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Kurosaki S, Nakagawa H, Hayata Y, Kawamura S, Matsushita Y, Yamada T, Uchino K, Hayakawa Y, Suzuki N, Hata M, Tsuboi M, Kinoshita H, Tanaka Y, Nakatsuka T, Hirata Y, Tateishi K, Koike K. Cell fate analysis of zone 3 hepatocytes in liver injury and tumorigenesis. JHEP Rep 2021; 3:100315. [PMID: 34345813 PMCID: PMC8319533 DOI: 10.1016/j.jhepr.2021.100315] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 05/04/2021] [Accepted: 05/07/2021] [Indexed: 12/13/2022] Open
Abstract
Background & Aims Liver lobules are typically subdivided into 3 metabolic zones: zones 1, 2, and 3. However, the contribution of zonal differences in hepatocytes to liver regeneration, as well as to carcinogenic susceptibility, remains unclear. Methods We developed a new method for sustained genetic labelling of zone 3 hepatocytes and performed fate tracing to monitor these cells in multiple mouse liver tumour models. Results We first examined changes in the zonal distribution of the Wnt target gene Axin2 over time using Axin2-CreERT2;Rosa26-Lox-Stop-Lox-tdTomato mice (Axin2;tdTomato). We found that following tamoxifen administration at 3 weeks of age, approximately one-third of total hepatocytes that correspond to zone 3 were labelled in Axin2;tdTomato mice; the tdTomato+ cell distribution closely matched that of the zone 3 marker CYP2E1. Cell fate analysis revealed that zone 3 hepatocytes maintained their own lineage but rarely proliferated beyond their liver zonation during homoeostasis; this indicated that our protocol enabled persistent genetic labelling of zone 3 hepatocytes. Using this system, we found that zone 3 hepatocytes generally had high neoplastic potential, which was promoted by constitutive activation of Wnt/β-catenin signalling in the pericentral area. However, the frequency of zone 3 hepatocyte-derived tumours varied depending on the regeneration pattern of the liver parenchyma in response to liver injury. Notably, Axin2-expressing hepatocytes undergoing chronic liver injury significantly contributed to liver regeneration and possessed high neoplastic potential. Additionally, we revealed that the metabolic phenotypes of liver tumours were acquired during tumorigenesis, irrespective of their spatial origin. Conclusions Hepatocytes receiving Wnt/β-catenin signalling from their microenvironment have high neoplastic potential, and Wnt/β-catenin signalling is a potential drug target for the prevention of hepatocellular carcinoma. Lay summary Lineage tracing revealed that zone 3 hepatocytes residing in the pericentral niche have high neoplastic potential. Under chronic liver injury, hepatocytes receiving Wnt/β-catenin signalling broadly exist across all hepatic zones and significantly contribute to liver tumorigenesis as well as liver regeneration. Wnt/β-catenin signalling is a potential drug target for the prevention of hepatocellular carcinoma. We developed a new method for sustained genetic labelling of Zone 3 hepatocytes. Lineage tracing revealed that Zone 3 hepatocytes generally have high neoplastic potential. The frequency of Zone 3 hepatocyte-derived tumours varied depending on the regeneration pattern of liver parenchyma. Under chronic liver injury, hepatocytes receiving Wnt/β-catenin signalling significantly contributed to tumorigenesis. Wnt/β-catenin signalling is a potential drug target for the prevention of HCC.
