT5 caused severe fatty liver, increase triglyceride and the ratio liver/body weight compare to STAT5 KO mice (the ratio; 0.097 vs. 0.058, p < 0.05). In response to 3 months treatment with CCl4, combined loss of EZH2 and STAT5 showed accelerated development of hepatocellular carcinoma at 12 months of age. Transcriptome analysis identified the expression of several genes was significantly increased (cd36, pparγ, cyp4a14, lipoprotein lipase, fasn) and decreased (nox4, bbc3, bcl2l1, cdkn2b) which were well known as STAT5 target genes in combined loss of EZH2 and STAT5.
Conclusions: This work demonstrates that loss of EZH2 in liver affects the expression of STAT5 target genes and accelerates STAT5 loss mediated fatty liver and hepatocellular carcinoma development through non-methyltransferase function.
Citation Format: Woo Kyun Bae, Hyun Jeong Shim, Sang Hee Cho, Ik-Joo Chung, Kyung Keun Kim. Loss of EZH2 accelerates STAT5 loss mediated fatty liver and cancer development through non-methyltransferase function. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 4477.
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Affiliation(s)
- Woo Kyun Bae
- Chonnam National Univ. Hwasun Hospital, Hwasun-Gun, Republic of Korea
| | - Hyun Jeong Shim
- Chonnam National Univ. Hwasun Hospital, Hwasun-Gun, Republic of Korea
| | - Sang Hee Cho
- Chonnam National Univ. Hwasun Hospital, Hwasun-Gun, Republic of Korea
| | - Ik-Joo Chung
- Chonnam National Univ. Hwasun Hospital, Hwasun-Gun, Republic of Korea
| | - Kyung Keun Kim
- Chonnam National Univ. Hwasun Hospital, Hwasun-Gun, Republic of Korea
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Vataev SI, Zaitsev AV, Kim KK, Lukomskaya NY, Magazanik LG. [CHANGES IN BRAIN ELECTRICAL ACTIVITY PATTERNS IN RATS WITH DIFFERENT SUSCEPTIBILITY TO SEIZURES IN LITHIUM-PILOCARPINE MODEL OF STATUS EPILEPTICUS]. Ross Fiziol Zh Im I M Sechenova 2016; 102:633-646. [PMID: 30192488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The intracranial EEG was continuously registered in Krushinskii-Molodkina rats with inherited susceptibility to audiogenic seizures and in Wistar rats, which are resistant to the audiogenic convulsions in the lithium-pilocarpine model of status epilepticus (SE). The recordings were done from somatosensory, auditory and visual cortical areas, caudate nucleus, hippocampus and dorso-medial nucleus of thalamus. We found that SE was induced in Krushinskii-Molodkina rats by intramuscular injections of pilocarpine at a minimum dose of 15 mg/kg, while in Wistar rats with a dose of 25 mg/kg. We describe six successive EEG patterns during SE. We identified behavioral convulsive manifestations associated with each phase of the SE. Rats of both strains had the same sequence and the main properties of EEG patterns, except the latency of phase 1 (Krushinskii-Molodkina rats 13 + 3 min vs. Wistar rats 23 + 2 min). In conclusion, the rats with susceptibility to audiogenic seizures have increased sensitivity to the pilocarpine, but the development and time-course of SE in rats of both strains did not differ.
