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Jennings CM, Markel AC, Domingo MJE, Miller KS, Bayer CL, Parekh SH. Collagen organization and structure in FBLN5-/- mice using label-free microscopy: implications for pelvic organ prolapse. BIOMEDICAL OPTICS EXPRESS 2024; 15:2863-2875. [PMID: 38855688 PMCID: PMC11161343 DOI: 10.1364/boe.518976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/14/2024] [Accepted: 03/26/2024] [Indexed: 06/11/2024]
Abstract
Pelvic organ prolapse (POP) is a gynecological disorder described by the descent of superior pelvic organs into or out of the vagina as a consequence of disrupted muscles and tissue. A thorough understanding of the etiology of POP is limited by the availability of clinically relevant samples, restricting longitudinal POP studies on soft-tissue biomechanics and structure to POP-induced models such as fibulin-5 knockout (FBLN5-/- ) mice. Despite being a principal constituent in the extracellular matrix, little is known about structural perturbations to collagen networks in the FBLN5-/- mouse cervix. We identify significantly different collagen network populations in normal and prolapsed cervical cross-sections using two label-free, nonlinear microscopy techniques. Collagen in the prolapsed mouse cervix tends to be more isotropic, and displays reduced alignment persistence via 2-D Fourier transform analysis of images acquired using second harmonic generation microscopy. Furthermore, coherent Raman hyperspectral imaging revealed elevated disorder in the secondary structure of collagen in prolapsed tissues. Our results underscore the need for in situ multimodal monitoring of collagen organization to improve POP predictive capabilities.
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Affiliation(s)
- Christian M Jennings
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas, USA
| | - Andrew C Markel
- Department of Biomedical Engineering, Tulane University, New Orleans, Lousiana, USA
| | - Mari J E Domingo
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas, USA
| | - Kristin S Miller
- Department of Bioengineering, University of Texas at Dallas, Richardson, Texas, USA
- Department of Mechanical Engineering, University of Texas at Dallas, Richardson, Texas, USA
- Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Carolyn L Bayer
- Department of Biomedical Engineering, Tulane University, New Orleans, Lousiana, USA
| | - Sapun H Parekh
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas, USA
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Jennings CM, Markel AC, Domingo MJ, Miller KS, Bayer CL, Parekh SH. Collagen organization and structure in FLBN5-/- mice using label-free microscopy: implications for pelvic organ prolapse. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.31.578106. [PMID: 38352586 PMCID: PMC10862878 DOI: 10.1101/2024.01.31.578106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Pelvic organ prolapse (POP) is a gynecological disorder described by the descent of superior pelvic organs into or out of the vagina as a consequence of disrupted muscles and tissue. A thorough understanding of the etiology of POP is limited by the availability of clinically relevant samples, restricting longitudinal POP studies on soft-tissue biomechanics and structure to POP-induced models such as fibulin-5 knockout (FBLN5-/-) mice. Despite being a principal constituent in the extracellular matrix, little is known about structural perturbations to collagen networks in the FBLN5-/- mouse cervix. We identify significantly different collagen network populations in normal and prolapsed cervical cross-sections using two label-free, nonlinear microscopy techniques. Collagen in the prolapsed mouse cervix tends to be more isotropic, and displays reduced alignment persistence via 2-D Fourier Transform analysis of images acquired using second harmonic generation microscopy. Furthermore, coherent Raman hyperspectral imaging revealed elevated disorder in the secondary structure of collagen in prolapsed tissues. Our results underscore the need for in situ multimodal monitoring of collagen organization to improve POP predictive capabilities.
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Affiliation(s)
- Christian M. Jennings
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
| | - Andrew C. Markel
- Department of Biomedical Engineering, Tulane University, New Orleans, LA, USA
| | - Mari J.E. Domingo
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX, USA
| | - Kristin S. Miller
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX, USA
- Department of Mechanical Engineering, University of Texas at Dallas, Richardson, TX, USA
- Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Carolyn L. Bayer
- Department of Biomedical Engineering, Tulane University, New Orleans, LA, USA
| | - Sapun H. Parekh
- Department of Biomedical Engineering, University of Texas at Austin, Austin, TX, USA
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3
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Saifi MA, Ho IC. Citrullination of matrisomal proteins in health and diseases. Philos Trans R Soc Lond B Biol Sci 2023; 378:20220244. [PMID: 37778384 PMCID: PMC10542447 DOI: 10.1098/rstb.2022.0244] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 04/24/2023] [Indexed: 10/03/2023] Open
Abstract
Proteins once translated are subjected to post-translational modifications (PTMs) that can critically modify their characteristics. Citrullination is a unique type of PTM that is catalysed by peptidylarginine deiminase (PAD) enzymes, which regulate a multitude of physiological functions such as apoptosis, gene expression and immune response by altering the structure and function of cellular proteins. However, emerging data have unravelled compelling evidence to support that PAD-mediated citrullination is not exclusive to cellular proteins; rather citrullination of extracellular matrix (ECM) proteins also plays a major contributing role in various physiological/pathological conditions. Here, we discuss putative mechanisms for citrullination-induced alterations in the function of ECM proteins. Further, we put emphasis on influential roles of ECM citrullination in various pathological scenarios to underscore the clinical potential of its manipulation in human diseases. This article is part of the Theo Murphy meeting issue 'The virtues and vices of protein citrullination'.
