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Fu Y, Zhang M, Sui B, Yuan F, Zhang W, Weng Y, Xiang L, Li C, Shao L, You Y, Mao X, Zeng H, Chen D, Zhang M, Shi S, Hu X. Mesenchymal stem cell-derived apoptotic vesicles ameliorate impaired ovarian folliculogenesis in polycystic ovary syndrome and ovarian aging by targeting WNT signaling. Theranostics 2024; 14:3385-3403. [PMID: 38855175 PMCID: PMC11155401 DOI: 10.7150/thno.94943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 05/23/2024] [Indexed: 06/11/2024] Open
Abstract
Rationale: It has been emergingly recognized that apoptosis generates plenty of heterogeneous apoptotic vesicles (apoVs), which play a pivotal role in the maintenance of organ and tissue homeostasis. However, it is unknown whether apoVs influence postnatal ovarian folliculogenesis. Methods: Apoptotic pathway deficient mice including Fas mutant (Fasmut ) and Fas ligand mutant (FasLmut ) mice were used with apoV replenishment to evaluate the biological function of apoVs during ovarian folliculogenesis. Ovarian function was characterized by morphological analysis, biochemical examination and cellular assays. Mechanistical studies were assessed by combinations of transcriptomic and proteomic analysis as well as molecular assays. CYP17A1-Cre; Axin1fl /fl mice was established to verify the role of WNT signaling during ovarian folliculogenesis. Polycystic ovarian syndrome (PCOS) mice and 15-month-old mice were used with apoV replenishment to further validate the therapeutic effects of apoVs based on WNT signaling regulation. Results: We show that systemic administration of mesenchymal stem cell (MSC)-derived apoptotic vesicles (MSC-apoVs) can ameliorate impaired ovarian folliculogenesis, PCOS phenotype, and reduced birth rate in Fasmut and FasLmut mice. Mechanistically, transcriptome analysis results revealed that MSC-apoVs downregulated a number of aberrant gene expression in Fasmut mice, which were enriched by kyoto encyclopedia of genes and genomes (KEGG) pathway analysis in WNT signaling and sex hormone biosynthesis. Furthermore, we found that apoptotic deficiency resulted in aberrant WNT/β-catenin activation in theca and mural granulosa cells, leading to responsive action of dickkopf1 (DKK1) in the cumulus cell and oocyte zone, which downregulated WNT/β-catenin expression in oocytes and, therefore, impaired ovarian folliculogenesis via NPPC/cGMP/PDE3A/cAMP cascade. When WNT/β-catenin was specially activated in theca cells of CYP17A1-Cre; Axin1fl /fl mice, the same ovarian impairment phenotypes observed in apoptosis-deficient mice were established, confirming that aberrant activation of WNT/β-catenin in theca cells caused the impairment of ovarian folliculogenesis. We firstly revealed that apoVs delivered WNT membrane receptor inhibitor protein RNF43 to ovarian theca cells to balance follicle homeostasis through vesicle-cell membrane integration. Systemically infused RNF43-apoVs down-regulated aberrantly activated WNT/β-catenin signaling in theca cells, contributing to ovarian functional maintenance. Since aging mice have down-regulated expression of WNT/β-catenin in oocytes, we used MSC-apoVs to treat 15-month-old mice and found that MSC-apoVs effectively ameliorated the ovarian function and fertility capacity of these aging mice through rescuing WNT/β-catenin expression in oocytes. Conclusion: Our studies reveal a previously unknown association between apoVs and ovarian folliculogenesis and suggest an apoV-based therapeutic approach to improve oocyte function and birth rates in PCOS and aging.
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Affiliation(s)
- Yu Fu
- Fujian Key Laboratory of Developmental and Neural Biology & Southern Center for Biomedical Research, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350117, China
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, South China Center of Craniofacial Stem Cell Research, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China
| | - Manjin Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, South China Center of Craniofacial Stem Cell Research, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510055, China
| | - Bingdong Sui
- Research and Development Center for Tissue Engineering, The Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - FeiFei Yuan
- Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Wenbo Zhang
- Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Yashuang Weng
- Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Lei Xiang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, South China Center of Craniofacial Stem Cell Research, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China
| | - Can Li
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, South China Center of Craniofacial Stem Cell Research, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China
| | - Longquan Shao
- Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong 510055, China
| | - Yong You
- Department of Neurology, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan 570013, China
- International Center for Aging and Cancer (ICAC), Hainan Medical University. Haikou, Hainan 570013, China
- Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province. Haikou, Hainan 570013, China
| | - Xueli Mao
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, South China Center of Craniofacial Stem Cell Research, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China
| | - Haitao Zeng
- Reproductive Medicine Research Center, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510055, China
| | - Di Chen
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Meijia Zhang
- Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, China
| | - Songtao Shi
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, South China Center of Craniofacial Stem Cell Research, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China
| | - Xuefeng Hu
- Fujian Key Laboratory of Developmental and Neural Biology & Southern Center for Biomedical Research, College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350117, China
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Yuan L, Xie S, Bai H, Liu X, Cai P, Lu J, Wang C, Lin Z, Li S, Guo Y, Cai S. Reconstruction of dynamic mammary mini gland in vitro for normal physiology and oncogenesis. Nat Methods 2023; 20:2021-2033. [PMID: 37919421 DOI: 10.1038/s41592-023-02039-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 08/22/2023] [Indexed: 11/04/2023]
Abstract
Organoid culture has been extensively exploited for normal tissue reconstruction and disease modeling. However, it is still challenging to establish organoids that mimic in vivo-like architecture, size and function under homeostatic conditions. Here we describe the development of a long-term adult stem cell-derived mammary mini gland culture system that supports robust three-dimensional outgrowths recapitulating the morphology, scale, cellular context and transcriptional heterogeneity of the normal mammary gland. The self-organization ability of stem cells and the stability of the outgrowths were determined by a coordinated combination of extracellular matrix, environmental signals and dynamic physiological cycles. We show that these mini glands were hormone responsive and could recapitulate the entire postnatal mammary development including puberty, estrus cycle, lactation and involution. We also observed that these mini glands maintained the presence of mammary stem cells and could also recapitulate the fate transition from embryonic bipotency to postnatal unipotency in lineage tracing assays. In addition, upon induction of oncogene expression in the mini glands, we observed tumor initiation in vitro and in vivo in a mouse model. Together, this study provides an experimental system that can support a dynamic miniature mammary gland for the study of physiologically relevant, complex biological processes.
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Affiliation(s)
- Lei Yuan
- Fudan University, Shanghai, China
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Shaofang Xie
- Fudan University, Shanghai, China
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Huiru Bai
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Xiaoqin Liu
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
- College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Pei Cai
- Fudan University, Shanghai, China
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Jing Lu
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
- Institute of Basic Medical Sciences, Westlake Institute for Advanced Study, Hangzhou, China
| | - Chunhui Wang
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
- Westlake Disease Modeling Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, China
| | - Zuobao Lin
- Fudan University, Shanghai, China
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Shuying Li
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
- Westlake Disease Modeling Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, China
| | - Yajing Guo
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Shang Cai
- Westlake Laboratory of Life Sciences and Biomedicine, School of Life Sciences, Westlake University, Hangzhou, China.
- Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China.
- Westlake Disease Modeling Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, China.
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Nazar M, Abdalla IM, Chen Z, Ullah N, Liang Y, Chu S, Xu T, Mao Y, Yang Z, Lu X. Genome-Wide Association Study for Udder Conformation Traits in Chinese Holstein Cattle. Animals (Basel) 2022; 12:2542. [PMID: 36230283 PMCID: PMC9559277 DOI: 10.3390/ani12192542] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Udder conformation traits are one of the most economic traits in dairy cows, greatly affecting animal health, milk production, and producer profitability in the dairy industry. Genetic analysis of udder structure and scores have been developed in Holstein cattle. In our research, we conducted a genome-wide association study for five udder traits, including anterior udder attachment (AUA), central suspensory ligament (CSL), posterior udder attachment height (PUAH), posterior udder attachment width (PUAW), and udder depth (UD), in which the fixed and random model circulating probability unification (FarmCPU) model was applied for the association analysis. The heritability and the standard errors of these five udder traits ranged from 0.04 ± 0.00 to 0.49 ± 0.03. Phenotype data were measured from 1000 Holstein cows, and the GeneSeek Genomic Profiler (GGP) Bovine 100 K SNP chip was used to analyze genotypic data in Holstein cattle. For GWAS analysis, 984 individual cows and 84,407 single-nucleotide polymorphisms (SNPs) remained after quality control; a total of 18 SNPs were found at the GW significant threshold (p < 5.90 × 10−7). Many candidate genes were identified within 200kb upstream or downstream of the significant SNPs, which include MGST1, MGST2, MTUS1, PRKN, STXBP6, GRID2, E2F8, CDH11, FOXP1, SLF1, TMEM117, SBF2, GC, ADGRB3, and GCLC. Pathway analysis revealed that 58 Gene Ontology (GO) terms and 18 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were enriched with adjusted p values, and these GO terms and the KEGG pathway analysis were associated with biological information, metabolism, hormonal growth, and development processes. These results could give valuable biological information for the genetic architecture of udder conformation traits in dairy Holstein cattle.
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Affiliation(s)
- Mudasir Nazar
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | | | - Zhi Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Numan Ullah
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Yan Liang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Shuangfeng Chu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Tianle Xu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China
| | - Yongjiang Mao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Zhangping Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Xubin Lu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
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Jena MK, Jaswal S, Kumar S, Mohanty AK. Molecular mechanism of mammary gland involution: An update. Dev Biol 2019; 445:145-155. [DOI: 10.1016/j.ydbio.2018.11.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 10/01/2018] [Accepted: 11/06/2018] [Indexed: 12/11/2022]
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Richard JLC, Eichhorn PJA. Deciphering the roles of lncRNAs in breast development and disease. Oncotarget 2018; 9:20179-20212. [PMID: 29732012 PMCID: PMC5929455 DOI: 10.18632/oncotarget.24591] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 02/21/2018] [Indexed: 02/06/2023] Open
Abstract
Breast cancer is the second leading cause of cancer related deaths in women. It is therefore important to understand the mechanisms underlying breast cancer development as well as raises the need for enhanced, non-invasive strategies for novel prognostic and diagnostic methods. The emergence of long non-coding RNAs (lncRNAs) as potential key players in neoplastic disease has received considerable attention over the past few years. This relatively new class of molecular regulators has been shown from ongoing research to act as critical players for key biological processes. Deregulated expression levels of lncRNAs have been observed in a number of cancers including breast cancer. Furthermore, lncRNAs have been linked to breast cancer initiation, progression, metastases and to limit sensitivity to certain targeted therapeutics. In this review we provide an update on the lncRNAs associated with breast cancer and mammary gland development and illustrate the versatility of such lncRNAs in gene control, differentiation and development both in normal physiological conditions and in diseased states. We also highlight the therapeutic and diagnostic potential of lncRNAs in cancer.