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Ribeiro JR, Schorl C, Yano N, Romano N, Kim KK, Singh RK, Moore RG. HE4 promotes collateral resistance to cisplatin and paclitaxel in ovarian cancer cells. J Ovarian Res 2016; 9:28. [PMID: 27184254 PMCID: PMC4869286 DOI: 10.1186/s13048-016-0240-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 05/05/2016] [Indexed: 01/09/2023] Open
Abstract
Background Chemotherapy resistance presents a difficult challenge in treating epithelial ovarian cancer patients, particularly when tumors exhibit resistance to multiple chemotherapeutic agents. A few studies have shown that elevated serum levels of the ovarian cancer biomarker HE4 correlate with tumor chemoresistance, response to treatment, and survival. Here, we sought to confirm our previous results that HE4 contributes to collateral resistance to cisplatin and paclitaxel in vitro and uncover factors that may contribute to HE4-mediated chemoresistance. Methods MTS assays and western blots for cleaved PARP were used to assess resistance of HE4-overexpressing SKOV3 and OVCAR8 clones to cisplatin and paclitaxel. CRISPR/Cas technology was used to knockdown HE4 in HE4-overexpressing SKOV3 cells. A microarray was conducted to determine differential gene expression between SKOV3 null vector-transfected and HE4-overexpressing clones upon cisplatin exposure, and results were validated by quantitative RT-PCR. Regulation of mitogen activated protein kinases (MAPKs) and tubulins were assessed by western blot. Results HE4-overexpressing SKOV3 and OVCAR8 clones displayed increased resistance to cisplatin and paclitaxel. Knockdown of HE4 in HE4-overexpressing SKOV3 cells partially reversed chemoresistance. Microarray analysis revealed that HE4 overexpression resulted in suppression of cisplatin-mediated upregulation of EGR1, a MAPK-regulated gene involved in promoting apoptosis. Upregulation of p38, a MAPK activated in response to cisplatin, was suppressed in HE4-overexpressing clones. No differences in extracellular signal-regulated kinase (ERK) activation were noted in HE4-overexpressing clones treated with 25 μM cisplatin, but ERK activation was partially suppressed in HE4-overexpressing clones treated with 80 μM cisplatin. Furthermore, treatment of cells with recombinant HE4 dramatically affected ERK activation in SKOV3 and OVCAR8 wild type cells. Recombinant HE4 also upregulated α-tubulin and β-tubulin levels in SKOV3 and OVCAR8 cells, and microtubule associated protein tau (MAPT) gene expression was increased in SKOV3 HE4-overexpressing clones. Conclusions Overexpression of HE4 promotes collateral resistance to cisplatin and paclitaxel, and downregulation of HE4 partially reverses this chemoresistance. Multiple factors could be involved in HE4-mediated chemoresistance, including deregulation of MAPK signaling, as well as alterations in tubulin levels or stability. Electronic supplementary material The online version of this article (doi:10.1186/s13048-016-0240-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- J R Ribeiro
- Women and Infants Hospital, Department of Obstetrics and Gynecology, Program in Women's Oncology, Molecular Therapeutics Laboratory, 200 Chestnut Street, Providence, RI, 02903, USA.
| | - C Schorl
- Center for Genomics and Proteomics, Genomics Core Facility, Brown University, 70 Ship Street, Providence, RI, 02903, USA
| | - N Yano
- Women and Infants Hospital, Department of Obstetrics and Gynecology, Program in Women's Oncology, Molecular Therapeutics Laboratory, 200 Chestnut Street, Providence, RI, 02903, USA
| | - N Romano
- Women and Infants Hospital, Department of Obstetrics and Gynecology, Program in Women's Oncology, Molecular Therapeutics Laboratory, 200 Chestnut Street, Providence, RI, 02903, USA
| | - K K Kim
- Wilmot Cancer Institute, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, NY, USA
| | - R K Singh
- Women and Infants Hospital, Department of Obstetrics and Gynecology, Program in Women's Oncology, Molecular Therapeutics Laboratory, 200 Chestnut Street, Providence, RI, 02903, USA.,Wilmot Cancer Institute, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, NY, USA
| | - R G Moore
- Women and Infants Hospital, Department of Obstetrics and Gynecology, Program in Women's Oncology, Molecular Therapeutics Laboratory, 200 Chestnut Street, Providence, RI, 02903, USA.,Wilmot Cancer Institute, Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, NY, USA