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Affiliation(s)
- Mohammad Aslam Saifi
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital, 60 Fenwood Road, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
| | - I-Cheng Ho
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital, 60 Fenwood Road, Boston, MA 02115, USA
- Harvard Medical School, Boston, MA 02115, USA
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Bastrup JA, Jepps TA. Proteomic mapping reveals dysregulated angiogenesis in the cerebral arteries of rats with early-onset hypertension. J Biol Chem 2023; 299:105221. [PMID: 37660920 PMCID: PMC10558802 DOI: 10.1016/j.jbc.2023.105221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 08/07/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023] Open
Abstract
Hypertension is associated with the presence of vascular abnormalities, including remodeling and rarefaction. These processes play an important role in cerebrovascular disease development; however, the mechanistic changes leading to these diseases are not well characterized. Using data-independent acquisition-based mass spectrometry analysis, here we determined the protein changes in cerebral arteries in pre- and early-onset hypertension from the spontaneously hypertensive rat (SHR), a model that resembles essential hypertension in humans. Our analysis identified 125 proteins with expression levels that were significantly upregulated or downregulated in 12-week-old spontaneously hypertensive rats compared to normotensive Wistar Kyoto rats. Using an angiogenesis enrichment analysis, we further identified a critical imbalance in angiogenic proteins that promoted an anti-angiogenic profile in cerebral arteries at early onset of hypertension. In a comparison to previously published data, we demonstrate that this angiogenic imbalance is not present in mesenteric and renal arteries from age-matched SHRs. Finally, we identified two proteins (Fbln5 and Cdh13), whose expression levels were critically altered in cerebral arteries compared to the other arterial beds. The observation of an angiogenic imbalance in cerebral arteries from the SHR reveals critical protein changes in the cerebrovasculature at the early onset of hypertension and provides novel insights into the early pathology of cerebrovascular disease.
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Affiliation(s)
- Joakim A Bastrup
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Thomas A Jepps
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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5
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Kralj J, Pernar Kovač M, Dabelić S, Polančec DS, Wachtmeister T, Köhrer K, Brozovic A. Transcriptome analysis of newly established carboplatin-resistant ovarian cancer cell model reveals genes shared by drug resistance and drug-induced EMT. Br J Cancer 2023; 128:1344-1359. [PMID: 36717670 PMCID: PMC10050213 DOI: 10.1038/s41416-023-02140-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 12/20/2022] [Accepted: 01/04/2023] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND In ovarian cancer (OC) therapy, even initially responsive patients develop drug resistance. METHODS Here, we present an OC cell model composed of variants with differing degrees of acquired resistance to carboplatin (CBP), cross-resistance to paclitaxel, and CBP-induced metastatic properties (migration and invasion). Transcriptome data were analysed by two approaches identifying differentially expressed genes and CBP sensitivity-correlating genes. The impact of selected genes and signalling pathways on drug resistance and metastatic potential, along with their clinical relevance, was examined by in vitro and in silico approaches. RESULTS TMEM200A and PRKAR1B were recognised as potentially involved in both phenomena, also having high predictive and prognostic values for OC patients. CBP-resistant MES-OV CBP8 cells were more sensitive to PI3K/Akt/mTOR pathway inhibitors Rapamycin, Wortmannin, SB216763, and transcription inhibitor Triptolide compared with parental MES-OV cells. When combined with CBP, Rapamycin decreased the sensitivity of parental cells while Triptolide sensitised drug-resistant cells to CBP. Four PI3K/Akt/mTOR inhibitors reduced migration in both cell lines. CONCLUSIONS A newly established research model and two distinct transcriptome analysis approaches identified novel candidate genes enrolled in CBP resistance development and/or CBP-induced EMT and implied that one-gene targeting could be a better approach than signalling pathway inhibition for influencing both phenomena.
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Affiliation(s)
- Juran Kralj
- Division of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Margareta Pernar Kovač
- Division of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia
| | - Sanja Dabelić
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, Zagreb, Croatia
| | | | - Thorsten Wachtmeister
- Genomics and Transcriptomics Laboratory at the Biological and Medical Research Center (BMFZ), Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, Düsseldorf, Germany
| | - Karl Köhrer
- Genomics and Transcriptomics Laboratory at the Biological and Medical Research Center (BMFZ), Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, Düsseldorf, Germany
| | - Anamaria Brozovic
- Division of Molecular Biology, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb, Croatia.