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Affiliation(s)
- John Lalith Charles Richard
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
- Current Address: Genome Institute of Singapore, Agency for Science Technology and Research, 138672, Singapore
| | - Pieter Johan Adam Eichhorn
- Cancer Science Institute of Singapore, National University of Singapore, 117599, Singapore
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
- School of Pharmacy, Curtin University, Perth, 6845, Australia
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6
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Proliferation-apoptosis balance inStaphylococcus aureuschronically infected bovine mammary glands during involution. J DAIRY RES 2017; 84:181-189. [DOI: 10.1017/s002202991700005x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The objective of this study was to determine whetherStaphylococcus aureuschronic intramammary infection (IMI) influences expression of proteins related to regulation of proliferation and apoptosis processes and proliferation/apoptosis index during active involution in bovine mammary gland. Twenty-one Holstein non-pregnant cows in late lactation either uninfected or with chronic naturally acquiredS. aureusIMI were included in this study. Cows were slaughtered at 7, 14 and 21 d after cessation of milking and samples for immunohistochemical analysis were taken. Protein expression of Bcl-2, Bax, Fas and active caspase-3 in mammary tissue was significantly affected by chronicS. aureusIMI, all showing increased immunoexpression inS. aureus-infected quarters at all involution stages. The percentage of apoptotic cells was increased by IMI in both mammary parenchyma and stroma, and the percentage of parenchymal and stromal cell proliferation was also increased. The proliferation/apoptosis ratio was significantly increased by IMI only in stromal cells. This imbalance to favour proliferation inS. aureus-infected mammary quarters could be one of the underlying causes that induce aberrant involution with permanence of nonsecretory tissue and increase of stromal components.
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Cannizzo FT, Pegolo S, Pregel P, Manuali E, Salamida S, Divari S, Scaglione FE, Bollo E, Biolatti B, Bargelloni L. Morphological Examination and Transcriptomic Profiling To Identify Prednisolone Treatment in Beef Cattle. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:8435-8446. [PMID: 27741397 DOI: 10.1021/acs.jafc.6b02996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In livestock production corticosteroids are licensed only for therapy; nevertheless, they are often illegally used as growth promoters. The aim of this study was to identify morphological or biomolecular alterations induced by prednisolone (PDN) in experimentally treated beef cattle, because PDN and its metabolites are no longer detectable by LC-MS/MS methods in biological fluids. Moreover, PDN does not induce any histological alterations in the thymus, different from dexamethasone treatments. Therefore, a marker of illicit treatment for this growth promoter could be useful. Eight male Italian Friesian beef cattle were administered prednisolone acetate 30 mg day-1 per os for 35 days, and seven beef cattle represented the control group. Six days after drug withdrawal, the animals were slaughtered. Morphological and morphometric modifications were evaluated in the epididymis and testis, whereas transcriptomic changes induced by PDN administration were investigated in peripheral blood mononuclear cells (PBMCs) at different sampling times and in skeletal muscle and testis sampled at slaughtering. In the epididymis, spermatozoa number decreased in PDN-treated animals, and in some cases they were totally absent. Correspondingly, in the testis of treated animals, down-regulation for serine/threonine kinase 11 (STK11) gene expression was detected (p < 0.01). DNA microarray analysis revealed a total of 133 differentially expressed genes in skeletal muscle and testis, and 907 and 1416 in PBMCs after 33 days of treatment and at slaughtering, respectively. Histological investigations on epididymal content could represent a promising marker for PDN treatment in beef cattle and could be used as a screening method to identify animals worthy of further investigation with official methods. Moreover, the clear transcriptomic signature of PDN treatment evidenced in PBMCs supported the possibility of using this matrix to monitor the illicit treatment in vivo during ranching.
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Affiliation(s)
- Francesca T Cannizzo
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino , Largo P. Braccini 2, 10095 Grugliasco (TO), Italy
| | - Sara Pegolo
- Dipartimento di Biomedicina Comparata e Alimentazione, Università di Padova , Viale dell'Università 16, 35020 Legnaro, Padova, Italy
| | - Paola Pregel
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino , Largo P. Braccini 2, 10095 Grugliasco (TO), Italy
| | - Elisabetta Manuali
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche , Via G. Salvemini 1, 06126 Perugia, Italy
| | - Sonia Salamida
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche , Via G. Salvemini 1, 06126 Perugia, Italy
| | - Sara Divari
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino , Largo P. Braccini 2, 10095 Grugliasco (TO), Italy
| | - Frine E Scaglione
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino , Largo P. Braccini 2, 10095 Grugliasco (TO), Italy
| | - Enrico Bollo
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino , Largo P. Braccini 2, 10095 Grugliasco (TO), Italy
| | - Bartolomeo Biolatti
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino , Largo P. Braccini 2, 10095 Grugliasco (TO), Italy
| | - Luca Bargelloni
- Dipartimento di Biomedicina Comparata e Alimentazione, Università di Padova , Viale dell'Università 16, 35020 Legnaro, Padova, Italy
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Sapi E, Brown WD, Aschkenazi S, Lim C, Munoz A, Kacinski BM, Rutherford T, Mor G. Regulation of Fas Ligand Expression By Estrogen in Normal Ovary. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/107155760200900411] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Eva Sapi
- Departments of Therapeutic Radiology and Obstetrics and Gynecology, Yale University School of Medicine, New Haven, Connecticut
| | | | | | | | | | | | | | - Gil Mor
- Departments of Therapeutic Radiology and Obstetrics and Gynecology, Yale University School of Medicine, New Haven, Connecticut
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Luddy KA, Robertson-Tessi M, Tafreshi NK, Soliman H, Morse DL. The role of toll-like receptors in colorectal cancer progression: evidence for epithelial to leucocytic transition. Front Immunol 2014; 5:429. [PMID: 25368611 PMCID: PMC4202790 DOI: 10.3389/fimmu.2014.00429] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 08/22/2014] [Indexed: 01/08/2023] Open
Abstract
Toll-like receptors (TLRs) are expressed by immune cells, intestinal epithelium, and tumor cells. In the homeostatic setting, they help to regulate control over invading pathogens and maintain the epithelial lining of the large and small intestines. Aberrant expression of certain TLRs by tumor cells can induce growth inhibition while others contribute to tumorigenesis and progression. Activation of these TLRs can induce inflammation, tumor cell proliferation, immune evasion, local invasion, and distant metastasis. These TLR-influenced behaviors have similarities with properties observed in leukocytes, suggesting that tumors may be hijacking immune programs to become more aggressive. The concept of epithelial to leucocytic-transition (ELT) is proposed, akin to epithelial to mesenchymal transition, in which tumors develop the ability to activate leucocytic traits otherwise inaccessible to epithelial cells. Understanding the mechanisms of ELT could lead to novel therapeutic strategies for inhibiting tumor metastasis.
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Affiliation(s)
- Kimberly A Luddy
- Department of Cancer Imaging and Metabolism, Imaging and Technology Center of Excellence, H. Lee Moffitt Cancer Center , Tampa, FL , USA
| | - Mark Robertson-Tessi
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center , Tampa, FL , USA
| | - Narges K Tafreshi
- Department of Cancer Imaging and Metabolism, Imaging and Technology Center of Excellence, H. Lee Moffitt Cancer Center , Tampa, FL , USA
| | - Hatem Soliman
- Don and Erika Wallace Comprehensive Breast Program, Center for Women's Oncology, H. Lee Moffitt Cancer Center and Research Institute , Tampa, FL , USA
| | - David L Morse
- Department of Cancer Imaging and Metabolism, Imaging and Technology Center of Excellence, H. Lee Moffitt Cancer Center , Tampa, FL , USA
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Di HS, Wang LG, Wang GL, Zhou L, Yang YY. The Signaling Mechanism of TGF-β1 Induced Bovine Mammary Epithelial Cell Apoptosis. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 25:304-10. [PMID: 25049567 PMCID: PMC4092962 DOI: 10.5713/ajas.2011.11251] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 11/13/2011] [Accepted: 11/02/2011] [Indexed: 01/19/2023]
Abstract
The present study showed that Transforming growth factor beta 1 (TGF-β1) can induce apoptosis of bovine mammary epithelial cells. This apoptosis was also observed with phosphorylation of Smad2/3 within 0.5–2 h. Afterwards the signal transferred into the nucleus. Moreover, intracellular free Ca2+ concentration was significantly elevated as well as Caspase-3 activated and DNA lysised, thereby inducing the programmed cell death. This signaling pathway of TGF-β1 was blocked by SB-431542 (10−2 μM) via inhibiting ALK-5 kinase activity, which thus reversed the anti-proliferation and apoptosis effect of TGF-β1 in mammary epithelial cells. These results indicated that TGF-β1 induced apoptosis of bovine mammary epithelial cells through the ALK-5-Smad2/3 pathway, which plays an important role in inhibiting survival of mammary epithelial cells. Moreover, intracellular Ca2+ also played a critical role in TGF-β1-induced cell apoptosis.
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Affiliation(s)
- He-Shuang Di
- Department of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China ; Jiangsu Animal Husbandry and Veterinary College, Taizhou 225300, China
| | - Li-Gang Wang
- Jiangsu Animal Husbandry and Veterinary College, Taizhou 225300, China
| | - Gen-Lin Wang
- Department of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lei Zhou
- Department of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuan-Yuan Yang
- Department of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
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Macias H, Hinck L. Mammary gland development. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2014; 1:533-57. [PMID: 22844349 DOI: 10.1002/wdev.35] [Citation(s) in RCA: 475] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The mammary gland develops through several distinct stages. The first transpires in the embryo as the ectoderm forms a mammary line that resolves into placodes. Regulated by epithelial–mesenchymal interactions, the placodes descend into the underlying mesenchyme and produce the rudimentary ductal structure of the gland present at birth. Subsequent stages of development—pubertal growth, pregnancy, lactation, and involution—occur postnatally under the regulation of hormones. Puberty initiates branching morphogenesis, which requires growth hormone (GH) and estrogen, as well as insulin-like growth factor 1 (IGF1), to create a ductal tree that fills the fat pad. Upon pregnancy, the combined actions of progesterone and prolactin generate alveoli, which secrete milk during lactation. Lack of demand for milk at weaning initiates the process of involution whereby the gland is remodeled back to its prepregnancy state. These processes require numerous signaling pathways that have distinct regulatory functions at different stages of gland development. Signaling pathways also regulate a specialized subpopulation of mammary stem cells that fuel the dramatic changes in the gland occurring with each pregnancy. Our knowledge of mammary gland development and mammary stem cell biology has significantly contributed to our understanding of breast cancer and has advanced the discovery of therapies to treat this disease.