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Keum S, Park J, Kim A, Park J, Kim KK, Jeong J, Shin HS. Variability in empathic fear response among 11 inbred strains of mice. Genes Brain Behav 2016; 15:231-42. [PMID: 26690560 DOI: 10.1111/gbb.12278] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 11/24/2015] [Accepted: 11/29/2015] [Indexed: 12/21/2022]
Abstract
Empathy is an important emotional process that involves the ability to recognize and share emotions with others. We have previously developed an observational fear learning (OFL) behavioral assay to measure empathic fear in mice. In the OFL task, a mouse is conditioned for context-dependent fear when it observes a conspecific demonstrator receiving aversive stimuli. In the present study, by comparing 11 different inbred mouse strains that are commonly used in the laboratory, we found that empathic fear response was highly variable between different strains. Five strains--C57BL/6J, C57BL/6NTac, 129S1/SvImJ, 129S4/SvJae and BTBR T(+) Itpr3(tf) /J--showed observational fear (OF) responses, whereas AKR/J, BALB/cByJ, C3H/HeJ, DBA/2J, FVB/NJ and NOD/ShiLtJ mice exhibited low empathic fear response. Importantly, day 2 OF memory was significantly correlated with contextual memory in the classical fear conditioning among the 11 strains. Innate differences in anxiety, locomotor activity, sociability and preference for social novelty were not significantly correlated with OFL. Interestingly, early adolescent C57BL/6J mice exhibited an increase in acquisition of OF. The level of OFL in C57BL/6J strain was not affected by sex or strains of the demonstrator. Taken together, these data strongly suggest that there are naturally occurring OFL-specific genetic variations modulating empathic fear behaviors in mice. The identification of causal genes may uncover novel genetic pathways and underlying neural mechanisms that modulate empathic fear and, ultimately, provide new targets for therapeutic intervention in human mental disorders associated with impaired empathy.
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Affiliation(s)
- S Keum
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - J Park
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea.,Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - A Kim
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - J Park
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - K K Kim
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - J Jeong
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - H-S Shin
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
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Yang Y, Nguyen TT, Jeong MH, Crişan F, Yu YH, Ha HH, Choi KH, Jeong HG, Jeong TC, Lee KY, Kim KK, Hur JS, Kim H. Inhibitory Activity of (+)-Usnic Acid against Non-Small Cell Lung Cancer Cell Motility. PLoS One 2016; 11:e0146575. [PMID: 26751081 PMCID: PMC4708991 DOI: 10.1371/journal.pone.0146575] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 12/18/2015] [Indexed: 11/19/2022] Open
Abstract
Lichens are symbiotic organisms that produce various unique chemicals that can be used for pharmaceutical purposes. With the aim of screening new anti-cancer agents that inhibit cancer cell motility, we tested the inhibitory activity of seven lichen species collected from the Romanian Carpathian Mountains against migration and invasion of human lung cancer cells and further investigated the molecular mechanisms underlying their anti-metastatic activity. Among them, Alectoria samentosa, Flavocetraria nivalis, Alectoria ochroleuca, and Usnea florida showed significant inhibitory activity against motility of human lung cancer cells. HPLC results showed that usnic acid is the main compound in these lichens, and (+)-usnic acid showed similar inhibitory activity that crude extract have. Mechanistically, β-catenin-mediated TOPFLASH activity and KITENIN-mediated AP-1 activity were decreased by (+)-usnic acid treatment in a dose-dependent manner. The quantitative real-time PCR data showed that (+)-usnic acid decreased the mRNA level of CD44, Cyclin D1 and c-myc, which are the downstream target genes of both β-catenin/LEF and c-jun/AP-1. Also, Rac1 and RhoA activities were decreased by treatment with (+)-usnic acid. Interestingly, higher inhibitory activity for cell invasion was observed when cells were treated with (+)-usnic acid and cetuximab. These results implied that (+)-usnic acid might have potential activity in inhibition of cancer cell metastasis, and (+)-usnic acid could be used for anti-cancer therapy with a distinct mechanisms of action.