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Key Words
- CDAHFD, choline-deficient l-amino acid-defined, high-fat diet
- CPS1, carbamoyl phosphate synthetase 1
- CYP2E1, cytochrome P450 subfamily 2E1
- DEN, diethylnitrosamine
- GS, glutamine synthetase
- HAL, histidine ammonia lyase
- HCC, hepatocellular carcinoma
- HFD, high-fat diet
- Hepatocellular carcinoma
- IF, immunofluorescence
- ISH, in situ hybridisation
- Liver regeneration
- MAFLD, metabolic dysfunction-associated fatty liver disease
- MUP, major urinary protein
- Metabolic dysfunction-associated fatty liver disease
- Metabolic zonation
- ND, normal diet
- PIK3CATg, hepatocyte-specific transgenic mice harbouring mutant PIK3CA variant
- PP, periportal
- PV, perivenous
- RFP, red fluorescent protein
- TAM, tamoxifen
- TUNEL, terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labelling
- WT, wild-type
- Wnt/β-catenin signal
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Affiliation(s)
| | - Hayato Nakagawa
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Yuki Hayata
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Satoshi Kawamura
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Yuki Matsushita
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Tomoharu Yamada
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Koji Uchino
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Yoku Hayakawa
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Nobumi Suzuki
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Masahiro Hata
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Mayo Tsuboi
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Hiroto Kinoshita
- Division of Gastroenterology, Institute for Adult Diseases, Asahi Life Foundation, Tokyo, Japan
| | - Yasuo Tanaka
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Takuma Nakatsuka
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Yoshihiro Hirata
- Division of Advanced Genome Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Keisuke Tateishi
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Kazuhiko Koike
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
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Ibrahim AB, Zaki HF, Ibrahim WW, Omran MM, Shouman SA. Evaluation of tamoxifen and simvastatin as the combination therapy for the treatment of hormonal dependent breast cancer cells. Toxicol Rep 2019; 6:1114-1126. [PMID: 31788433 PMCID: PMC6880098 DOI: 10.1016/j.toxrep.2019.10.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 09/27/2019] [Accepted: 10/15/2019] [Indexed: 12/26/2022] Open
Abstract
Tamoxifen (TAM) is a nonsteroidal antiestrogen drug, used in the prevention and treatment of all stages of hormone-responsive breast cancer. Simvastatin (SIM), a lipid-lowering agent, has been shown to inhibit cancer cell growth. The study aimed at investigating the impact of using SIM with TAM in estrogen receptor-positive (ER+) breast cancer cell line, T47D, as well as in mice-bearing Ehrlich solid tumor. The cell line was treated with different concentrations of TAM or/and SIM for 72 h. The effects of treatment on cytotoxicity, oxidative stress markers, apoptosis, angiogenesis, and metastasis were investigated. Our results showed that the combination treatment decreased the oxidative stress markers, glucose uptake, VEGF, and MMP 2 &9 in the cell line compared to TAM- treated cells. Drug interaction of TAM and SIM was synergistic in T47D by increasing the apoptotic makers Bax/BCL-2 ratio and caspase 3 activity. Additionally, in vivo, the combination regimen resulted in a non-significant decrease in the tumor volume compared to TAM treated group. Moreover, the combined treatment decreased the protein expression of TNF-α, NF-kB compared to control. In conclusion, our results suggest that SIM may serve as a promising treatment with TAM for improving the efficacy against estrogen receptor-positive (ER+) breast cancer.
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Key Words
- Apoptosis
- Bax/Bcl-2, ratio Bcl-2-AssociatedXprotein/B-cell lymphoma 2 ratio
- Cytotoxicity
- EAC, ehrlich ascites carcinoma
- ER+, estrogen receptor-positive
- GSH, glutathione
- MDA, malondialdehyde
- MMP, 2&9 metalloproteinases-2and9
- NF-KB, nuclear factor kappa-B
- NOx, nitric oxide
- Oxidative stress
- SIM, simvastatin
- SOD, superoxide dismutase
- Simvastatin
- TAM, tamoxifen
- TNF-α, tumor necrosis factor α
- Tamoxifen
- VEGF, vascular endothelial growth factor
- Vascular endothelial growth factor
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Affiliation(s)
- Amel B. Ibrahim
- Department of Pharmacology, Faculty of Medicine, Zawia University, Libya
| | - Hala F. Zaki
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt
| | - Walaa W. Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt
| | - Mervat M. Omran
- Department of Cancer Biology Department, Pharmacology Unit, National Cancer Institute, Cairo University, Egypt
- Corresponding author.