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Affiliation(s)
- Hector Macias
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, CA, USA
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The serum miR-21 level serves as a predictor for the chemosensitivity of advanced pancreatic cancer, and miR-21 expression confers chemoresistance by targeting FasL. Mol Oncol 2012. [PMID: 23177026 DOI: 10.1016/j.molonc.2012.10.011] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
miR-21 expression in cancer tissue has been reported to be associated with the clinical outcome and activity of gemcitabine in pancreatic cancer. However, resection is possible in only a minority of patients due to the advanced stages often present at the time of diagnosis, and safely obtaining sufficient quantities of pancreatic tumor tissue for molecular analysis is difficult at the unresectable stages. In this study, we investigated whether the serum level of miR-21 could be used as a predictor of chemosensitivity. We tested the levels of serum miR-21 in a cohort of 177 cases of advanced pancreatic cancer who received gemcitabine-based palliative chemotherapy. We found that a high level of miR-21 in the serum was significantly correlated with a shortened time-to-progression (TTP) and a lower overall survival (OS). The serum miR-21 level was an independent prognostic factor for both the TTP and the OS (HR 1.920; 95% CI, 1.274-2.903, p = 0.002 for TTP and HR 1.705; 95% CI, 1.147-2.535, p = 0.008 for OS). The results from a functional study showed that gemcitabine exposure down-regulated miR-21 expression and up-regulated FasL expression. The increased FasL expression following gemcitabine treatment induced cancer cell apoptosis, whereas the ectopic expression of miR-21 partially protected the cancer cells from gemcitabine-induced apoptosis. Additionally, we confirmed that FasL was a direct target of miR-21. Therefore, the serum level of miR-21 may serve as a predictor of chemosensitivity in advanced pancreatic cancer. Additionally, we identified a new mechanism of chemoresistance mediated by the effects of miR-21 on the FasL/Fas pathway.
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TIMP3 regulates mammary epithelial apoptosis with immune cell recruitment through differential TNF dependence. PLoS One 2011; 6:e26718. [PMID: 22053204 PMCID: PMC3203873 DOI: 10.1371/journal.pone.0026718] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 10/03/2011] [Indexed: 01/14/2023] Open
Abstract
Post-lactation mammary involution is a homeostatic process requiring epithelial apoptosis and clearance. Given that the deficiency of the extracellular metalloproteinase inhibitor TIMP3 impacts epithelial apoptosis and heightens inflammatory response, we investigated whether TIMP3 regulates these distinct processes during the phases of mammary gland involution in the mouse. Here we show that TIMP3 deficiency leads to TNF dysregulation, earlier caspase activation and onset of mitochondrial apoptosis. This accelerated first phase of involution includes faster loss of initiating signals (STAT3 activation; TGFβ3) concurrent with immediate luminal deconstruction through E-cadherin fragmentation. Epithelial apoptosis is followed by accelerated adipogenesis and a greater macrophage and T-cell infiltration in Timp3(-/-) involuting glands. Crossing in Tnf deficiency abrogates caspase 3 activation, but heightens macrophage and T-cell influx into Timp3(-/-) glands. The data indicate that TIMP3 differentially impacts apoptosis and inflammatory cell influx, based on involvement of TNF, during the process of mammary involution. An understanding of the molecular factors and wound healing microenvironment of the postpartum mammary gland may have implications for understanding pregnancy-associated breast cancer risk.
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Jaita G, Zárate S, Ferrari L, Radl D, Ferraris J, Eijo G, Zaldivar V, Pisera D, Seilicovich A. Gonadal steroids modulate Fas-induced apoptosis of lactotropes and somatotropes. Endocrine 2011; 39:21-7. [PMID: 21069582 DOI: 10.1007/s12020-010-9407-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Accepted: 09/16/2010] [Indexed: 11/27/2022]
Abstract
We have previously reported that Fas activation induces apoptosis of anterior pituitary cells from rats at proestrus but not at diestrus and in an estrogen-dependent manner. In this study, we evaluated the effect of Fas activation on apoptosis of lactotropes and somatotropes during the estrous cycle and explored the action of gonadal steroids on Fas-induced apoptosis. Also, we studied whether changes in Fas expression are involved in the apoptotic response of anterior pituitary cells. Fas activation increased the percentage of TUNEL-positive lactotropes and somatotropes at proestrus but not at diestrus. FasL triggered apoptosis of somatotropes only when cells from ovariectomized rats were cultured in the presence of 17 β-estradiol (E2). Progesterone (P4) blocked the apoptotic action of the Fas/FasL system in lactotropes and somatotropes incubated with E2. Both E2 and P4 increased the percentage of cells expressing Fas at the cell membrane. Our results show that Fas activation induces apoptosis of lactotropes and somatotropes at proestrus but not at diestrus. Gonadal steroids may be involved in the apoptotic response of lactotropes and somatotropes, suggesting that Fas activation is implicated in the renewal of these pituitary subpopulations during the estrous cycle. The effect of gonadal steroids on Fas expression may be only partially involved in regulation of the Fas/FasL apoptotic pathway in the anterior pituitary gland.
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Affiliation(s)
- Gabriela Jaita
- Facultad de Medicina, Instituto de Investigaciones en Reproducción, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires, Argentina
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15
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Owens TW, Foster FM, Tanianis-Hughes J, Cheung JY, Brackenbury L, Streuli CH. Analysis of inhibitor of apoptosis protein family expression during mammary gland development. BMC DEVELOPMENTAL BIOLOGY 2010; 10:71. [PMID: 20584313 PMCID: PMC2905336 DOI: 10.1186/1471-213x-10-71] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Accepted: 06/28/2010] [Indexed: 11/19/2022]
Abstract
Background Inhibitors-of-Apoptosis-Proteins (IAPs) are an evolutionarily conserved family of proteins capable of regulating several facets of apoptosis. IAPs are frequently dysregulated in cancer, but their role in the regulation of apoptosis during developmental processes is not fully understood. Here we examined the expression of IAPs during the post-natal development of the mouse mammary gland, which is a tissue that exhibits a profound induction of apoptosis during involution. Results Six out of eight mammalian IAP family members are expressed in the mammary gland. Notably, quantitative PCR and immunoblotting revealed that XIAP, c-IAP1 and c-IAP2 are down-regulated in pregnancy and lactation, and prior to the onset of involution. In cultured mammary epithelial cells (MECs), XIAP levels decreased in response to inhibition of growth factor signalling. Maintaining XIAP levels in MECs by expressing exogenous XIAP protected them from all apoptotic stimuli tested. Conclusions These data suggest that the developmental regulation of IAP expression in vivo contributes to naturally occurring programmes of cell death.
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Affiliation(s)
- Thomas W Owens
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester, M13 9PT, UK
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16
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McCready J, Arendt LM, Rudnick JA, Kuperwasser C. The contribution of dynamic stromal remodeling during mammary development to breast carcinogenesis. Breast Cancer Res 2010; 12:205. [PMID: 20584344 PMCID: PMC2917019 DOI: 10.1186/bcr2578] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Breast cancer is a heterogeneous disease whose prognosis varies depending upon the developmental stage of the breast tissue at diagnosis. Notably, breast cancers associated with pregnancy exhibit increased rates of metastasis and poorer long-term survival compared to those diagnosed after menopause. However, postmenopausal breast cancers associated with obesity exhibit a more aggressive behavior and confer decreased overall patient survival compared to those diagnosed in non-obese individuals. Since the mammary gland is a dynamic tissue that undergoes significant changes throughout a woman's lifetime, especially during pregnancy and following menopause, we present evidence to support the notion that changes occurring throughout development within the mammary stromal compartment may account for some of the biological differences in breast cancer subtypes and behaviors.
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Affiliation(s)
- Jessica McCready
- Department of Anatomy and Cellular Biology, Sackler School, Tufts University School of Medicine, 136 Harrison Ave., Boston, MA 02111, USA.
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17
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Nitric oxide triggers mammary gland involution after weaning: remodelling is delayed but not impaired in mice lacking inducible nitric oxide synthase. Biochem J 2010; 428:451-62. [DOI: 10.1042/bj20091091] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
During mammary gland involution, different signals are required for apoptosis and tissue remodelling. To explore the role of NO in the involution of mammary tissue after lactation, NOS2 (inducible nitric oxide synthase)-KO (knockout) mice were used. No apparent differences were observed between NOS2-KO and WT (wild-type) animals during pregnancy and lactation. However, upon cessation of lactation, a notable delay in involution was observed, compared with WT mice. NOS2-KO mice showed increased phosphorylation of STAT (signal transducer and activator of transcription) 5 during weaning, concomitant with increased β-casein mRNA levels when compared with weaned WT glands, both hallmarks of the lactating period. In contrast, activation of STAT3, although maximal at 24 h after weaning, was significantly reduced in NOS2-KO mice. STAT3 and NF-κB (nuclear factor κB) signalling pathways are known to be crucial in the regulation of cell death and tissue remodelling during involution. Indeed, activation of both STAT3 and NF-κB was observed in WT mice during weaning, concomitant with an increased apoptotic rate. During the same period, less apoptosis, in terms of caspase 3 activity, was found in NOS2-KO mice and NF-κB activity was significantly reduced when compared with WT mice. Furthermore, the activation of the NF-κB signalling pathway is delayed in NOS2-KO mice when compared with WT mice. These results emphasize the role of NO in the fine regulation of the weaning process, since, in the absence of NOS2, the switching on of the cascades that trigger involution is hindered for a time, retarding apoptosis of the epithelial cells and extracellular matrix remodelling.