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Affiliation(s)
- Yi Yang
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
| | - Thanh Thi Nguyen
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
- Faculty of Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot, Vietnam
| | - Min-Hye Jeong
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
| | - Florin Crişan
- Department of Taxonomy and Ecology, Faculty of Biology and Geology, Babeș-Bolyai University, Cluj-Napoca, Romania
| | - Young Hyun Yu
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Hyung-Ho Ha
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Kyung Hee Choi
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | | | - Kwang Youl Lee
- College of Pharmacy, Chonnam National University, Gwangju, Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon, Republic of Korea
- * E-mail: (HK); (JSH)
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon, Republic of Korea
- * E-mail: (HK); (JSH)
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Kim JH, Kim K, Kim I, Seong S, Nam KI, Lee SH, Kim KK, Kim N. Role of CrkII Signaling in RANKL-Induced Osteoclast Differentiation and Function. J Immunol 2015; 196:1123-31. [PMID: 26695370 DOI: 10.4049/jimmunol.1501998] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 11/22/2015] [Indexed: 11/19/2022]
Abstract
Rac1, a member of small GTPases, is a key regulator of osteoclast differentiation and function. The Crk family adaptor proteins, consisting of Src homology (SH) 2 and SH3 protein-binding domains, regulate cell proliferation, migration, and invasion through Rac1 activation. In this study, we examined the role of CrkII in osteoclast differentiation and function. Retroviral overexpression of CrkII in osteoclast precursors enhanced osteoclast differentiation and resorptive function through Rac1 activation. The knockdown of CrkII in osteoclast precursors using small interfering RNA inhibited osteoclast differentiation and its resorption activity. Unlike wild-type CrkII, overexpression of the three SH domains in mutant forms of CrkII did not enhance either osteoclast differentiation or function. Phosphorylation of p130 Crk-associated substrate (p130Cas) by osteoclastogenic cytokines in preosteoclasts increased the interaction between p130Cas and CrkII, which is known to be involved in Rac1 activation. Furthermore, transgenic mice overexpressing CrkII under control of a tartrate-resistant acid phosphatase promoter exhibited a low bone mass phenotype, associated with increased resorptive function of osteoclasts in vivo. Taken together, our data suggest that the p130Cas/CrkII/Rac1 signaling pathway plays an important role in osteoclast differentiation and function, both in vitro and in vivo.
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Affiliation(s)
- Jung Ha Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea
| | - Kabsun Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea
| | - Inyoung Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea
| | - Semun Seong
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea
| | - Kwang-Il Nam
- Department of Anatomy, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea; and
| | - Seoung Hoon Lee
- Department of Oral Microbiology and Immunology, Wonkwang University School of Dentistry, Iksan 570-749, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea
| | - Nacksung Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea;
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Lian S, Xia Y, Khoi PN, Ung TT, Yoon HJ, Kim NH, Kim KK, Jung YD. Cadmium induces matrix metalloproteinase-9 expression via ROS-dependent EGFR, NF-кB, and AP-1 pathways in human endothelial cells. Toxicology 2015; 338:104-16. [PMID: 26514923 DOI: 10.1016/j.tox.2015.10.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/17/2015] [Accepted: 10/19/2015] [Indexed: 11/29/2022]
Abstract
Cadmium (Cd), a widespread cumulative pollutant, is a known human carcinogen, associated with inflammation and tumors. Matrix metalloproteinase-9 (MMP-9) plays a pivotal role in tumor metastasis; however, the mechanisms underlying the MMP-9 expression induced by Cd remain obscure in human endothelial cells. Here, Cd elevated MMP-9 expression in dose- and time-dependent manners in human endothelial cells. Cd increased ROS production and the ROS-producing NADPH oxidase. Cd translocates p47(phox), a key subunit of NADPH oxidase, to the cell membrane. Cd also activated the phosphorylation of EGFR, Akt, Erk1/2, and JNK1/2 in addition to promoting NF-кB and AP-1 binding activities. Specific inhibitor and mutagenesis studies showed that EGFR, Akt, Erk1/2, JNK1/2 and transcription factors NF-κB and AP-1 were related to Cd-induced MMP-9 expression in endothelial cells. Akt, Erk1/2, and JNK1/2 functioned as upstream signals in the activation of NF-κB and AP-1, respectively. In addition, N-acetyl-l-cystein (NAC), diphenyleneiodonium chloride (DPI) and apocynin (APO) inhibited the Cd-induced activation of EGFR, Akt, Erk1/2, JNK1/2, and p38 MAPK, indicating that ROS production by NADPH oxidase is the furthest upstream signal in MMP-9 expression. At present, it states that Cd displayed marked invasiveness in ECV304 cells, which was partially abrogated by MMP-9 neutralizing antibodies. These results demonstrated that Cd induces MMP-9 expression via ROS-dependent EGFR->Erk1/2, JNK1/2->AP-1 and EGFR->Akt->NF-κB signaling pathways and, in turn, stimulates invasiveness in human endothelial cells.