| | - Samia A. Shouman
- Department of Cancer Biology Department, Pharmacology Unit, National Cancer Institute, Cairo University, Egypt
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Umbarkar P, Singh AP, Gupte M, Verma VK, Galindo CL, Guo Y, Zhang Q, McNamara JW, Force T, Lal H. Cardiomyocyte SMAD4-Dependent TGF-β Signaling is Essential to Maintain Adult Heart Homeostasis. ACTA ACUST UNITED AC 2019; 4:41-53. [PMID: 30847418 PMCID: PMC6390466 DOI: 10.1016/j.jacbts.2018.10.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 08/10/2018] [Accepted: 08/10/2018] [Indexed: 12/25/2022]
Abstract
SMAD4 is the central intracellular mediator of TGF-β pathway. CM-specific loss of SMAD4 causes cardiac dysfunction independent of fibrotic remodeling. Deletion CM-SMAD4 affects CM survival. CM-SMAD4 loss leads to down-regulation of several ion channels’ genes, resulting in cardiac conduction abnormalities. CM-SMAD4 deletion alters sarcomere shortening kinetics, in parallel with reduction in cardiac myosin-binding protein C levels. These results demonstrate a fundamental role for CM-SMAD4–dependent TGF-β signaling in adult heart homeostasis.
The role of the transforming growth factor (TGF)-β pathway in myocardial fibrosis is well recognized. However, the precise role of this signaling axis in cardiomyocyte (CM) biology is not defined. In TGF-β signaling, SMAD4 acts as the central intracellular mediator. To investigate the role of TGF-β signaling in CM biology, the authors deleted SMAD4 in adult mouse CMs. We demonstrate that CM-SMAD4–dependent TGF-β signaling is critical for maintaining cardiac function, sarcomere kinetics, ion-channel gene expression, and cardiomyocyte survival. Thus, our findings raise a significant concern regarding the therapeutic approaches that rely on systemic inhibition of the TGF-β pathway for the management of myocardial fibrosis.
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Key Words
- CM, cardiomyocyte
- CSA, cross-sectional area
- CTL, control
- DCM, dilated cardiomyopathy
- KO, knockout
- LV, left ventricle/ventricular
- MAPK, mitogen-activated protein kinase
- MCM, MerCreMer
- PI3K, phosphoinositide-3 kinase
- RNA-Seq, RNA sequencing
- SMAD4
- TAK1, transforming growth factor beta–activated kinase 1
- TAM, tamoxifen
- TGF, transforming growth factor
- TGF-β
- cMyBP-C, cardiac myosin-binding protein C
- cardiomyocyte
- cardiomyopathy
- fibrosis
- heart failure
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Affiliation(s)
- Prachi Umbarkar
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Anand P Singh
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Manisha Gupte
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Vipin K Verma
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Cristi L Galindo
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yuanjun Guo
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Department of Pharmacology, Vanderbilt University, Nashville, Tennessee
| | - Qinkun Zhang
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - James W McNamara
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, Heart, Lung and Vascular Institute, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Thomas Force
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Hind Lal
- Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
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Barron L, Sun RC, Aladegbami B, Erwin CR, Warner BW, Guo J. Intestinal Epithelial-Specific mTORC1 Activation Enhances Intestinal Adaptation After Small Bowel Resection. Cell Mol Gastroenterol Hepatol 2016; 3:231-244. [PMID: 28275690 PMCID: PMC5331783 DOI: 10.1016/j.jcmgh.2016.10.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 10/18/2016] [Indexed: 01/21/2023]
Abstract
BACKGROUND & AIMS Intestinal adaptation is a compensatory response to the massive loss of small intestine after surgical resection. We investigated the role of intestinal epithelial cell-specific mammalian target of rapamycin complex 1 (i-mTORC1) in intestinal adaptation after massive small bowel resection (SBR). METHODS We performed 50% proximal SBR on mice to study adaptation. To manipulate i-mTORC1 activity, Villin-CreER transgenic mice were crossed with tuberous sclerosis complex (TSC)1flox/flox or Raptorflox/flox mice to inducibly activate or inactivate i-mTORC1 activity with tamoxifen. Western blot was used to confirm the activity of mTORC1. Crypt depth and villus height were measured to score adaptation. Immunohistochemistry was used to investigate differentiation and rates of crypt proliferation. RESULTS After SBR, mice treated with systemic rapamycin showed diminished structural adaptation, blunted crypt cell proliferation, and significant body weight loss. Activating i-mTORC1 via TSC1 deletion induced larger hyperproliferative crypts and disorganized Paneth cells without a significant change in villus height. After SBR, ablating TSC1 in intestinal epithelium induced a robust villus growth with much stronger crypt cell proliferation, but similar body weight recovery. Acute inactivation of i-mTORC1 through deletion of Raptor did not change crypt cell proliferation or mucosa structure, but significantly reduced lysozyme/matrix metalloproteinase-7-positive Paneth cell and goblet cell numbers, with increased enteroendocrine cells. Surprisingly, ablation of intestinal epithelial cell-specific Raptor after SBR did not affect adaptation or crypt proliferation, but dramatically reduced body weight recovery after surgery. CONCLUSIONS Systemic, but not intestinal-specific, mTORC1 is important for normal adaptation responses to SBR. Although not required, forced enterocyte mTORC1 signaling after resection causes an enhanced adaptive response.