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18
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Ginestier C, Liu S, Diebel ME, Korkaya H, Luo M, Brown M, Wicinski J, Cabaud O, Charafe-Jauffret E, Birnbaum D, Guan JL, Dontu G, Wicha MS. CXCR1 blockade selectively targets human breast cancer stem cells in vitro and in xenografts. J Clin Invest 2010; 120:485-97. [PMID: 20051626 DOI: 10.1172/jci39397] [Citation(s) in RCA: 571] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Accepted: 11/11/2009] [Indexed: 12/14/2022] Open
Abstract
Recent evidence suggests that breast cancer and other solid tumors possess a rare population of cells capable of extensive self-renewal that contribute to metastasis and treatment resistance. We report here the development of a strategy to target these breast cancer stem cells (CSCs) through blockade of the IL-8 receptor CXCR1. CXCR1 blockade using either a CXCR1-specific blocking antibody or repertaxin, a small-molecule CXCR1 inhibitor, selectively depleted the CSC population in 2 human breast cancer cell lines in vitro. Furthermore, this was followed by the induction of massive apoptosis in the bulk tumor population via FASL/FAS signaling. The effects of CXCR1 blockade on CSC viability and on FASL production were mediated by the FAK/AKT/FOXO3A pathway. In addition, repertaxin was able to specifically target the CSC population in human breast cancer xenografts, retarding tumor growth and reducing metastasis. Our data therefore suggest that CXCR1 blockade may provide a novel means of targeting and eliminating breast CSCs.
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Affiliation(s)
- Christophe Ginestier
- University of Michigan Comprehensive Cancer Center, Department of Internal Medicine/Oncology, Ann Arbor, Michigan 48109-0015, USA.
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19
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De Zoysa M, Nikapitiya C, Moon DO, Whang I, Kim GY, Lee J. A novel Fas ligand in mollusk abalone: molecular characterization, immune responses and biological activity of the recombinant protein. FISH & SHELLFISH IMMUNOLOGY 2009; 27:423-432. [PMID: 19576285 DOI: 10.1016/j.fsi.2009.06.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2009] [Revised: 06/08/2009] [Accepted: 06/11/2009] [Indexed: 05/28/2023]
Abstract
Fas ligand is a member of the TNF superfamily that plays an important role by inducing apoptosis and homeostasis of immune responses. The gene encoding Fas ligand was isolated from a disk abalone (Haliotis discus discus) cDNA library, denoted as the AbFas ligand. It contains an 1832bp transcript with a 945bp open reading frame, encoding 315 amino acids. The AbFas ligand showed characteristic transmembrane and TNF family signature domains. The deduced amino acid comparison showed that the AbFas ligand exhibits 22.0, 16.1 and 14.5% identities to human Fas ligand, TNF-alpha, and lymphotoxin (LT-alpha), respectively. Phylogenetic analysis indicates that the AbFas ligand belongs to the invertebrate TNF family and it is closely related to vertebrate Fas ligand counterparts. Quantitative real-time PCR analysis results showed that the AbFas ligand transcripts were constitutively expressed in abalone hemocytes, gills, mantle, muscle, digestive tract and digestive gland in a tissue-specific manner. By immune stimulation, AbFas ligand mRNA was significantly (p<0.05) up-regulated after infection with a mixture of bacteria (Vibrio alginolyticus, Vibrio parahemolyticus, and Listeria monocytogenes), viral haemorrhagic septicaemia virus (VHSV), and lipopolysaccharide (LPS) in abalone gills. The recombinant AbFas ligand was over-expressed in Escherichia coli (E. coli) and purified using a pMAL protein fusion system. This recombinant AbFas ligand showed its biological activity by inducing both superoxide anion (O(2-) and H(2)O(2) in human THP-1 cells in concentration-dependant manner. Correlating the AbFas ligand transcriptional up-regulation against bacteria, virus and LPS with the biological activity of its recombinant protein, we could suggest that the abalone Fas ligand may control microbial infection by inducing O(2-), H(2)O(2) and other ROS.
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Affiliation(s)
- Mahanama De Zoysa
- Department of Marine Life Sciences, College of Ocean Science, Jeju National University, Jeju Special Self-Governing Province 690-756, Republic of Korea
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20
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Kwak-Kim J, Yang KM, Gilman-Sachs A. Recurrent pregnancy loss: A disease of inflammation and coagulation. J Obstet Gynaecol Res 2009; 35:609-22. [DOI: 10.1111/j.1447-0756.2009.01079.x] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Shackleton M, O'Reilly LA, Sutherland KD, Bath ML, Ellis S, Strasser A, Visvader JE, Lindeman GJ. Impaired lactation in mice expressing dominant-negative FADD in mammary epithelium. Dev Dyn 2009; 238:1010-6. [PMID: 19301394 DOI: 10.1002/dvdy.21917] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The Fas-associated death domain (FADD/Mort1) adaptor protein was originally identified as a key mediator of apoptosis, although pleiotropic functions for FADD have also been reported. FADD-mediated tumoricidal effects have been described in breast cancer cells; however, its physiological role in normal mammary gland epithelium is not well understood. To determine the role of FADD signaling during mammary gland development, we generated transgenic mice overexpressing dominant-negative FADD (DN-FADD) in mammary epithelium, using the steroid responsive mouse mammary tumor virus promoter. Transgenic mice exhibited a perturbation in lactation resulting in impaired milk production and pup growth retardation. Reduced expansion of alveoli was evident during early lactation with extensive shedding of luminal alveolar cells. Significantly more TUNEL (terminal deoxynucleotidyl transferase-mediated deoxyuridinetriphosphate nick end-labeling)-positive cells were present at this time point and a subsequent increase in bromodeoxyuridine-positive cells was observed. These findings suggest a role for FADD in maintaining the survival of mammary secretory alveolar cells after the establishment of lactation.
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Affiliation(s)
- Mark Shackleton
- Molecular Genetics of Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
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22
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Radisky DC, Hartmann LC. Mammary involution and breast cancer risk: transgenic models and clinical studies. J Mammary Gland Biol Neoplasia 2009; 14:181-91. [PMID: 19404726 PMCID: PMC2693781 DOI: 10.1007/s10911-009-9123-y] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Accepted: 04/16/2009] [Indexed: 12/15/2022] Open
Abstract
Postlactational involution is the process following weaning during which the mammary gland undergoes massive cell death and tissue remodeling as it returns to the pre-pregnant state. Lobular involution is the process by which the breast epithelial tissue is gradually lost with aging of the mammary gland. While postlactational involution and lobular involution are distinct processes, recent studies have indicated that both are related to breast cancer development. Experiments using a variety of rodent models, as well as observations in human populations, suggest that deregulation of postlactational involution may act to facilitate tumor formation. By contrast, new human studies show that completion of lobular involution protects against subsequent breast cancer incidence.
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Affiliation(s)
- Derek C. Radisky
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224 USA
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23
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Chen CS, Nelson CM, Khauv D, Bennett S, Radisky ES, Hirai Y, Bissell MJ, Radisky DC. Homology with vesicle fusion mediator syntaxin-1a predicts determinants of epimorphin/syntaxin-2 function in mammary epithelial morphogenesis. J Biol Chem 2009; 284:6877-84. [PMID: 19129200 DOI: 10.1074/jbc.m805908200] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We have shown that branching morphogenesis of mammary ductal structures requires the action of the morphogen epimorphin/syntaxin-2. Epimorphin, originally identified as an extracellular molecule, is identical to syntaxin-2, an intracellular molecule that is a member of the extensively investigated syntaxin family of proteins that mediate vesicle trafficking. We show here that, although epimorphin/syntaxin-2 is highly homologous to syntaxin-1a, only epimorphin/syntaxin-2 can stimulate mammary branching morphogenesis. We construct a homology model of epimorphin/syntaxin-2 based on the published structure of syntaxin-1a, and we use this model to identify the structural motif responsible for the morphogenic activity. We identify four residues located within the cleft between helices B and C that differ between syntaxin-1a and epimorphin/syntaxin-2; through site-directed mutagenesis of these four amino acids, we confer the properties of epimorphin for cell adhesion, gene activation, and branching morphogenesis onto the inactive syntaxin-1a template. These results provide a dramatic demonstration of the use of structural information about one molecule to define a functional motif of a second molecule that is related at the sequence level but highly divergent functionally.
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Affiliation(s)
- Connie S Chen
- Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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24
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Watkin H, Richert MM, Lewis A, Terrell K, McManaman JP, Anderson SM. Lactation failure in Src knockout mice is due to impaired secretory activation. BMC DEVELOPMENTAL BIOLOGY 2008; 8:6. [PMID: 18215306 PMCID: PMC2266720 DOI: 10.1186/1471-213x-8-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2007] [Accepted: 01/23/2008] [Indexed: 11/17/2022]
Abstract
Background Mammary gland development culminates in lactation and is orchestrated by numerous stimuli and signaling pathways. The Src family of nonreceptor tyrosine kinases plays a pivotal role in cell signaling. In order to determine if Src plays a role in mammary gland development we have examined mammary gland development and function during pregnancy and lactation in mice in which expression of Src has been eliminated. Results We have characterized a lactation defect in the Src-/- mice which results in the death of over 80% of the litters nursed by Src-/- dams. Mammary gland development during pregnancy appears normal in these mice; however secretory activation does not seem to occur. Serum prolactin levels are normal in Src-/- mice compared to wildtype controls. Expression of the prolactin receptor at both the RNA and protein level was decreased in Src-/- mice following the transition from pregnancy to lactation, as was phosphorylation of STAT5 and expression of milk protein genes. These results suggest that secretory activation, which occurs following parturition, does not occur completely in Src-/- mice. Failed secretory activation results in precocious involution in the mammary glands of Src-/- even when pups were suckling. Involution was accelerated following pup withdrawal perhaps as a result of incomplete secretory activation. In vitro differentiation of mammary epithelial cells from Src-/- mice resulted in diminished production of milk proteins compared to the amount of milk proteins produced by Src+/+ cells, indicating a direct role for Src in regulating the transcription/translation of milk protein genes in mammary epithelial cells. Conclusion Src is an essential signaling modulator in mammary gland development as Src-/- mice exhibit a block in secretory activation that results in lactation failure and precocious involution. Src appears to be required for increased expression of the prolactin receptor and successful downstream signaling, and alveolar cell organization.
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Affiliation(s)
- Harriet Watkin
- Department of Pathology, University of Colorado Health Sciences Center, Research Complex I, South Tower, Mail Stop 8104, 12801 East 17th Avenue, Aurora, CO 80045, USA.