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Affiliation(s)
- Sen Lian
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Yong Xia
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Pham Ngoc Khoi
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Trong Thuan Ung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Hyun Joong Yoon
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Nam Ho Kim
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Kyung Keun Kim
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea
| | - Young Do Jung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea.
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Bae JA, Kho DH, Sun EG, Ko YS, Yoon S, Lee KH, Ahn KY, Lee JH, Joo YE, Chung IJ, Lee SH, Kim H, Kim KK. Elevated Coexpression of KITENIN and the ErbB4 CYT-2 Isoform Promotes the Transition from Colon Adenoma to Carcinoma Following APC loss. Clin Cancer Res 2015; 22:1284-94. [PMID: 26527747 DOI: 10.1158/1078-0432.ccr-15-0306] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 10/16/2015] [Indexed: 11/16/2022]
Abstract
PURPOSE AND EXPERIMENTAL DESIGN The molecular events in the malignant progression of colon adenoma after loss of adenomatous polyposis coli (APC) are not fully understood. KITENIN (KAI1 C-terminal interacting tetraspanin) increases the invasiveness of colorectal cancer cells, and we identified a novel EGFR-independent oncogenic signal of EGF that works under coexpressed KITENIN and ErbB4. Here we tested whether elevated KITENIN and ErbB4 contribute to further progression of intestinal adenoma following APC loss. RESULTS The intestinal tissues of villin-KITENIN transgenic mice in which villin-driven KITENIN expression induces increased c-Jun expression exhibit mild epithelial cell proliferation but no epithelial lineage changes compared with those of nontransgenic mice. Among the four ErbB4 isoforms, JM-a/CYT-2 and JM-b/CYT-2 exhibited the highest AP-1 activity when cells coexpressing KITENIN and each isoform were stimulated by EGF. Interestingly, predominant overexpression of the ErB4-CYT-2 mRNA as well as increased EGFR expression were observed in intestinal adenoma of APC(min/+) mice, which makes the microenvironment of activated EGF signaling. When we crossed villin-KITENIN mice with APC(min/+) mice, intestinal tumor tissues in the crossed mice showed the characteristics of early-stage invading adenocarcinoma. In patients with colorectal cancer, ErbB4-CYT-2 mRNA expression was significantly greater in tumor tissues than in normal adjacent tissues, but no significant differences in tumor tissue expression were found between different colorectal cancer stages. Furthermore, the mRNA expression of KITENIN and that of ErbB4-CYT-2 were positively correlated in human colorectal cancer tissue. CONCLUSIONS Elevated coexpression of KITENIN and ErbB4-CYT-2 promotes the transition of colon adenoma to adenocarcinoma within an APC loss-associated tumor microenvironment.