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Brown Y, Hua S, Tanwar PS. Extracellular Matrix in High-Grade Serous Ovarian Cancer: Advances in Understanding of Carcinogenesis and Cancer Biology. Matrix Biol 2023; 118:16-46. [PMID: 36781087 DOI: 10.1016/j.matbio.2023.02.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 01/20/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
High-grade serous ovarian cancer (HGSOC) is notoriously known as the "silent killer" of post-menopausal women as it has an insidious progression and is the deadliest gynaecological cancer. Although a dual origin of HGSOC is now widely accepted, there is growing evidence that most cases of HGSOC originate from the fallopian tube epithelium. In this review, we will address the fallopian tube origin and involvement of the extracellular matrix (ECM) in HGSOC development. There is limited research on the role of ECM at the earliest stages of HGSOC carcinogenesis. Here we aim to synthesise current understanding on the contribution of ECM to each stage of HGSOC development and progression, beginning at serous tubal intraepithelial carcinoma (STIC) precursor lesions and proceeding across key events including dissemination of tumourigenic fallopian tube epithelial cells to the ovary, survival of these cells in peritoneal fluid as multicellular aggregates, and colonisation of the ovary. Likewise, as part of the metastatic series of events, serous ovarian cancer cells survive travel in peritoneal fluid, attach to, migrate across the mesothelium and invade into the sub-mesothelial matrix of secondary sites in the peritoneal cavity. Halting cancer at the pre-metastatic stage and finding ways to stop the dissemination of ovarian cancer cells from the primary site is critical for improving patient survival. The development of drug resistance also contributes to poor survival statistics in HGSOC. In this review, we provide an update on the involvement of the ECM in metastasis and drug resistance in HGSOC. Interplay between different cell-types, growth factor gradients as well as evolving ECM composition and organisation, creates microenvironment conditions that promote metastatic progression and drug resistance of ovarian cancer cells. By understanding ECM involvement in the carcinogenesis and chemoresistance of HGSOC, this may prompt ideas for further research for developing new early diagnostic tests and therapeutic strategies for HGSOC with the end goal of improving patient health outcomes.
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Affiliation(s)
- Yazmin Brown
- Global Centre for Gynaecological Diseases, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia.; Cancer Detection and Therapy Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia..
| | - Susan Hua
- Therapeutic Targeting Research Group, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia.; Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Pradeep S Tanwar
- Global Centre for Gynaecological Diseases, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia.; Cancer Detection and Therapy Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia..
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7
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Bian X, Yin S, Yin X, Fang T, Wang Y, Yang S, Jiang X, Xue Y, Ye F, Zhang L. Clinical and Biological Significances of FBLN5 in Gastric Cancer. Cancers (Basel) 2023; 15:cancers15020553. [PMID: 36672502 PMCID: PMC9856449 DOI: 10.3390/cancers15020553] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/07/2023] [Accepted: 01/15/2023] [Indexed: 01/18/2023] Open
Abstract
Abnormal FBLN5 expression levels are related to various cancer types. This study is the first to explore its clinical and biological significances in gastric cancer (GC). We used The Cancer Genome Atlas-GC (TCGA-GC) and Gene Expression Omnibus (GEO) databases to identify the differential expression of FBLN5, and its association with clinical pathological characteristics was analyzed. A Kaplan-Meier plotter was used to calculate the impact of FBLN5 on GC patient prognosis, and the biological functions of FBLN5 were analyzed. In addition, we constructed a GC tissue microarray, and performed an immunohistochemical staining of FBLN5 to verify our findings. Western blotting was conducted simultaneously to confirm that FBLN5 was overexpressed in GC. We found that the high level of FBLN5 mRNA in GC was associated with a poor prognosis. High FBLN5 expression levels were significantly correlated with INFc and N3 lymph node metastasis. Univariate and multivariate analyses showed that FBLN5 expression levels and lymph node metastasis rate were independent risk factors related to GC patient prognosis, which can be combined to construct a nomogram to serve patients. Therefore, we believe that FBLN5 is significantly related to the poor prognosis of GC patients. FBLN5 is a valuable prognostic indicator to evaluate the prognosis of GC.
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Affiliation(s)
- Xiulan Bian
- Department of Pathology, Basic Medical Science College, Harbin Medical University, Harbin 150086, China
| | - Shengjie Yin
- Department of Medical Oncology, Municipal Hospital of Chifeng, Chifeng 024000, China
| | - Xin Yin
- Department of Gastroenterological Surgery, Harbin Medical University Cancer Hospital, Harbin Medical University, Harbin 150086, China
| | - Tianyi Fang
- Department of Gastroenterological Surgery, Harbin Medical University Cancer Hospital, Harbin Medical University, Harbin 150086, China
| | - Yufei Wang
- Department of Gastroenterological Surgery, Harbin Medical University Cancer Hospital, Harbin Medical University, Harbin 150086, China
| | - Shuo Yang
- Department of Pathology, Basic Medical Science College, Harbin Medical University, Harbin 150086, China
| | - Xinju Jiang
- Department of Pathology, Basic Medical Science College, Harbin Medical University, Harbin 150086, China
| | - Yingwei Xue
- Department of Gastroenterological Surgery, Harbin Medical University Cancer Hospital, Harbin Medical University, Harbin 150086, China
| | - Fei Ye
- Department of Pathology, Basic Medical Science College, Harbin Medical University, Harbin 150086, China
- Correspondence: (F.Y.); (L.Z.)
| | - Lei Zhang
- Department of Pathology, Basic Medical Science College, Harbin Medical University, Harbin 150086, China
- Correspondence: (F.Y.); (L.Z.)