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25
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Liu C, Sarkaria JN, Petell CA, Paraskevakou G, Zollman PJ, Schroeder M, Carlson B, Decker PA, Wu W, James CD, Russell SJ, Galanis E. Combination of Measles Virus Virotherapy and Radiation Therapy Has Synergistic Activity in the Treatment of Glioblastoma Multiforme. Clin Cancer Res 2007; 13:7155-65. [DOI: 10.1158/1078-0432.ccr-07-1306] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Ouyang S, Qiao F, Zhang Q. Relationship between expression of hepatocyte grow factor and apoptosis of trophoblasts in hypertensive disorder complicating pregnancy. FRONTIERS OF MEDICINE IN CHINA 2007; 1:386-389. [PMID: 24573931 DOI: 10.1007/s11684-007-0075-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The aim of this study was to investigate the expression of hepatocyte growth factor (HGF) and Fas in placentas of uncomplicated pregnant women and those with hypertensive disorder complicating pregnancy (HDCP), and elucidate the possible relationship between HGF and apoptosis of trophoblasts. Reverse transcription-polymerase chain reaction (RT-PCR) was undertaken to examine the concentration of HGF mRNA and Fas mRNA obtained from 34 cases of HDCP and 30 cases of uncomplicated pregnancy. The expression of HGF mRNA in mild preeclampsia, severe preeclampsia and eclampsia cases was significantly lower than that in the uncomplicated cases (0.43 ± 0.12, 0.38 ± 0.09, 0.19 ± 0.17 versus 0.67 ± 0.19, P < 0.05), while the expression of Fas mRNA in mild preeclampsia, severe preeclampsia and eclampisa cases was significantly higher than that in the uncomplicated cases (1.58 ± 0.26, 2.96 ± 0.14, 5.98 ± 1.17 versus 1.01 ± 0.36, P < 0.05). For HGF mRNA and Fas mRNA, there was no difference between gestational hypertension cases and control cases. Decreased HGF mRNA or increased Fas mRNA was found along with the progress of HDCP. Negative correlation was found between the expressions of HGF and Fas. These results indicate that HGF inhibits the apoptosis mediated by Fas, and the reduced expression of HGF in HDCP may be responsible for the apoptosis of trophoblasts.
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Affiliation(s)
- Shan Ouyang
- Department of Gynecology and Obstetrics, Central Hospital of Wuhan, Wuhan, 430014, China,
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27
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Jäger R. Targeting the death machinery in mammary epithelial cells: Implications for breast cancer from transgenic and tissue culture experiments. Crit Rev Oncol Hematol 2007; 63:231-40. [PMID: 17604639 DOI: 10.1016/j.critrevonc.2007.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2006] [Revised: 05/08/2007] [Accepted: 05/23/2007] [Indexed: 12/11/2022] Open
Abstract
Apoptosis plays important roles in the development of the mammary gland, and its impairment has been speculated to promote breast cancer. In mammary epithelial cells apoptosis is triggered via the intrinsic pathway which is controlled by interactions between pro- and anti-apoptotic members of the Bcl-2 protein family. The impact of impairing this pathway on the development of breast cancer has been addressed experimentally using transgenic mouse models. Neither overexpression of anti-apoptotic Bcl-2 nor a deficiency of pro-apoptotic Bax were tumorigenic on their own in mammary glands of transgenic mice. Both ways of impairing apoptosis, however, promoted mammary tumorigenesis elicited by c-myc or SV40 T antigen. Likewise, inhibition of the intrinsic pathway in a three-dimensional mammary tissue culture model was insufficient to generate solid aggregates resembling early breast cancer stages but required the concomitant activity of proliferation-stimulating oncogenes. These two experimental approaches have thus substantiated the concept of apoptosis acting as a tumor suppressor mechanism, however point towards a complex picture in which alternative routes to cell death may be involved.
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Affiliation(s)
- Richard Jäger
- Department of Developmental Pathology, Institute for Pathology, Bonn Medical School, Sigmund-Freud-Strasse 25, 53127 Bonn, Germany.
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28
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Zhao Y, Wang W, Qian L. Hsp70 may protect cardiomyocytes from stress-induced injury by inhibiting Fas-mediated apoptosis. Cell Stress Chaperones 2007; 12:83-95. [PMID: 17441510 PMCID: PMC1852896 DOI: 10.1379/csc-231r.1] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Expression of Hsp70 is an endogenous mechanism by which living cells adapt to stress and the protection of Hsp70 may interfere with the apoptotic machinery in a variety of ways. Here, we observed the change of Hsp70 expression in rat myocardium under stress and explored the protective effect of Hsp70 on the Fas-mediated pathway to cardiomyocyte apoptosis. The results showed that restraint stress led to cardiac dysfunction and structural damage of the myocardium, as well as activation of the Fas pathway. A similar increase in the Fas expression level, caspase-8/3 activity, and the apoptotic rate of the cardiomyocyte also were found, which indicated that Fas-mediated apoptosis of cardiomyocytes might be one of the mechanisms of cardiomyocyte injury induced by stress. Changes in Hsp70 levels and distribution occurred during the stress process, which correlated with the severity of myocardium injury. Heat preconditioning induced the upregulation of Hsp70 synthesis, which in turn may have mitigated subsequent restraint stress-induced damage, including electrocardiography (ECG) abnormality, myocardium damage, and cell death. Moreover, Hsp70 overexpression induced by heat preconditioning had no effect on Fas expression in the cardiomyocyte, but could inhibit activation of caspase-8/3 induced by the Fas signaling pathway and, as a result, prevent cell apoptosis. These results suggest that Hsp70 is capable of protecting the cardiomyocyte from stress-induced injury by inhibiting Fas-mediated apoptosis, and Hsp70 could be considered a target in future drugs to prevent cardiovascular injury caused by stress.
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Affiliation(s)
- Yun Zhao
- Institute of Health & Environmental Medicine, Tianjin, China
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29
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Abstract
Mammary gland involution is a highly complex multi-step process in which the lactating gland returns to a morphologically near pre-pregnant state. This developmental stage is characterized by a high degree of epithelial cell death, redevelopment of the mammary adipose tissue and tissue remodelling. Many factors involved have been described and these have been reviewed intensively in this journal (Furth, P. A., J. Mammary Gland Biol. Neoplasia, 4:123-127, 1999) and elsewhere. Microarray analysis technology has now not only allowed us to identify genes not previously associated with involution (Stein, T., Morris, J.S., Davis, C.R.,Weber-Hall, S.J., Duffy, M.A., Heath, V.J., et al., Breast Cancer Res., 6: R75-R91, 2004; Clarkson, R.W., Wayland, M.T., Lee, J., Freeman, T., Watson, C.J., Breast Cancer Res., 6: R92-R109, 2004; Clarkson, R.W., Watson, C.J., J. Mammary Gland Biol. Neoplasia, 8: 309-319, 2003), it has also enabled us to define multiple phases of the controlled regulatory response to forced weaning on the basis of their transcriptional profiles. This review provides a synthesis of published data, integrating the time course of transcriptional activity in the mouse mammary gland with a gene ontology approach to identify the pathways involved.
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Affiliation(s)
- Torsten Stein
- Division of Cancer Sciences and Molecular Pathology, Section of Gene Regulation and Mechanisms of Disease, Western Infirmary, University of Glasgow, Glasgow G11 6NT, UK
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Baxter FO, Neoh K, Tevendale MC. The beginning of the end: death signaling in early involution. J Mammary Gland Biol Neoplasia 2007; 12:3-13. [PMID: 17340185 DOI: 10.1007/s10911-007-9033-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Mammary gland involution occurs in two distinct phases: an early, reversible phase, involving extensive apoptosis of the secretory alveolar epithelium without major changes in gland architecture, and a later, irreversible phase, involving remodelling of the gland to its pre-pregnancy state. Multiple signalling pathways are known to be important during early involution, however the precise triggers remain elusive. This review summarizes the roles of a number of key pathways (NF-kappaB, PI(3)K, Stat3, and TGFbeta) in the first phase of involution.
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Affiliation(s)
- Fiona O Baxter
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK.
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Baxter FO, Came PJ, Abell K, Kedjouar B, Huth M, Rajewsky K, Pasparakis M, Watson CJ. IKKbeta/2 induces TWEAK and apoptosis in mammary epithelial cells. Development 2006; 133:3485-94. [PMID: 16887827 DOI: 10.1242/dev.02502] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The Nuclear Factor-kappaB (NF-kappaB) family of transcription factors are ubiquitously expressed and control a wide range of cellular responses, including apoptosis, proliferation, differentiation, inflammation and immunity. Here, we investigated the function of the NF-kappaB upstream regulator IkappaB kinase 2/beta (IKK2) in apoptosis regulation in the normal physiological setting of regressing mammary gland. Conditional deletion of the gene encoding IKK2 resulted, surprisingly, in delayed apoptosis and remodelling, and abrogation of caspase 3 cleavage. This failure to induce involution was associated with reduced expression, within 24 hours of involution, of the death receptor (DR) ligand TNF and its receptor TNFR1, which are known NF-kappaB targets. This was associated with elevated levels of active AKT and phosphorylated FOXO3a. Furthermore, we show that expression of TWEAK, another DR ligand, is dramatically downregulated, even in heterozygous IKK2 mammary glands. Unlike other DR ligands, the TWEAK promoter has six consensus FOXO-binding sites, further suggesting that it is differentially regulated. Interestingly, a cleaved form of TWEAK is upregulated during involution. This unexpected function of the IKK2/NF-kappaB pathway as a regulator of TWEAK expression and inducer of apoptosis has significant consequences for future therapeutic approaches for cancer and inflammatory diseases.
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Affiliation(s)
- Fiona O Baxter
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QP, UK
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32
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Abstract
It has become clear in recent years that apoptosis is a normal process in trophoblast turnover during pregnancy. Increased trophoblast apoptosis has been observed in the placenta of women with preeclampsia, serum from women with preeclampsia has been found to induce increased trophoblast sensitivity to Fas-mediated apoptosis, and serum from women with preeclampsia has elevated levels of various chemokines, growth factors and cytokines that are involved in the regulation of apoptosis. This review highlights the importance of apoptosis in normal placental development and explores the mechanisms whereby Fas-mediated apoptosis may play a role in conditions related to abnormal placentation, such as preeclampsia.
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Affiliation(s)
- Donna M Neale
- Department of Gynecology and Obstetrics, John Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Abstract
Matrix degradation and tissue remodelling directed by matrix-degrading proteases are activated in physiological situations such as wound healing and involution of the prostate, ovaries and uterus. Recently, other activities, in addition to the cleavage of matrix proteins, have been attributed to matrix proteases including the release of growth factors from the extracellular matrix and roles in the maturation of adipocytes. This review describes extracellular proteases, including MMPs, plasminogen and cathepsins involved in the tissue remodelling processes that occur in the breast during pubertal mammary development and the mammary cycle of pregnancy, lactation and weaning. It particularly focuses on development and weaning, termed mammary gland involution, when the majority of remodelling occurs. It also brings together recent findings on the exciting new functions of matrix-degrading proteases.
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Jaita G, Candolfi M, Zaldivar V, Zárate S, Ferrari L, Pisera D, Castro MG, Seilicovich A. Estrogens up-regulate the Fas/FasL apoptotic pathway in lactotropes. Endocrinology 2005; 146:4737-44. [PMID: 16099864 PMCID: PMC1266288 DOI: 10.1210/en.2005-0279] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The Fas/FasL system provides the major apoptotic mechanism for many cell types, participating in cell turnover in hormone-dependent tissues. In the present study, we localized both Fas and FasL in anterior pituitary cells, mainly in lactotropes and somatotropes. The percentage of anterior pituitary cells showing immunoreactivity for Fas or FasL was higher in cells from rats killed in proestrus than in diestrus. Also, the proportion of pituitary cells from ovariectomized (OVX) rats expressing Fas or FasL increased in the presence of 17beta-estradiol (10(-9) M). This steroid increased the percentage of lactotropes with immunoreactivity for Fas or FasL and the percentage of somatotropes expressing Fas. Activation of Fas by an agonist anti-Fas antibody (Mab-Fas) decreased the vi-ability-3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT assay)-of anterior pituitary cells from OVX rats cultured in the presence of 17beta-estradiol. Also, membrane-bound FasL decreased cell viability-[3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium] assay (MTS assay)-only when anterior pituitary cells from OVX rats were incubated with 17beta-estradiol. Moreover, FasL increased the percentage of hypodiploid anterior pituitary cells (flow cytometry). Mab-Fas increased the percentage of terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL)-positive pituitary cells and lactotropes from OVX rats only when cells were incubated in the presence of 17beta-estradiol. Also, Mab-Fas triggered apoptosis of anterior pituitary cells from rats killed at proestrus but not at diestrus. Our results show that 17beta-estradiol up-regulates the expression of the Fas/FasL system in anterior pituitary cells and increases Fas-induced apoptosis in lactotropes, suggesting that Fas-induced apoptosis could be involved in the pituitary cell renewal during the estrous cycle.
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Affiliation(s)
- G. Jaita
- Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires (C1121ABG), Argentina
| | - M. Candolfi
- Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires (C1121ABG), Argentina
| | - V. Zaldivar
- Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires (C1121ABG), Argentina
| | - S. Zárate
- Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires (C1121ABG), Argentina
| | - L. Ferrari
- Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires (C1121ABG), Argentina
| | - D. Pisera
- Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires (C1121ABG), Argentina
| | - M. G. Castro
- Gene Therapeutics Research Institute, Cedars Sinai Medical Center and David Geffen School of Medicine, UCLA, Los Angeles, California 90048, USA
| | - A. Seilicovich
- Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, Buenos Aires (C1121ABG), Argentina
- Corresponding author and reprint requests: Adriana Seilicovich, Centro de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, piso 10, Buenos Aires (C1121ABG), ARGENTINA, T, TEL/FAX 5411-48074052
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Wechselberger C, Bianco C, Strizzi L, Ebert AD, Kenney N, Sun Y, Salomon DS. Modulation of TGF-β signaling by EGF-CFC proteins. Exp Cell Res 2005; 310:249-55. [PMID: 16137677 DOI: 10.1016/j.yexcr.2005.07.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2005] [Revised: 07/01/2005] [Accepted: 07/01/2005] [Indexed: 11/16/2022]
Abstract
Members of the transforming growth factor-beta (TGF-beta) family of ligands exhibit potent growth-suppressive and/or apoptosis-inducing effects on different types of cells. They perform essential roles in the elimination of damaged or abnormal cells from healthy tissues. On the other hand, TGF-betas have also been shown to act as tumor-promoting cytokines in a number of malignancies that are capable of stimulating extracellular matrix production, cell migration, invasion, angiogenesis, and immune suppression. Dissecting the complex, multifaceted roles of different TGF-beta-related peptides especially during the development of pathological conditions and in carcinogenesis is an area of continuous research and development. The characterization of EGF-CFC proteins as essential co-receptors that contribute to the modulation of the physiological activities of some of the TGF-beta ligands will be beneficial for future medical research and the adaptation and possible readjustment of currently applied therapeutic regimes.
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Affiliation(s)
- Christian Wechselberger
- Upper Austrian Research GmbH, Center for Biomedical Nanotechnology, Scharitzerstrasse 6-8, 4th floor, 4020 Linz, Austria.
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Bogovic Crncic T, Laskarin G, Juretic K, Strbo N, Dupor J, Srsen S, Randic L, Le Bouteiller P, Tabiasco J, Rukavina D. Perforin and Fas/FasL Cytolytic Pathways at the Maternal-Fetal Interface. Am J Reprod Immunol 2005; 54:241-8. [PMID: 16212646 DOI: 10.1111/j.1600-0897.2005.00320.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The immunogenetic enigma of maternal acceptance of the fetal semiallograft has been termed an immunological paradox. The first trimester decidua is heavily infiltrated with CD56(bright) CD16- uterine natural killer (uNK) cells which must be prepared to respond to potential pathogen challenges and still be able to control immune responses that allow the development of the fetus. The significant presence of cytolytic mediators, perforin and Fas/Fas ligand (FasL), at the maternal-fetal interface raises a question of their role(s) in the immunological interrelations between maternal tissues and trophoblast cells. As uNK cells in vitro lyse target cell lines (K562, P815 and P815Fas) using these effector molecules, it seems that, although immunocompetent, their cytotoxicity is not directed against trophoblast during normal pregnancy. Therefore, it is generally believed that the hormonal and Th1/Th2 cytokine balance plays an important role in the tolerance and maintenance of pregnancy. This paper gives an overview of the recent findings on the complex immunological events that occur at the maternal-fetal interface.
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Affiliation(s)
- Tatjana Bogovic Crncic
- Department of Physiology and Immunology, Medical Faculty, University of Rijeka, Rijeka, Croatia
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Mottolese M, Nádasi EA, Botti C, Cianciulli AM, Merola R, Buglioni S, Benevolo M, Giannarelli D, Marandino F, Donnorso RP, Venturo I, Natali PG. Phenotypic changes of p53, HER2, and FAS system in multiple normal tissues surrounding breast cancer. J Cell Physiol 2005; 204:106-12. [PMID: 15622519 DOI: 10.1002/jcp.20275] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
To determine whether phenotypic field changes occur in tissues adjacent to carcinoma, we assayed, by immunohistochemistry, the expression of HER-2, p53, Fas, and FasL in 72 breast cancers (BC) and multiple autologous peritumoral tissues (PTTs) sampled up to 5 cm distance and in 44 benign breast tumors (BBTs). About 5% and 3% of the PTTs and 4.5% and 6.8% of BBTs showed alterations in HER2 and p53 expression, respectively. Of interest, gene amplification was observed in 50% of HER2 positive PTTs, but not in any HER2 positive BBTs. Fas, highly expressed in BBTs and downregulated in BC, maintained its expression in PTTs, whereas FasL, usually negative in BBTs, was upregulated in BC as well as in the PTTs closest (1 cm) to the invasive lesion. Our data suggest that FasL could be a potential novel biomarker of transformation, which may identify, along with HER2 and p53, precursor lesions in a genetically altered breast tissue.
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Song J, Fadiel A, Edusa V, Chen Z, So J, Sakamoto H, Fishman DA, Naftolin F. Estradiol-induced ezrin overexpression in ovarian cancer: a new signaling domain for estrogen. Cancer Lett 2005; 220:57-65. [PMID: 15737688 DOI: 10.1016/j.canlet.2004.04.024] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2003] [Revised: 01/14/2004] [Accepted: 04/03/2004] [Indexed: 11/30/2022]
Abstract
We have for the first time exposed estrogen's role in the epithelial ovarian cancer (OVCA) metastatic cascade and discovered that it is related to the induction of ezrin over-expression. 17beta Estradiol (E2) was administered to SKOV3 (ERalpha>beta) and DOV13 (ERalpha<ERbeta) OVCA cells in serum-and phenol red-free medium fortified with transferrin and insulin. Incubated cells that penetrated Matrigel membranes were counted, immunostained and analyzed for immunoreactive ezrin. E2 induced an invasive phenotype with translocation of ezrin to cell edges, including pseudopodia and ruffles. A strong correlation was found between ezrin expression and Matrigel penetration induced by E2. Increases in cell number and ezrin expression were confirmed by flask incubations. E2 stimulation of OVCA cell proliferation, motility and Matrigel penetration was dose-related and raloxifene or tamoxifen blocked E2's effect, supporting an ER action. This previously unreported effect of estrogen on ezrin expression may play a role in the clinical course of estrogen-sensitive cancers and other normal or diseased cell actions.
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Affiliation(s)
- Joon Song
- Department of Obstetrics and Gynecology, Yale University, P.O. Box 208063, 333 Cedar Street, FMB 331, New Haven, CT 06520-8063, USA
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Linkermann A, Qian J, Lettau M, Kabelitz D, Janssen O. Considering Fas ligand as a target for therapy. Expert Opin Ther Targets 2005; 9:119-34. [PMID: 15757486 DOI: 10.1517/14728222.9.1.119] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
About a decade ago, the death factor Fas ligand (FasL) was identified as the natural trigger of Fas/CD95-dependent apoptosis and as an inducer of Fas-dependent activation-induced cell death. Meanwhile, it is known that this molecule not only contributes to target cell lysis in the immune system but also to the establishment of immune privilege and tumour survival. Because delivering a specific antiproliferative signal to T lymphocytes is of major biomedical interest, the FasL/Fas system has gained much attention over the last few years. However, only recently it became evident that the biology of FasL is more complex than initially anticipated. FasL displays a complex pattern of inducible and constitutive expression associated with a number of different functions as a death factor or a co-stimulatory/accessory molecule in lymphocyte activation. Thus, side effects are likely to occur following systemic administration of, for example, anti-FasL medication, not only because of the constitutive FasL expression on cells within immune privileged tissues and vascular endothelium. In addition, FasL comes in different forms: as a surface molecule, as a protease-shed soluble variant or secreted in vesicles. Because increased levels of soluble FasL (sFasL) have been determined in various immunological and non-immunological diseases, it has been suggested that sFasL might serve as a prognostic or diagnostic marker even though the pathophysiological cause for its enhanced production is hardly known in most cases. This review summarises the current facts and ideas about the clinical and pharmacological potential of FasL and sFasL as targets for therapeutic interventions.