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Affiliation(s)
- Jeong A Bae
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Kwangju, Korea
| | - Dhong Hyo Kho
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Kwangju, Korea
| | - Eun Gene Sun
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Kwangju, Korea
| | - Yoo-Seung Ko
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Kwangju, Korea
| | - Somy Yoon
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Kwangju, Korea
| | - Kyung Hwa Lee
- Department of Pathology, Chonnam National University Medical School, Kwangju, Korea
| | - Kyu Youn Ahn
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Kwangju, Korea
| | - Jae Hyuk Lee
- Department of Pathology, Chonnam National University Medical School, Kwangju, Korea
| | - Young Eun Joo
- Department of Gastroenterology-Hepatology, Chonnam National University Medical School, Kwangju, Korea
| | - Ik Joo Chung
- Department of Hematology-Oncology, Chonnam National University Medical School, Kwangju, Korea
| | - Sug Hyung Lee
- Department of Pathology, The Catholic University of Korea, Seoul, Korea
| | - Hangun Kim
- College of Pharmacy, Sunchon National University, Sunchon, Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Kwangju, Korea.
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Yang Y, Park SY, Nguyen TT, Yu YH, Nguyen TV, Sun EG, Udeni J, Jeong MH, Pereira I, Moon C, Ha HH, Kim KK, Hur JS, Kim H. Lichen Secondary Metabolite, Physciosporin, Inhibits Lung Cancer Cell Motility. PLoS One 2015; 10:e0137889. [PMID: 26371759 PMCID: PMC4570789 DOI: 10.1371/journal.pone.0137889] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 08/24/2015] [Indexed: 01/28/2023] Open
Abstract
Lichens produce various unique chemicals that can be used for pharmaceutical purposes. To screen for novel lichen secondary metabolites showing inhibitory activity against lung cancer cell motility, we tested acetone extracts of 13 lichen samples collected in Chile. Physciosporin, isolated from Pseudocyphellaria coriacea (Hook f. & Taylor) D.J. Galloway & P. James, was identified as an effective compound and showed significant inhibitory activity in migration and invasion assays against human lung cancer cells. Physciosporin treatment reduced both protein and mRNA levels of N-cadherin with concomitant decreases in the levels of epithelial-mesenchymal transition markers such as snail and twist. Physciosporin also suppressed KITENIN (KAI1 C-terminal interacting tetraspanin)-mediated AP-1 activity in both the absence and presence of epidermal growth factor stimulation. Quantitative real-time PCR analysis showed that the expression of the metastasis suppressor gene, KAI1, was increased while that of the metastasis enhancer gene, KITENIN, was dramatically decreased by physciosporin. Particularly, the activity of 3’-untranslated region of KITENIN was decreased by physciosporin. Moreover, Cdc42 and Rac1 activities were decreased by physciosporin. These results demonstrated that the lichen secondary metabolite, physciosporin, inhibits lung cancer cell motility through novel mechanisms of action.
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Affiliation(s)
- Yi Yang
- Korean Lichen Research Institute, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - So-Yeon Park
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - Thanh Thi Nguyen
- Korean Lichen Research Institute, Sunchon National University, Sunchon 540–950, Republic of Korea
- Faculty of Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot, Vietnam
| | - Young Hyun Yu
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - Tru Van Nguyen
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - Eun Gene Sun
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 500–872, Republic of Korea
| | - Jayalal Udeni
- Korean Lichen Research Institute, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - Min-Hye Jeong
- Korean Lichen Research Institute, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - Iris Pereira
- Institute of Biological Sciences, Universidad de Talca, Talca 747–721, Chile
| | - Cheol Moon
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - Hyung-Ho Ha
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon 540–950, Republic of Korea
| | - Kyung Keun Kim
- Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju 500–872, Republic of Korea
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, Sunchon 540–950, Republic of Korea
- * E-mail: (HK); (J-SH)
| | - Hangun Kim
- College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Sunchon 540–950, Republic of Korea
- * E-mail: (HK); (J-SH)