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8
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Jiang Y, Peng Z, Man Q, Wang S, Huang X, Meng L, Wang H, Zhu G. H3K27ac chromatin acetylation and gene expression analysis reveal sex- and situs-related differences in developing chicken gonads. Biol Sex Differ 2022; 13:6. [PMID: 35135592 PMCID: PMC8822763 DOI: 10.1186/s13293-022-00415-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 01/21/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Birds exhibit a unique asymmetry in terms of gonad development. The female left gonad generates a functional ovary, whereas the right gonad regresses. In males, both left and right gonads would develop into testes. How is this left/right asymmetry established only in females but not in males remains unknown. The epigenetic regulation of gonadal developmental genes may contribute to this sex disparity. The modification of histone tails such as H3K27ac is tightly coupled to chromatin activation and gene expression. To explore whether H3K27ac marked chromatin activation is involved in the asymmetric development of avian gonads, we probed genome-wide H3K27ac occupancy in left and right gonads from both sexes and related chromatin activity profile to the expression of gonadal genes. Furthermore, we validated the effect of chromatin activity on asymmetric gonadal development by manipulating the chromatin histone acetylation levels. METHODS The undifferentiated gonads from both sides of each sex were collected and subjected to RNA-Seq and H3K27ac ChIP-Seq experiments. Integrated analysis of gene expression and active chromatin regions were performed to identify the sex- and situs-specific regulation and expression of gonadal genes. The histone deacetylase inhibitor trichostatin A (TSA) was applied to the undifferentiated female right gonads to assess the effect of chromatin activation on gonadal gene expression and cell proliferation. RESULTS Even before sex differentiation, the gonads already show divergent gene expression between different sexes and between left/right sides in females. The sex-specific H3K27ac chromatin distributions coincide with the higher expression of male/female specification genes in each sex. Unexpectedly, the H3K27ac marked chromatin activation show a dramatic difference between left and right gonads in both sexes, although the left/right asymmetric gonadal development was observed only in females but not in males. In females, the side-specific H3K27ac occupancy instructs the differential expression of developmental genes between the pair of gonads and contributes to the development of left but not right gonad. However, in males, the left/right discrepancy of H3K27ac chromatin distribution does not drive the side-biased gene expression or gonad development. The TSA-induced retention of chromatin acetylation causes up-regulation of ovarian developmental genes and increases cell proliferation in the female right gonad. CONCLUSIONS We revealed that left/right asymmetry in H3K27ac marked chromatin activation exists in both sexes, but this discrepancy gives rise to asymmetric gonadal development only in females. Other mechanisms overriding the chromatin activation would control the symmetric development of male gonads in chicken.
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Affiliation(s)
- Yunqi Jiang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Shandong Agricultural University, Taian, China.,Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Zhelun Peng
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qiu Man
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Sheng Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xiaochen Huang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Lu Meng
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Heng Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Guiyu Zhu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Shandong Agricultural University, Taian, China. .,Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, College of Animal Sciences and Technology, Huazhong Agricultural University, Wuhan, China.
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9
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Renner C, Gomez C, Visetsouk MR, Taha I, Khan A, McGregor SM, Weisman P, Naba A, Masters KS, Kreeger PK. Multi-modal Profiling of the Extracellular Matrix of Human Fallopian Tubes and Serous Tubal Intraepithelial Carcinomas. J Histochem Cytochem 2022; 70:151-168. [PMID: 34866441 PMCID: PMC8777377 DOI: 10.1369/00221554211061359] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Recent evidence supports the fimbriae of the fallopian tube as one origin site for high-grade serous ovarian cancer (HGSOC). The progression of many solid tumors is accompanied by changes in the microenvironment, including alterations of the extracellular matrix (ECM). Therefore, we sought to determine the ECM composition of the benign fallopian tube and changes associated with serous tubal intraepithelial carcinomas (STICs), precursors of HGSOC. The ECM composition of benign human fallopian tube was first defined from a meta-analysis of published proteomic datasets that identified 190 ECM proteins. We then conducted de novo proteomics using ECM enrichment and identified 88 proteins, 7 of which were not identified in prior studies (COL2A1, COL4A5, COL16A1, elastin, LAMA5, annexin A2, and PAI1). To enable future in vitro studies, we investigated the levels and localization of ECM components included in tissue-engineered models (type I, III, and IV collagens, fibronectin, laminin, versican, perlecan, and hyaluronic acid) using multispectral immunohistochemical staining of fimbriae from patients with benign conditions or STICs. Quantification revealed an increase in stromal fibronectin and a decrease in epithelial versican in STICs. Our results provide an in-depth picture of the ECM in the benign fallopian tube and identified ECM changes that accompany STIC formation. (J Histochem Cytochem XX: XXX-XXX, XXXX).