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Key Words
- Differentiation
- EGF, epidermal growth factor
- IHC, immunohistochemistry
- MMP, matrix metalloproteinase
- PCR, polymerase chain reaction
- Raptor
- S6K, S6 kinase
- SBR, small bowel resection
- TAM, tamoxifen
- TSC, tuberous sclerosis complex
- TSC1
- WT, wild type
- i-TSC-/-, intestinal epithelial cell–specific tuberous sclerosis complex 1 null mice
- mTOR, mammalian target of rapamycin
- mTORC, mammalian target of rapamycin complex
- p-HH3, phosphorylated histone H3
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Affiliation(s)
| | | | | | | | | | - Jun Guo
- Correspondence Address correspondence to: Jun Guo, PhD, BJC Institute of Health Room 7118, 425 South Euclid Avenue, St. Louis, Missouri 63110. fax: (314) 747–0610.BJC Institute of Health Room 7118425 South Euclid AvenueSt. LouisMissouri 63110
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Crawley CD, Kang S, Bernal GM, Wahlstrom JS, Voce DJ, Cahill KE, Garofalo A, Raleigh DR, Weichselbaum RR, Yamini B. S-phase-dependent p50/NF-кB1 phosphorylation in response to ATR and replication stress acts to maintain genomic stability. Cell Cycle 2015; 14:566-76. [PMID: 25590437 DOI: 10.4161/15384101.2014.991166] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The apical damage kinase, ATR, is activated by replication stress (RS) both in response to DNA damage and during normal S-phase. Loss of function studies indicates that ATR acts to stabilize replication forks, block cell cycle progression and promote replication restart. Although checkpoint failure and replication fork collapse can result in cell death, no direct cytotoxic pathway downstream of ATR has previously been described. Here, we show that ATR directly reduces survival by inducing phosphorylation of the p50 (NF-κB1, p105) subunit of NF-кB and moreover, that this response is necessary for genome maintenance independent of checkpoint activity. Cell free and in vivo studies demonstrate that RS induces phosphorylation of p50 in an ATR-dependent but DNA damage-independent manner that acts to modulate NF-кB activity without affecting p50/p65 nuclear translocation. This response, evident in human and murine cells, occurs not only in response to exogenous RS but also during the unperturbed S-phase. Functionally, the p50 response results in inhibition of anti-apoptotic gene expression that acts to sensitize cells to DNA strand breaks independent of damage repair. Ultimately, loss of this pathway causes genomic instability due to the accumulation of chromosomal breaks. Together, the data indicate that during S-phase ATR acts via p50 to ensure that cells with elevated levels of replication-associated DNA damage are eliminated.
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Key Words
- ATM, ataxia telangiectasia mutated
- ATR
- ATR, ataxia telangiectasia mutated and Rad3-related
- Bax, BCL2-associated X protein
- Bclxl, Bcl-2-like protein
- ChIP, chromatin immunoprecipitation
- Chk1, checkpoint kinase 1
- DNA damage
- DSBs, double-strand breaks
- H2AX, histone 2AX
- HR, homologous recombination
- Hu, hydroxyurea
- IR, ionizing radiation
- IκB, inhibitor kappaB
- IκK, inhibitor kappaB kinase
- NF-κB
- NF-κB, nuclear factor-kappaB
- RS, replication stress
- RT-PCR, reverse transcriptase polymerase chain reaction
- S-phase
- TAM, tamoxifen
- TMZ, temozolomide
- TopBP1, topoisomerase-binding protein-1
- p50
- replication stress
- siRNA, short interfering RNA
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Affiliation(s)
- Clayton D Crawley
- a Department of Surgery, Section of Neurosurgery ; The University of Chicago ; Chicago , IL USA
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Jagtap JC, Parveen D, