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Cho S, Kim W, Yoo D, Han Y, Hwang H, Kim S, Kim J, Park S, Park Y, Jo H, Pyun JC, Lee M. Impact of glucose metabolism on PD-L1 expression in sorafenib-resistant hepatocellular carcinoma cells. Sci Rep 2024; 14:1751. [PMID: 38243049 PMCID: PMC10798953 DOI: 10.1038/s41598-024-52160-x] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/15/2024] [Indexed: 01/21/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is the fifth leading cause of cancer-related mortality worldwide. Programmed cell death ligand-1 (PD-L1) is an immune checkpoint protein that binds to programmed cell death-1 (PD-1), which is expressed in activated T cells and other immune cells and has been employed in cancer therapy, including HCC. Recently, PD-L1 overexpression has been documented in treatment-resistant cancer cells. Sorafenib is a multikinase inhibitor and the only FDA-approved treatment for advanced HCC. However, several patients exhibit resistance to sorafenib during treatment. This study aimed to assess the effect of glucose deprivation on PD-L1 expression in HCC cells. We used PD-L1-overexpressing HepG2 cells and IFN-γ-treated SK-Hep1 cells to explore the impact of glycolysis on PD-L1 expression. To validate the correlation between PD-L1 expression and glycolysis, we analyzed data from The Cancer Genome Atlas (TCGA) and used immunostaining for HCC tissue analysis. Furthermore, to modulate PD-L1 expression, we treated HepG2, SK-Hep1, and sorafenib-resistant SK-Hep1R cells with rapamycin. Here, we found that glucose deprivation reduced PD-L1 expression in HCC cells. Additionally, TCGA data and immunostaining analyses confirmed a positive correlation between the expression of hexokinase II (HK2), which plays a key role in glucose metabolism, and PD-L1. Notably, rapamycin treatment decreased the expression of PD-L1 and HK2 in both high PD-L1-expressing HCC cells and sorafenib-resistant cells. Our results suggest that the modulation of PD-L1 expression by glucose deprivation may represent a strategy to overcome PD-L1 upregulation in patients with sorafenib-resistant HCC.
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Affiliation(s)
- Sua Cho
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Wonjin Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Dayoung Yoo
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Yeonju Han
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Hyemin Hwang
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Seunghwan Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jimin Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Sanghee Park
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Yusun Park
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - HanHee Jo
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
- Neurosciences Graduate Program, University of California, San Diego, La Jolla, CA, USA
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Misu Lee
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.
- Institute for New Drug Development, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.
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Lim C, Kim Y, Shim Y, Cho SH, Yang TJ, Song YH, Kang K, Paek NC. Rice OsGATA16 is a positive regulator for chlorophyll biosynthesis and chloroplast development. Plant J 2024; 117:599-615. [PMID: 37902786 DOI: 10.1111/tpj.16517] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 09/18/2023] [Accepted: 10/17/2023] [Indexed: 10/31/2023]
Abstract
Chloroplasts are essential organelles in plants that contain chlorophylls and facilitate photosynthesis for growth and development. As photosynthetic efficiency significantly impacts crop productivity, understanding the regulatory mechanisms of chloroplast development has been crucial in increasing grain and biomass production. This study demonstrates the involvement of OsGATA16, an ortholog of Arabidopsis GATA, NITRATE INDUCIBLE, CARBON-METABOLISM INVOLVED (GNC), and GNC-LIKE/CYTOKININ-RESPONSIVE GATA FACTOR 1 (GNL/CGA1), in chlorophyll biosynthesis and chloroplast development in rice (Oryza sativa). The osgata16-1 knockdown mutants produced pale-green leaves, while OsGATA16-overexpressed plants (OsGATA16-OE1) generated dark-green leaves, compared to their parental japonica rice. Reverse transcription and quantitative PCR analysis revealed downregulation of genes related to chloroplast division, chlorophyll biosynthesis, and photosynthesis in the leaves of osgata16-1 and upregulation in those of OsGATA16-OE1. Additionally, in vivo binding assays showed that OsGATA16 directly binds to the promoter regions of OsHEMA, OsCHLH, OsPORA, OsPORB, and OsFtsZ, and upregulates their expression. These findings indicate that OsGATA16 serves as a positive regulator controlling chlorophyll biosynthesis and chloroplast development in rice.
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Affiliation(s)
- Chaemyeong Lim
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Youngoh Kim
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Yejin Shim
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sung-Hwan Cho
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Tae-Jin Yang
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - Young Hun Song
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
| | - Kiyoon Kang
- Division of Life Sciences, Incheon National University, Incheon, Republic of Korea
| | - Nam-Chon Paek
- Department of Agriculture, Forestry and Bioresources, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
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Adot Veetil K, Husna A, Kabir MH, Jeong I, Choi O, Hossain I, Kim TH. Developing Mixed Matrix Membranes with Good CO 2 Separation Performance Based on PEG-Modified UiO-66 MOF and 6FDA-Durene Polyimide. Polymers (Basel) 2023; 15:4442. [PMID: 38006167 PMCID: PMC10674161 DOI: 10.3390/polym15224442] [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: 09/26/2023] [Revised: 11/04/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
The use of mixed matrix membranes (MMMs) comprising metal-organic frameworks (MOFs) for the separation of CO2 from flue gas has gained recognition as an effective strategy for enhancing gas separation efficiency. When incorporating porous materials like MOFs into a polymeric matrix to create MMMs, the combined characteristics of each constituent typically manifest. Nevertheless, the inadequate dispersion of an inorganic MOF filler within an organic polymer matrix can compromise the compatibility between the filler and matrix. In this context, the aspiration is to develop an MMM that not only exhibits optimal interfacial compatibility between the polymer and filler but also delivers superior gas separation performance, specifically in the efficient extraction of CO2 from flue gas. In this study, we introduce a modification technique involving the grafting of poly(ethylene glycol) diglycidyl ether (PEGDE) onto a UiO-66-NH2 MOF filler (referred to as PEG-MOF), aimed at enhancing its compatibility with the 6FDA-durene matrix. Moreover, the inherent CO2-philic nature of PEGDE is anticipated to enhance the selectivity of CO2 over N2 and CH4. The resultant MMM, incorporating 10 wt% of PEG-MOF loading, exhibits a CO2 permeability of 1671.00 Barrer and a CO2/CH4 selectivity of 22.40. Notably, these values surpass the upper bound reported by Robeson in 2008.
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Affiliation(s)
- Kavya Adot Veetil
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Asmaul Husna
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Md. Homayun Kabir
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Insu Jeong
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Ook Choi
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Iqubal Hossain
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Tae-Hyun Kim
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
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Hong S, Jeon M, Kwon J, Park H, Lee G, Kim K, Ahn S. Targeting RAF Isoforms and Tumor Microenvironments in RAS or BRAF Mutant Colorectal Cancers with SJ-C1044 for Anti-Tumor Activity. Curr Issues Mol Biol 2023; 45:5865-5878. [PMID: 37504287 PMCID: PMC10378394 DOI: 10.3390/cimb45070371] [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: 06/04/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 07/29/2023] Open
Abstract
Colorectal cancer (CRC) is a significant global health issue characterized by a high prevalence of KRAS gene mutations. The RAS/MAPK pathway, involving KRAS, plays a crucial role in CRC progression. Although some RAS inhibitors have been approved, their efficacy in CRC is limited. To overcome these limitations, pan-RAF inhibitors targeting A-Raf, B-Raf, and C-Raf have emerged as promising therapeutic strategies. However, resistance to RAF inhibition and the presence of an immunosuppressive tumor microenvironment (TME) pose additional obstacles to effective therapy. Here, we evaluated the potential of a novel pan-RAF inhibitor, SJ-C1044, for targeting mutant KRAS-mediated signaling and inhibiting CRC cell proliferation. Notably, SJ-C1044 also exhibited inhibitory effects on immunokinases, specifically, CSF1R, VEGFR2, and TIE2, which play crucial roles in immune suppression. SJ-C1044 demonstrated potent antitumor activity in xenograft models of CRC harboring KRAS or BRAF mutations. Importantly, treatment with SJ-C1044 resulted in increased infiltration of T cells and reduced presence of tumor-associated macrophages and regulatory T cells within the TME. Thus, SJ-C1044 shows immunomodulatory potential and the ability to enhance antitumor responses. The study underscores the therapeutic potential of SJ-C1044 as a novel pan-RAF inhibitor capable of targeting oncogenic signaling pathways and overcoming immune suppression in CRC.
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Affiliation(s)
- Sungpyo Hong
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea; (S.H.)
| | - Myeongjin Jeon
- Research Center, Samjin Pharm. Co., Ltd., Seoul 07794, Republic of Korea; (M.J.); (G.L.)
| | - Jeonghee Kwon
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea; (S.H.)
| | - Hanbyeol Park
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea; (S.H.)
| | - Goeun Lee
- Research Center, Samjin Pharm. Co., Ltd., Seoul 07794, Republic of Korea; (M.J.); (G.L.)
| | - Kilwon Kim
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea; (S.H.)
| | - Soonkil Ahn
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea; (S.H.)