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Affiliation(s)
| | | | | | | | | | | | | | - Alexandra Naba
- Alexandra Naba, Department of Physiology
and Biophysics, University of Illinois at Chicago, 835 S. Wolcott Avenue,
Chicago, IL 60612, USA. E-mail:
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10
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Brown KM, Xue A, Smith RC, Samra JS, Gill AJ, Hugh TJ. Cancer-associated stroma reveals prognostic biomarkers and novel insights into the tumour microenvironment of colorectal cancer and colorectal liver metastases. Cancer Med 2021; 11:492-506. [PMID: 34874125 PMCID: PMC8729056 DOI: 10.1002/cam4.4452] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/26/2021] [Accepted: 09/15/2021] [Indexed: 12/24/2022] Open
Abstract
Background and Aims Cancer‐associated stroma (CAS) is emerging as a key determinant of metastasis in colorectal cancer (CRC); however, little is known about CAS in colorectal liver metastases (CRLM). This study aimed to validate the prognostic significance of stromal protein biomarkers in primary CRC and CRLM. Secondly, this study aimed to describe the transcriptome of the CAS of CRLM and identify novel targetable pathways of metastasis. Methods A case–control study design from a prospectively maintained database was adopted. The prognostic value of epithelial and stromal CALD1, IGFBP7, POSTN, FAP, TGF‐β and pSMAD2 expression was assessed by immunohistochemistry (IHC) in multivariate models. Pathway enrichment and sparse partial least square‐discriminant analysis (sPLS‐DA) were performed on a nested cohort after isolating epithelial tumour and CAS by laser capture microdissection. Results 110 CRCs with 124 paired CRLMs, and 110 matched non‐metastatic control CRCs were included. Median follow‐up was 62 and 45 months for primary and CRLM groups, respectively. Stromal FAP and POSTN were independent predictors for the development of CRLM. After CRLM resection, stromal IGFBP7 and POSTN were predictors of poorer survival. sPLS‐DA on the nested cohort identified a number of novel targetable stromal genes and pathways that defined poor prognosis CRC and the CAS of CRLM. Conclusions This study is the first to describe key differences in stromal gene expression between paired primary CRC and CRLM as well as identifying several targetable biomarkers and transcriptomic pathways whose relevance specifically in the CAS of CRC and CRLM have not been previously described.
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Affiliation(s)
- Kai M Brown
- Cancer Surgery and Metabolism Research Group, Kolling Institute of Medical Research, Royal North Shore Hospital, St Leonards, New South Wales, Australia.,Upper GI Surgical Unit, Royal North Shore Hospital and North Shore Private Hospital, St Leonards, New South Wales, Australia.,Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Aiqun Xue
- Cancer Surgery and Metabolism Research Group, Kolling Institute of Medical Research, Royal North Shore Hospital, St Leonards, New South Wales, Australia.,Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Ross C Smith
- Cancer Surgery and Metabolism Research Group, Kolling Institute of Medical Research, Royal North Shore Hospital, St Leonards, New South Wales, Australia.,Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Jaswinder S Samra
- Upper GI Surgical Unit, Royal North Shore Hospital and North Shore Private Hospital, St Leonards, New South Wales, Australia.,Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Anthony J Gill
- Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Cancer Diagnosis and Pathology Group, University of Sydney, Kolling Institute of Medical Research, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Thomas J Hugh
- Cancer Surgery and Metabolism Research Group, Kolling Institute of Medical Research, Royal North Shore Hospital, St Leonards, New South Wales, Australia.,Upper GI Surgical Unit, Royal North Shore Hospital and North Shore Private Hospital, St Leonards, New South Wales, Australia.,Northern Clinical School, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
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11
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Sun B, Tomita B, Salinger A, Tilvawala RR, Li L, Hakami H, Liu T, Tsoyi K, Rosas IO, Reinhardt DP, Thompson PR, Ho IC. PAD2-mediated citrullination of Fibulin-5 promotes elastogenesis. Matrix Biol 2021; 102:70-84. [PMID: 34274450 DOI: 10.1016/j.matbio.2021.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/03/2021] [Accepted: 07/05/2021] [Indexed: 12/14/2022]
Abstract
The formation of elastic fibers is active only in the perinatal period. How elastogenesis is developmentally regulated is not fully understood. Citrullination is a unique form of post-translational modification catalyzed by peptidylarginine deiminases (PADs), including PAD1-4. Its physiological role is largely unknown. By using an unbiased proteomic approach of lung tissues, we discovered that FBLN5 and LTBP4, two key elastogenic proteins, were temporally modified in mouse and human lungs. We further demonstrated that PAD2 citrullinated FBLN5 preferentially in young lungs compared to adult lungs. Genetic ablation of PAD2 resulted in attenuated elastogenesis in vitro and age-dependent emphysema in vivo. Mechanistically, citrullination protected FBLN5 from proteolysis and subsequent inactivation of its elastogenic activity. Furthermore, citrullinated but not native FBLN5 partially rescued in vitro elastogenesis in the absence of PAD activity. Our data uncover a novel function of citrullination, namely promoting elastogenesis, and provide additional insights to how elastogenesis is regulated.