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Affiliation(s)
- Andreas Linkermann
- Medical Center Schleswig-Holstein Campus Kiel, Institute of Immunology, Michaelisstr. 5, D-24105 Kiel, Germany
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Cui XS, Jeong YJ, Jun JH, Kim NH. Insulin-like growth factor-I alters apoptosis related genes and reduces apoptosis in porcine parthenotes developing in vitro. Theriogenology 2005; 63:1070-80. [PMID: 15710194 DOI: 10.1016/j.theriogenology.2004.05.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2004] [Revised: 05/24/2004] [Accepted: 05/24/2004] [Indexed: 11/16/2022]
Abstract
The aim of this study was to determine the effects of IGF-I on the viability and development of porcine presumptive diploid parthenotes developing in vitro. In vitro derived 2-cell parthenotes were cultured to blastocysts with or without exogenous IGF-I in the presence or absence of BSA. The addition of 10 or 100 ng/ml IGF-I into NCSU 23 medium did not enhance the development of 2-cell parthenotes to the blastocyst stage. However, IGF-I increased cell numbers (P < 0.001) in the presence of BSA. Similarly, IGF-I alone did not affect apoptosis in the blastocysts but when combined with BSA, it reduced apoptosis (P < 0.05). Real time reverse-transcription polymerase chain reaction revealed that IGF-I significantly decreased the mRNA expression (pro-apoptotic gene Fas or Bak and anti-apoptotic gene Bcl-xL) ratios of both Fas/Bcl-xL (P < 0.01) and Bak/Bcl-xL (P < 0.01) in the presence of 0.4% BSA. These data suggest that IGF-I synergies with BSA to act as a mitogen and apoptotic survival factor in porcine preimplantation parthenotes.
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Affiliation(s)
- Xiang-Shun Cui
- Department of Animal Sciences, Chungbuk National University, Gaesin-dong, Cheongju, Chungbuk, 361-763, South Korea
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Jochum F, Loui A, Weber A, Felderhoff-Mueser U, Bührer C, Dudenhausen JW, Obladen M. Low soluble Fas (sFas) and sFas ligand (sFasL) content in breast milk after preterm as opposed to term delivery. Acta Paediatr 2005; 94:143-6. [PMID: 15981745 DOI: 10.1111/j.1651-2227.2005.tb01881.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM Various mechanisms of innate immunity and gastrointestinal integrity are potentially affected by soluble Fas (sFas) and sFas ligand (sFasL). Assuming that sFas and sFasL in milk reflect cellular events during lactogenesis, we aimed to assess the impact of premature parturition and duration of lactation on the concentrations of sFas and sFasL in human milk. PATIENTS AND METHODS The content of the soluble form of the cell surface receptor Fas (sFas) and its natural ligand (sFasL) was measured in human breast milk of 44 healthy mothers after preterm (<35 wk, n=21) and term (>37 wk, n=23) delivery. Milk was furthermore classified as immature breast milk (days 4-7 of lactation) or mature breast milk (days 35-45 of lactation). Breast milk (2-3 ml) was sampled 5 min after the start of breastfeeding by manual expression or milk pump, and stored at -20 degrees C until analysis by an ELISA. RESULTS sFas and sFasL concentrations were lower in immature milk after preterm compared to term delivery (sFas: 1.71; 1.38-2.47 ng/ml vs 3.03; 2.02-4.30 ng/ml, p < 0.001; sFasL: 0.13; 0.07-0.21 ng/ml vs 0.29; 0.15-0.60 ng/ml, p < 0.001 [median +/- interquartile range]). Mature milk samples, taken 1 mo later from both gestational groups, did not differ in sFas/sFasL content. Soluble Fas was positively correlated with sFasL in the same sample of immature (p < 0.001) and mature human milk (p < 0.05). A positive correlation was found between sFas and sFasL in immature and mature milk samples of the same mother (p < 0.01). The body mass index of the mothers and duration of pregnancy were positively correlated with the sFas and sFasL content in immature milk (p < 0.05 and p < 0.01, respectively) but not in mature milk. CONCLUSION Preterm newborn infants fed with breast milk have a lower intake of sFas and sFasL compared to term neonates. Our results demonstrate that preterm delivery affects breast milk composition.
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Affiliation(s)
- F Jochum
- Department of Neonatology, Virchow Hospital, Charité, Berlin, Germany.
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Abstract
Polyamines, namely putrescine, spermidine, and spermine, are biogenic low-molecular-weight aliphatic amines which play essential roles in cell growth and proliferation. The aim of this study was to determine the effects of polyamines on the viability and development of porcine diploid parthenotes developing in vitro. The addition of 0.1 or 1.0 microM of putrescine, spermidine, or spermine, individually, to the culture medium did not enhance the development of 2-cell parthenotes to the blastocyst stage and did not change the total number of nuclei in the blastocysts. However, combined addition of these three compounds increased developmental rate to blastocyst and total cell numbers. Apoptosis in blastocyst stage parthenotes was decreased in the presence of exogenous polyamines. Real time PCR revealed that addition of polyamines to the culture media decreased the ratio of mRNA expression of Bak/Bcl-xL, Fas/Bcl-xL, and caspase 3, and enhanced mRNA expression of ornithine decarboxylase (ODC) and spermidine synthase, enzymes of polyamine biosynthesis. In the presence of L-alpha-difluoromethyl ornithine (an inhibitor of ODC) or cyclohexylamine (an inhibitor of spermidine synthase) development of porcine parthenotes decreased, apoptosis increased, and mRNA expression of the ratio of Bak/Bcl-xL and Fas/Bcl-xL, and caspase 3 increased. These results suggest that exogenous polyamines in the culture medium prevent apoptosis of porcine parthenotes and results in the net enhancement of porcine embryo viability.
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Affiliation(s)
- Xiang-Shun Cui
- Department of Animal Sciences, Chungbuk National University, Gaesin-dong, Chungju, Chungbuk, South Korea
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Flick MB, O'Malley D, Rutherford T, Rodov S, Kamsteeg M, Hao XY, Schwartz P, Kacinski BM, Mor G. Apoptosis-based evaluation of chemosensitivity in ovarian cancer patients. ACTA ACUST UNITED AC 2004; 11:252-9. [PMID: 15120700 DOI: 10.1016/j.jsgi.2003.11.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Induction of apoptosis in target cells is a key mechanism by which chemotherapy induces cell killing. We have established an in vitro system for determining the chemosensitivity of epithelial ovarian cancer cells to carboplatin and paclitaxel (Taxol). Practical assays to predict the likelihood of individual tumor sensitivity are needed to facilitate the choice of adequate treatment. We sought to determine whether epithelial ovarian cancer cells (EOC) collected from the ascites fluid of patients known to be clinically chemosensitive or chemoresistant to carboplatin and paclitaxel would show a similar response to chemotherapeutic drugs after in vitro treatment. METHODS Thirteen patients with stage III and IV ovarian cancer treated with carboplatin and paclitaxel were studied. Caspase-3 activation was used as a surrogate marker for activation of chemotherapy-induced programmed cell death. We compared the in vitro apoptotic response to the clinical response of the patients from whom the tumor cells were isolated. Clinical sensitivity was defined as no evidence of disease recurrence for 6 months after optimal debulking surgery and completion of chemotherapy. RESULTS Of seven chemosensitive patients, five cell samples treated in vitro had increased caspase-3 activity in response to both carboplatin and paclitaxel. Five of six chemoresistant cases did not show caspase-3 activity in response to only one or to neither agent. CONCLUSION Quantifiable markers of apoptosis such as caspase-3 activation have the potential to predict the clinical response to chemotherapy. Application of this assay in clinical laboratories could optimize the potential for efficient treatment and avoid the toxicities of ineffective drugs.
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Affiliation(s)
- Maryann B Flick
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA
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de la Cruz L, Steffgen K, Martin A, McGee C, Hathaway H. Apoptosis and involution in the mammary gland are altered in mice lacking a novel receptor, beta1,4-Galactosyltransferase I. Dev Biol 2004; 272:286-309. [PMID: 15282149 DOI: 10.1016/j.ydbio.2004.03.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2003] [Revised: 03/22/2004] [Accepted: 03/25/2004] [Indexed: 01/26/2023]
Abstract
Receptor-mediated cell-extracellular matrix (ECM) interactions are critical regulators of cell survival, and perturbing these signaling pathways can disrupt cellular differentiation and function in a variety of tissues, including the mammary gland. One such receptor is the cell surface-associated, long isoform of beta1,4-galactosyltransferase I (GalT I). Deletion of long GalT I leads to increased mammary ductal branching morphogenesis [Dev. Biol., 244 (2002) 114]. Here, we show that this expansion in the mammary epithelial (ME) cell compartment is accomplished through decreased apoptosis during pregnancy and involution. Decreased apoptosis during involution is concomitant with delayed alveolar collapse, persistent expression of the milk protein gene alpha-lactalbumin and delayed expression of genes associated with the tissue-remodeling phase of involution. Using 3-dimensional in vitro cultures, we show that the decrease in apoptosis is dependent on laminin 1, a ligand for surface GalT I, suggesting that surface GalT I negatively influences ECM-dependent cell survival, a novel function for an ECM receptor. In the best-studied examples, ECM promotes survival through integrin receptor-mediated activation of focal adhesion kinase (FAK). Aggregation of surface GalT I also activates FAK, therefore, we asked if FAK activation was altered in ME from long GalT I null mice. Activated FAK was appropriately localized to focal adhesions in long GalT I null ME. However, FAK activation was constitutively reduced 4.5-fold in long GalT I nulls relative to wild type. Expression of the integrin beta1 subunit was not affected by loss of long GalT I. Collectively, these results suggest that surface GalT I might negatively regulate ME cell survival by linking integrin-independent FAK activation to apoptotic rather than survival signaling events.