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Yoon JY, Kim GW. Harnessing adaptive bistable stiffness of hair-cell-bundle structure for broadband vibration applications. Sci Rep 2023; 13:10750. [PMID: 37400522 DOI: 10.1038/s41598-023-37962-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 06/30/2023] [Indexed: 07/05/2023] Open
Abstract
This study presents an initial study on the adaptive bistable stiffness of the hair cell bundle structure in a frog cochlea, and aims to harness its bistable nonlinearity that features a negative stiffness region for broadband vibration applications such as vibration-based energy harvesters. To this end, the mathematical model for describing the bistable stiffness is first formulated based on the modeling concept of piecewise type nonlinearities. The harmonic balance method was then employed to examine the nonlinear responses of bistable oscillator, mimicking hair cells bundle structure under the frequency sweeping condition, and their dynamic behaviors induced by bistable stiffness characteristics are projected on phase diagrams, and Poincare maps concerning the bifurcation. In particular, the bifurcation mapping at the super- and sub-harmonic regimes provides a better perspective to examine the nonlinear motions which occur in the biomimetic system. The use of bistable stiffness characteristics of hair cell bundle structure in frog cochlea thus offers physical insights to harness the adaptive bistable stiffness for metamaterial-like potential engineering structures such as vibration-based energy harvester, and isolator etc.
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Affiliation(s)
- Jong-Yun Yoon
- Department of Mechatronics Engineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Gi-Woo Kim
- Department of Mechanical Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea.
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Hong SP, Kim KW, Ahn SK. Inhibition of GLI Transcriptional Activity and Prostate Cancer Cell Growth and Proliferation by DAX1. Curr Issues Mol Biol 2023; 45:5347-5361. [PMID: 37504255 PMCID: PMC10378570 DOI: 10.3390/cimb45070339] [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: 06/15/2023] [Accepted: 06/25/2023] [Indexed: 07/29/2023] Open
Abstract
The Hedgehog (Hh) signaling pathway plays an essential role in the initiation and progression of prostate cancer. This is mediated by transcriptional factors belonging to the GLI (glioma-associated oncogene) family, which regulate downstream targets to drive prostate cancer progression. The activity of GLI proteins is tightly controlled by a range of mechanisms, including molecular interactions and post-translational modifications. In particular, mitogenic and oncogenic signaling pathways have been shown to regulate GLI protein activity independently of upstream Hh pathway signaling. Identifying GLI protein regulators is critical for the development of targeted therapies that can improve patient outcomes. This study aimed to identify a novel protein that directly regulates the activity of GLI transcription factors in prostate cancer. We performed gene expression, cellular analyses, and reporter assays to demonstrate that DAX1 (dosage-sensitive sex reversal adrenal hypoplasia congenital critical region on X chromosome, gene 1) interacts with GLI1 and GLI2, the master regulators of Hh signaling. Interestingly, DAX1 overexpression significantly inhibited Hh signaling by reducing GLI1 and GLI2 activity, prostate cancer cell proliferation, and viability. Our results shed light on a novel regulatory mechanism of Hh signaling in prostate cancer cells. The interaction between DAX1 and GLI transcription factors provides insight into the complex regulation of Hh signaling in prostate cancer. Given the importance of Hh signaling in prostate cancer progression, targeting DAX1-GLI interactions may represent a promising therapeutic approach against prostate cancer. Overall, this study provides new insights into the regulation of the Hh pathway and its role in prostate cancer progression. The findings suggest that DAX1 could serve as a potential therapeutic target for the treatment of prostate cancer.