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Affiliation(s)
- Bo Sun
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital, 60 Fenwood Road, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Beverly Tomita
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital, 60 Fenwood Road, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Ari Salinger
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Ronak R Tilvawala
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Ling Li
- Department of Anatomy and Cell Biology and Faculty of Dentistry, McGill University, Montreal, QC H3A 0C7, Canada
| | - Hana Hakami
- Department of Anatomy and Cell Biology and Faculty of Dentistry, McGill University, Montreal, QC H3A 0C7, Canada
| | - Tao Liu
- Harvard Medical School, Boston, MA 02115, USA; Division of Allergy and Clinical Immunology, Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Konstantin Tsoyi
- Pulmonary, Critical Care and Sleep Medicine Section, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ivan O Rosas
- Pulmonary, Critical Care and Sleep Medicine Section, Baylor College of Medicine, Houston, TX 77030, USA
| | - Dieter P Reinhardt
- Department of Anatomy and Cell Biology and Faculty of Dentistry, McGill University, Montreal, QC H3A 0C7, Canada
| | - Paul R Thompson
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - I-Cheng Ho
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women's Hospital, 60 Fenwood Road, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA.
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12
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Role of Fibulins in Embryonic Stage Development and Their Involvement in Various Diseases. Biomolecules 2021; 11:biom11050685. [PMID: 34063320 PMCID: PMC8147605 DOI: 10.3390/biom11050685] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 12/24/2022] Open
Abstract
The extracellular matrix (ECM) plays an important role in the evolution of early metazoans, as it provides structural and biochemical support to the surrounding cells through the cell–cell and cell–matrix interactions. In multi-cellular organisms, ECM plays a pivotal role in the differentiation of tissues and in the development of organs. Fibulins are ECM glycoproteins, found in a variety of tissues associated with basement membranes, elastic fibers, proteoglycan aggregates, and fibronectin microfibrils. The expression profile of fibulins reveals their role in various developmental processes such as elastogenesis, development of organs during the embryonic stage, tissue remodeling, maintenance of the structural integrity of basement membrane, and elastic fibers, as well as other cellular processes. Apart from this, fibulins are also involved in the progression of human diseases such as cancer, cardiac diseases, congenital disorders, and chronic fibrotic disorders. Different isoforms of fibulins show a dual role of tumor-suppressive and tumor-promoting activities, depending on the cell type and cellular microenvironment in the body. Knockout animal models have provided deep insight into their role in development and diseases. The present review covers details of the structural and expression patterns, along with the role of fibulins in embryonic development and disease progression, with more emphasis on their involvement in the modulation of cancer diseases.
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13
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Byrling J, Kristl T, Hu D, Pla I, Sanchez A, Sasor A, Andersson R, Marko-Varga G, Andersson B. Mass spectrometry-based analysis of formalin-fixed, paraffin-embedded distal cholangiocarcinoma identifies stromal thrombospondin-2 as a potential prognostic marker. J Transl Med 2020; 18:343. [PMID: 32887625 PMCID: PMC7487897 DOI: 10.1186/s12967-020-02498-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 08/21/2020] [Indexed: 12/18/2022] Open
Abstract
Background Distal cholangiocarcinoma is an aggressive malignancy with a dismal prognosis. Diagnostic and prognostic biomarkers for distal cholangiocarcinoma are lacking. The aim of the present study was to identify differentially expressed proteins between distal cholangiocarcinoma and normal bile duct samples. Methods A workflow utilizing discovery mass spectrometry and verification by parallel reaction monitoring was used to analyze surgically resected formalin-fixed, paraffin-embedded samples from distal cholangiocarcinoma patients and normal bile duct samples. Bioinformatic analysis was used for functional annotation and pathway analysis. Immunohistochemistry was performed to validate the expression of thrombospondin-2 and investigate its association with survival. Results In the discovery study, a total of 3057 proteins were identified. Eighty-seven proteins were found to be differentially expressed (q < 0.05 and fold change ≥ 2 or ≤ 0.5); 31 proteins were upregulated and 56 were downregulated in the distal cholangiocarcinoma samples compared to controls. Bioinformatic analysis revealed an abundance of differentially expressed proteins associated with the tumor reactive stroma. Parallel reaction monitoring verified 28 proteins as upregulated and 18 as downregulated in distal cholangiocarcinoma samples compared to controls. Immunohistochemical validation revealed thrombospondin-2 to be upregulated in distal cholangiocarcinoma epithelial and stromal compartments. In paired lymph node metastases samples, thrombospondin-2 expression was significantly lower; however, stromal thrombospondin-2 expression was still frequent (72%). Stromal thrombospondin-2 was an independent predictor of poor disease-free survival (HR 3.95, 95% CI 1.09–14.3; P = 0.037). Conclusion Several proteins without prior association with distal cholangiocarcinoma biology were identified and verified as differentially expressed between distal cholangiocarcinoma and normal bile duct samples. These proteins can be further evaluated to elucidate their biomarker potential and role in distal cholangiocarcinoma carcinogenesis. Stromal thrombospondin-2 is a potential prognostic marker in distal cholangiocarcinoma.