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Affiliation(s)
- Laura de la Cruz
- Department of Cell Biology and Physiology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
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45
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Gajewska M, Motyl T. IGF-binding proteins mediate TGF-beta 1-induced apoptosis in bovine mammary epithelial BME-UV1 cells. Comp Biochem Physiol C Toxicol Pharmacol 2004; 139:65-75. [PMID: 15556067 DOI: 10.1016/j.cca.2004.09.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2004] [Revised: 09/07/2004] [Accepted: 09/09/2004] [Indexed: 11/25/2022]
Abstract
TGF-beta 1 is an antiproliferative and apoptogenic factor for mammary epithelial cells (MEC) acting in an auto/paracrine manner and thus considered an important local regulator of mammary tissue involution. However, the apoptogenic signaling pathway induced by this cytokine in bovine MEC remains obscure. The present study was focused on identification of molecules involved in apoptogenic signaling of transforming growth factor-beta 1 (TGF-beta 1) in the model of bovine mammary epithelial cell line (BME-UV1). Laser scanning cytometry (LSC), Western blot and electrophoretic mobility shift assay (EMSA) were used for analysis of expression and activity of TGF-beta 1-related signaling molecules. The earliest response occurring within 1-2 h after TGF-beta 1 administration was an induction and activation of R-Smads (Smad2 and Smad3) and Co-Smad (Smad4). An evident formation of Smad-DNA complexes began from 2nd hour after MEC exposure to TGF-beta 1. Similarly to Smads, proteins of AP1 complex: phosphorylated c-Jun and JunD appeared to be early reactive molecules; however, an increase in their expression was detected only in cytosolic fraction. In the next step, an increase of IGF binding protein-3 (IGFBP-3) and IGFBP-4 expression was observed from 6th hour followed by a decrease in the activity of protein kinase B (PKB/Akt), which occurred after 24 h of MEC exposure to TGF-beta 1. The decrease in PKB/Akt activity coincided in time with the decline of phosphorylated Bad expression (inactive form). Present study supported additional evidence that stimulation of insulin-like growth factor I (IGF-I) was associated with complete abrogation of TGF-beta 1-induced activation of Bad and Bax and in the consequence protection against apoptosis. In conclusion, apoptotic effect of TGF-beta 1 in bovine MEC is mediated by IGFBPs and occurs through IGF-I sequestration, resulting in inhibition of PKB/Akt-dependent survival pathway.
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Affiliation(s)
- Małgorzata Gajewska
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw Agricultural University, Nowoursynowska 159, 02-776 Warsaw, Poland
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Green KA, Streuli CH. Apoptosis regulation in the mammary gland. Cell Mol Life Sci 2004; 61:1867-83. [PMID: 15289930 PMCID: PMC11138609 DOI: 10.1007/s00018-004-3366-y] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2003] [Revised: 02/13/2004] [Accepted: 03/03/2004] [Indexed: 12/17/2022]
Abstract
Epithelial apoptosis has a key role in the development and function of the mammary gland. It is involved with the formation of ducts during puberty and is required to remove excess epithelial cells after lactation so that the gland can be prepared for future pregnancies. Deregulated apoptosis contributes to malignant progression in the genesis of breast cancer. Since epithelial cell apoptosis in the lactating mammary gland can be synchronised by forced weaning, it has been possible to undertake biochemical analysis of the pathways involved. Together with the targeted overexpression or deletion of candidate genes, these approaches have provided a unique insight into the complex mechanisms of apoptosis regulation in vivo. This review explores what is currently known about the triggers for apoptosis in the normal mammary gland, and how they link with the intrinsic apoptotic machinery.
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Affiliation(s)
- K. A. Green
- School of Biological Sciences, University of Manchester, Stopford Building, Oxford Road, M13 9PT Manchester, UK
| | - C. H. Streuli
- School of Biological Sciences, University of Manchester, Stopford Building, Oxford Road, M13 9PT Manchester, UK
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Abrahams VM, Kamsteeg M, Mor G. The Fas/Fas ligand system and cancer: immune privilege and apoptosis. Mol Biotechnol 2004; 25:19-30. [PMID: 13679631 DOI: 10.1385/mb:25:1:19] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The Fas/FasL system has been suggested to play an important role in the establishment of immune privilege status for tumors by inducing Fas-mediated apoptosis in tumor-specific lymphocytes. However, the role of cell-surface expressed FasL in tumor cell protection has recently become controversial. Our laboratory has focused on the study of the role of the Fas/FasL system in the normal tissue remodeling of the female reproductive tract and in immune-privileged organs. Our studies have demonstrated a connection between sex hormones and the regulation of the Fas/FasL pathway in immune and reproductive cells. More recently, we have investigated the resistance of tumor cells to Fas-mediated apoptosis. We have also characterized a new form of FasL, different from the classical membranal form, which is secreted by ovarian cancer cells. In this review we describe the main techniques used in these studies.
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Affiliation(s)
- Vikki M Abrahams
- Department of Obstetrics and Gynecology, Yale University, School of Medicine, New Haven, CT 06520, USA
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Green KA, Naylor MJ, Lowe ET, Wang P, Marshman E, Streuli CH. Caspase-mediated Cleavage of Insulin Receptor Substrate. J Biol Chem 2004; 279:25149-56. [PMID: 15069074 DOI: 10.1074/jbc.m402395200] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Apoptosis is an important mechanism for maintaining tissue homeostasis. The efficient induction and execution of apoptosis are essential for cell clearance in specific developmental situations. Insulin-like growth factor (IGF)-I is a survival factor for epithelial cells in the mammary gland, and its withdrawal or inhibition leads to apoptosis. In this paper we describe a novel mechanism that may lead to suppression of an IGF-I-mediated signaling pathway through cleavage of insulin receptor substrate (IRS). During the process of forced weaning, when mammary epithelial cells rapidly enter apoptosis in vivo, IRS-1 and IRS-2 disappear. We have used cultured mammary epithelial cells to demonstrate that IRS removal can be mediated through the action of caspase 10. Caspase 10 activation and IRS-1 cleavage are regulated by a MKK1-signaling pathway but not by a phosphatidylinositol-3 kinase pathway nor by the extracellular proapoptotic ligands FasL, tumor necrosis factor-alpha-related apoptosis-inducing ligand (TRAIL), or transforming growth factor-beta3. In addition we show that the loss of IRS-1 after MKK1 inhibition prevents IGF-mediated phosphorylation of FKHRL1.
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Affiliation(s)
- Kirsty A Green
- School of Biological Sciences, University of Manchester, Smith Building, Oxford Road, Manchester M13 9PT, United Kingdom
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Lareef MH, Tahin Q, Song J, Russo IH, Mihaila D, Slater CM, Balsara B, Testa JR, Broccoli D, Grobelny JV, Mor G, Cuthbert A, Russo J. Chromosome 17p13.2 transfer reverts transformation phenotypes and fas-mediated apoptosis in breast epithelial cells. Mol Carcinog 2004; 39:234-46. [PMID: 15057875 DOI: 10.1002/mc.20014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Transformation of the human breast epithelial cells (HBEC) MCF-10F with the carcinogen benz(a)pyrene (BP) into BP1-E cells resulted in the loss of the chromosome 17 p13.2 locus (D17S796 marker) and formation of colonies in agar-methocel (colony efficiency (CE)), loss of ductulogenic capacity in collagen matrix, and resistance to anti-Fas monoclonal antibody (Mab)-induced apoptosis. For testing the role of that specific region of chromosome 17 in the expression of transformation phenotypes, we transferred chromosome 17 from mouse fibroblast donors to BP1-E cells. Chromosome 11 was used as negative control. After G418 selection, nine clones each were randomly selected from BP1-E-11neo and BP1-E-17neo hybrids, respectively, and tested for the presence of the donor chromosomes by fluorescent in situ hybridization and polymerase chain reaction-based restriction fragment length polymorphism (PCR-RFLP) analyses. Sensitivity to Fas Mab-induced apoptosis and evaluation of transformation phenotype expression were tested in MCF-10F, BP1-E, and nine BP1-E-11neo and BP1-E-17neo clones each. Six BP1-E-17neo clones exhibited a reversion of transformation phenotypes and a dose dependent sensitivity to Fas Mab-induced apoptosis, behaving similarly to MCF-10F cells. All BP1-E-11neo, and three BP1-E-17neo cell clones, like BP1-E cells, retained a high CE, loss of ductulogenic capacity, and were resistant to all Fas Mab doses tested. Genomic analysis revealed that those six BP1-E-17neo clones that were Fas-sensitive and reverted their transformed phenotypes had retained the 17p13.2 (D17S796 marker) region, whereas it was absent in all resistant clones, indicating that the expression of transformation phenotypes and the sensitivity of the cells to Fas-mediated apoptosis were under the control of genes located in this region.
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Affiliation(s)
- Mohamed H Lareef
- Breast Cancer Research Laboratory, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA
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Clarkson RWE, Wayland MT, Lee J, Freeman T, Watson CJ. Gene expression profiling of mammary gland development reveals putative roles for death receptors and immune mediators in post-lactational regression. Breast Cancer Res 2003; 6:R92-109. [PMID: 14979921 PMCID: PMC400653 DOI: 10.1186/bcr754] [Citation(s) in RCA: 257] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2003] [Revised: 11/15/2003] [Accepted: 11/21/2003] [Indexed: 01/22/2023] Open
Abstract
INTRODUCTION In order to gain a better understanding of the molecular processes that underlie apoptosis and tissue regression in mammary gland, we undertook a large-scale analysis of transcriptional changes during the mouse mammary pregnancy cycle, with emphasis on the transition from lactation to involution. METHOD Affymetrix microarrays, representing 8618 genes, were used to compare mammary tissue from 12 time points (one virgin, three gestation, three lactation and five involution stages). Six animals were used for each time point. Common patterns of gene expression across all time points were identified and related to biological function. RESULTS The majority of significantly induced genes in involution were also differentially regulated at earlier stages in the pregnancy cycle. This included a marked increase in inflammatory mediators during involution and at parturition, which correlated with leukaemia inhibitory factor-Stat3 (signal transducer and activator of signalling-3) signalling. Before involution, expected increases in cell proliferation, biosynthesis and metabolism-related genes were observed. During involution, the first 24 hours after weaning was characterized by a transient increase in expression of components of the death receptor pathways of apoptosis, inflammatory cytokines and acute phase response genes. After 24 hours, regulators of intrinsic apoptosis were induced in conjunction with markers of phagocyte activity, matrix proteases, suppressors of neutrophils and soluble components of specific and innate immunity. CONCLUSION We provide a resource of mouse mammary gene expression data for download or online analysis. Here we highlight the sequential induction of distinct apoptosis pathways in involution and the stimulation of immunomodulatory signals, which probably suppress the potentially damaging effects of a cellular inflammatory response while maintaining an appropriate antimicrobial and phagocytic environment.
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