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Affiliation(s)
- Sung Pyo Hong
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Kil Won Kim
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Soon Kil Ahn
- Institute for New Drug Development, Division of Life Sciences, Incheon National University, Incheon 22012, Republic of Korea
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Han MR, Park AY, Seo BK, Bae MS, Kim JS, Son GS, Lee HY, Chang YW, Cho KR, Song SE, Woo OH, Ju HY, Oh H. Association between vascular ultrasound features and DNA sequencing in breast cancer: a preliminary study. Discov Oncol 2023; 14:52. [PMID: 37120792 PMCID: PMC10149538 DOI: 10.1007/s12672-023-00657-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/14/2023] [Indexed: 05/01/2023] Open
Abstract
There are few radiogenomic studies to correlate ultrasound features of breast cancer with genomic changes. We investigated whether vascular ultrasound phenotypes are associated with breast cancer gene profiles for predicting angiogenesis and prognosis. We prospectively correlated quantitative and qualitative features of microvascular ultrasound (vascular index, vessel morphology, distribution, and penetrating vessel) and contrast-enhanced ultrasound (time-intensity curve parameters and enhancement pattern) with genomic characteristics in 31 breast cancers. DNA obtained from breast tumors and normal tissues were analyzed using targeted next-generation sequencing of 105 genes. The single-variant association test was used to identify correlations between vascular ultrasound features and genomic profiles. Chi-square analysis was used to detect single nucleotide polymorphisms (SNPs) associated with ultrasound features by estimating p values and odds ratios (ORs). Eight ultrasound features were significantly associated with 9 SNPs (p < 0.05). Among them, four ultrasound features were positively associated with 5 SNPs: high vascular index with rs1136201 in ERBB2 (p = 0.04, OR = 7.75); large area under the curve on contrast-enhanced ultrasound with rs35597368 in PDGFRA (p = 0.04, OR = 4.07); high peak intensity with rs35597368 in PDGFRA (p = 0.049, OR = 4.05) and rs2305948 in KDR (p = 0.04, OR = 5.10); and long mean transit time with rs2275237 in ARNT (p = 0.02, OR = 10.25) and rs755793 in FGFR2 (p = 0.02, OR = 10.25). We identified 198 non-silent SNPs in 71 various cancer-related genes. Vascular ultrasound features can reflect genomic changes associated with angiogenesis and prognosis in breast cancer.
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Affiliation(s)
- Mi-Ryung Han
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Ah Young Park
- Department of Radiology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Bo Kyoung Seo
- Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, 123 Jeokgeum-ro, Danwon-gu, Ansan, Gyeonggi-do 15355 Republic of Korea
| | - Min Sun Bae
- Department of Radiology, Inha University Hospital and College of Medicine, Inhang-ro 27, Jung-gu, Incheon, 22332 Republic of Korea
| | - Jung Sun Kim
- Division of Hematology/Oncology, Department of Internal medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Gyeonggi-do Republic of Korea
| | - Gil Soo Son
- Division of Breast and Endocrine Surgery, Department of Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Gyeonggi-do Republic of Korea
| | - Hye Yoon Lee
- Division of Breast and Endocrine Surgery, Department of Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Gyeonggi-do Republic of Korea
| | - Young Woo Chang
- Division of Breast and Endocrine Surgery, Department of Surgery, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Gyeonggi-do Republic of Korea
| | - Kyu Ran Cho
- Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Sung Eun Song
- Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Ok Hee Woo
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Hye-Yeon Ju
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Hyunseung Oh
- Department of Pathology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Gyeonggi-do Republic of Korea
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Hwang CY, Cho ES, Yoon DJ, Seo MJ. Probiotic and antioxidant properties of C 30 carotenoid-producing Lactiplantibacillus plantarum isolated from kimchi. Food Sci Biotechnol 2023; 32:543-552. [PMID: 36911323 PMCID: PMC9992479 DOI: 10.1007/s10068-022-01226-5] [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: 08/24/2022] [Revised: 11/07/2022] [Accepted: 12/08/2022] [Indexed: 12/26/2022] Open
Abstract
This study focuses on the development of functional probiotics using caroteonid-producing lactic acid bacteria (LAB) with antioxidant properties. Thirty LAB strains were evaluated for their probiotic properties. Carotenoid biosynthesis gene cluster (crtMN operon) was detected using polymer chain reaction (PCR). The carotenoid identified as 4,4'-diaponeurosporene was analyzed via UV visible absorption spectra and HPLC. Five carotenoid-producing strains showed antioxidant activities. Lactiplantibacillus plantarum MGB0112, which showed the highest carotenoid production measuring at 470 nm of absorbance per ml of culture broth (0.014 A470nm/ml), showed low pH (56.5%) and bile salt (97.8%) tolerance with high adhesion properties (55.1% for toluene). Furthermore, this strain and 4,4'-diaponeurosporene extract exhibited antioxidant activity (99.5 and 40.1%, respectively) against DPPH free radicals in vitro. Their antioxidant properties were confirmed in vivo (45.6 and 55.2% survival rates in Caenorhabditis elegans). Therefore, C30 carotenoid-producing strain MGB0112 demonstrates outstanding antioxidant effects and can be a potential functional probiotics.
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Affiliation(s)
- Chi Young Hwang
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012 Republic of Korea
| | - Eui-Sang Cho
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012 Republic of Korea
| | - Deok Jun Yoon
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012 Republic of Korea
| | - Myung-Ji Seo
- Department of Bioengineering and Nano-Bioengineering, Graduate School of Incheon National University, Incheon, 22012 Republic of Korea
- Division of Bioengineering, Incheon National University, Incheon, 22012 Republic of Korea
- Research Center for Bio Materials & Process Development, Incheon National University, Incheon, 22012 Republic of Korea
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