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Lee J, Youn BU, Kim K, Kim JH, Lee DH, Seong S, Kim I, Han SH, Che X, Choi JY, Park YW, Kook H, Kim KK, Lim DS, Kim N. Mst2 Controls Bone Homeostasis by Regulating Osteoclast and Osteoblast Differentiation. J Bone Miner Res 2015; 30:1597-607. [PMID: 25761670 DOI: 10.1002/jbmr.2503] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 02/24/2015] [Accepted: 03/05/2015] [Indexed: 01/29/2023]
Abstract
Mammalian sterile 20-like kinase 2 (Mst2) plays a central role in the Hippo pathway, controlling cell proliferation, differentiation, and apoptosis during development. However, the roles of Mst2 in osteoclast and osteoblast development are largely unknown. Here, we demonstrate that mice deficient in Mst2 exhibit osteoporotic phenotypes with increased numbers of osteoclasts and decreased numbers of osteoblasts as shown by micro-computed tomography (µCT) and histomorphometric analyses. Osteoclast precursors lacking Mst2 exhibit increased osteoclastogenesis and Nfatc1, Acp5, and Oscar expression in response to receptor activator of NF-κB ligand (RANKL) exposure. Conversely, Mst2 overexpression in osteoclast precursors leads to the inhibition of RANKL-induced osteoclast differentiation. Osteoblast precursors deficient in Mst2 exhibit attenuated osteoblast differentiation and function by downregulating the expression of Runx2, Alpl, Ibsp, and Bglap. Conversely, ectopic expression of Mst2 in osteoblast precursors increases osteoblastogenesis. Finally, we demonstrate that the NF-κB pathway is activated by Mst2 deficiency during osteoclast and osteoblast development. Our findings suggest that Mst2 is involved in bone homeostasis, functioning as a reciprocal regulator of osteoclast and osteoblast differentiation through the NF-κB pathway.
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Affiliation(s)
- Jongwon Lee
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Bang Ung Youn
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kabsun Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jung Ha Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Da-Hye Lee
- Department of Biological Sciences, National Creative Research Initiatives Center, Graduate School of Nanoscience and Technology (WCU), Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Semun Seong
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Inyoung Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Seung-Hee Han
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Xiangguo Che
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Je-Yong Choi
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Yong-Wook Park
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, Republic of Korea
| | - Hyun Kook
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Kyung Keun Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Dae-Sik Lim
- Department of Biological Sciences, National Creative Research Initiatives Center, Graduate School of Nanoscience and Technology (WCU), Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Nacksung Kim
- Department of Pharmacology, Medical Research Center for Gene Regulation, Chonnam National University Medical School, Gwangju, Republic of Korea
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Lee HB, He Y, Yang GS, Oh JA, Ha JS, Song OH, Lee DJ, Jung SC, Kim KK, Kim K, Kim H. Determination of C-Terminal δ-Catenin Responsible for Inducing Dendritic Morphogenesis. J Nanosci Nanotechnol 2015; 15:5589-5592. [PMID: 26369122 DOI: 10.1166/jnn.2015.10460] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
δ-Catenin induces dendritic morphogenesis in several cells and it was reported that deletion of C-terminal 207 amino acid of δ-catenin completely abolished the dendritic morphogenesis. However, exact domain responsible for inducing dendritic morphogenesis in C-terminus of δ-catenin was not mapped. Here, we report that expression of ΔC47 (lacking 47 amino acid of C-terminus: 1-1200), ΔC77 (lacking 77 amino acid of C-terminus: 1-1170) deletion mutants of δ-catenin induced the dendritic morphogenesis of HEK293T and NIH3T3 cells as full-length δ-catenin did. In agreement with previous report, ΔC207 deletion mutant did not show the dendritic morphogenesis of the cells. Interestingly, introducing 107 amino acid deletion of C-terminus (ΔC107 mutant: 1-1140) and 177 amino acid deletion of C-terminus (ΔC177 mutant: 1-1070) showed limited primary and secondary dendritic process and notable spine-like process formation. These results suggest that 1140-1170 amino acid of C-terminal δ-catenin is required for primary and secondary dendrite-like process formation.
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