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Affiliation(s)
- Johannes Byrling
- Department of Clinical Sciences Lund, Surgery, Lund University, and Skåne University Hospital, Lund, Sweden
| | - Theresa Kristl
- Department of Biomedical Engineering, Clinical Protein Science and Imaging, Lund University, Lund, Sweden
| | - Dingyuan Hu
- Department of Clinical Sciences Lund, Surgery, Lund University, and Skåne University Hospital, Lund, Sweden
| | - Indira Pla
- Department of Biomedical Engineering, Clinical Protein Science and Imaging, Lund University, Lund, Sweden
| | - Aniel Sanchez
- Department of Biomedical Engineering, Clinical Protein Science and Imaging, Lund University, Lund, Sweden
| | - Agata Sasor
- Department of Clinical Sciences Lund, Pathology, Lund University, and Skåne University Hospital, Lund, Sweden
| | - Roland Andersson
- Department of Clinical Sciences Lund, Surgery, Lund University, and Skåne University Hospital, Lund, Sweden
| | - György Marko-Varga
- Department of Biomedical Engineering, Clinical Protein Science and Imaging, Lund University, Lund, Sweden
| | - Bodil Andersson
- Department of Clinical Sciences Lund, Surgery, Lund University, and Skåne University Hospital, Lund, Sweden.
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14
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Martini P, Chiogna M, Calura E, Romualdi C. MOSClip: multi-omic and survival pathway analysis for the identification of survival associated gene and modules. Nucleic Acids Res 2019; 47:e80. [PMID: 31049575 PMCID: PMC6698707 DOI: 10.1093/nar/gkz324] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 03/29/2019] [Accepted: 04/29/2019] [Indexed: 01/09/2023] Open
Abstract
Survival analyses of gene expression data has been a useful and widely used approach in clinical applications. But, in complex diseases, such as cancer, the identification of survival-associated cell processes - rather than single genes - provides more informative results because the efficacy of survival prediction increases when multiple prognostic features are combined to enlarge the possibility of having druggable targets. Moreover, genome-wide screening in molecular medicine has rapidly grown, providing not only gene expression but also multi-omic measurements such as DNA mutations, methylation, expression, and copy number data. In cancer, virtually all these aberrations can contribute in synergy to pathological processes, and their measurements can improve a patient’s outcome and help in diagnosis and treatment decisions. Here, we present MOSClip, an R package implementing a new topological pathway analysis tool able to integrate multi-omic data and look for survival-associated gene modules. MOSClip tests the survival association of dimensionality-reduced multi-omic data using multivariate models, providing graphical devices for management, browsing and interpretation of results. Using simulated data we evaluated MOSClip performance in terms of false positives and false negatives in different settings, while the TCGA ovarian cancer dataset is used as a case study to highlight MOSClip’s potential.
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Affiliation(s)
- Paolo Martini
- Department of Biology, University of Padova, Via U.Bassi 58B, 35121 Padova, Italy
| | - Monica Chiogna
- Department of Statistical Sciences 'Paolo Fortunati', University of Bologna, via delle Belle Arti 41, 40126 Bologna, Italy
| | - Enrica Calura
- Department of Biology, University of Padova, Via U.Bassi 58B, 35121 Padova, Italy
| | - Chiara Romualdi
- Department of Biology, University of Padova, Via U.Bassi 58B, 35121 Padova, Italy
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15
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Hu X, Jiang W, Wang Z, Li L, Hu Z. NOX1 Negatively Modulates Fibulin-5 in Vascular Smooth Muscle Cells to Affect Aortic Dissection. Biol Pharm Bull 2019; 42:1464-1470. [DOI: 10.1248/bpb.b18-01012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Xiaoping Hu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University
| | - Wanli Jiang
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University
| | - Zhiwei Wang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University
| | - Luocheng Li
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University
| | - Zhipeng Hu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University
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16
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Ma H, Lian C, Song Y. Fibulin-2 inhibits development of gastric cancer by downregulating β-catenin. Oncol Lett 2019; 18:2799-2804. [PMID: 31452758 PMCID: PMC6676648 DOI: 10.3892/ol.2019.10599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 04/25/2019] [Indexed: 11/17/2022] Open
Abstract
The aim of the present study was to investigate the expression of fibulin-2 and β-catenin in gastric cancer tissues and the association to mutual regulation. Forty-nine cases of gastric cancer specimens obtained via surgical resection in the Pathology Department of Heping Hospital Affiliated to Changzhi Medical College from March 2013 to August 2017 were collected. The expression levels of fibulin-2 and β-catenin in 49 cases of gastric cancer and para-carcinoma tissues were detected via quantitative polymerase chain reaction and immunohistochemistry. The correlation of expression of fibulin-2 and β-catenin proteins in gastric cancer was detected via Spearman's analysis. The correlation of fibulin-2 and β-catenin protein expression with clinicopathological indexes of patients was also analyzed. Moreover, the fibulin-2 overexpression plasmid was constructed and transfected into human gastric cancer AGS and SGC-790 cell lines, so as to observe changes in β-catenin and its downstream indexes. Fibulin-2 messenger ribonucleic acid (mRNA) level in gastric cancer tissues was significantly lower than that in para-carcinoma tissues, while β-catenin mRNA level was significantly increased (P<0.05). The positive rate of fibulin-2 protein was 73.47% (36/49) in gastric cancer tissues and 16.33% (8/49) in para-carcinoma tissues, while that of β-catenin was 77.55% (38/49) in gastric cancer tissues and 28.57% (14/49) in para-carcinoma tissues, indicating that fibulin-2 protein is significantly deleted in gastric cancer tissues, and β-catenin protein is significantly upregulated (P<0.001). Fibulin-2 and β-catenin had a negative correlation (r=−0.361, P=0.003), but was closely correlated with the tumor size and lymph node metastasis (P<0.05). After overexpression of fibulin-2, expression of β-catenin, cyclin D1 and c-Myc protein was obviously downregulated (P<0.05). The tumor suppressor gene, fibulin-2, is significantly deleted in gastric cancer tissues, while β-catenin is remarkably enriched. Overexpression of fibulin-2 can inhibit the development of gastric cancer by downregulating β-catenin.
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Affiliation(s)
- Hongping Ma
- Department of Surgical Oncology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Changhong Lian
- Department of Surgical Oncology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Yingming Song
- Department of Surgical Oncology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
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Florian-Rodriguez M, Chin K, Hamner J, Acevedo J, Keller P, Word RA. Effect of Protease Inhibitors in Healing of the Vaginal Wall. Sci Rep 2019; 9:12354. [PMID: 31451729 PMCID: PMC6710245 DOI: 10.1038/s41598-019-48527-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 08/07/2019] [Indexed: 12/25/2022] Open
Abstract
Impaired elastogenesis and increased degradation of elastic fibers has been implicated in the pathogenesis of pelvic organ prolapse. Loss of the elastogenic organizer, fibulin-5 (FBLN5), leads to pelvic organ prolapse in mice. The objective of this study was to investigate the regulation of FBLN5 after surgical injury of the vaginal wall using the rat as a preclinical animal model. Both endogenous and recombinant FBLN5 were degraded after surgical injury. Estrogen did not alter the dramatic loss of vaginal FBLN5 in the acute phase after injury (12–48 h), but resulted in rescue of the poor recovery of FBLN5 levels in the late phase (7 d) of healing in ovariectomized animals. In contrast with estrogen, the general MMP inhibitor, actinonin, abrogated injury-induced degradation of FBLN5 significantly. Further, actinonin rescued the negative effects of injury on biomechanics, histomorphology, and elastic fibers. Control of excessive matrix degradation by local application of actinonin at the time of surgery may lead to improved elastic fiber regeneration and wound healing, thereby potentially enhancing pelvic floor recovery after reconstructive surgery for prolapse.
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Affiliation(s)
- Maria Florian-Rodriguez
- Department of Obstetrics and Gynecology Division of Female Pelvic Medicine and Reconstructive Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
| | - Kathleen Chin
- Department of Obstetrics and Gynecology Division of Female Pelvic Medicine and Reconstructive Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jennifer Hamner
- Department of Obstetrics and Gynecology Division of Female Pelvic Medicine and Reconstructive Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jesus Acevedo
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Patrick Keller
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - R Ann Word
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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18
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Jiang L, Qian J, Yang Y, Fan Y. Knockdown of MON1B Exerts Anti-Tumor Effects in Colon Cancer In Vitro. Med Sci Monit 2018; 24:7710-7718. [PMID: 30368516 PMCID: PMC6216441 DOI: 10.12659/msm.911002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background Colon cancer is one of the most common cancers in the world. We performed the present study to determine the molecular mechanism of MON1B in colon cancer cells. Material/Methods Colon cancer tissues and adjacent normal tissues were collected from 34 colon cancer patients. MON1B-silenced LoVo colon cancer cells were constructed. RT-qPCR and Western blot analysis were used to detect mRNA and protein levels, respectively, of colon cancer tissues and cells. Cell counting kit-8 (CCK-8), wound healing, and Transwell assays were used to detect viability, migration, and invasion, respectively, of colon cancer cells. Results The mRNA and protein levels of MON1B were higher in colon cancer tissues and human colon cancer cell lines (HT-29, SW480, COLO205, LoVo). Cell proliferation, migration, and invasion abilities were all inhibited when MON1B was silenced in LoVo colon cancer cells. Both the mRNA and protein levels of tissue inhibitor of metalloproteinase (TIMP)-2 and iκB were increased, while that of matrix metalloproteinases (MMP)-2, MMP-9, metastasis-associated genes (MTA)-1, nuclear factor-kappa B (NF-κB), and chemokine receptor type (CXCR)-4 was decreased when MON1B was silenced. Conclusions MON1B interference exerted anti-tumor effect in colon cancer in vitro.
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Affiliation(s)
- Lai Jiang
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Jun Qian
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Yongbo Yang
- Radiological Department, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
| | - Yongtian Fan
- Department of Colorectal Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland)
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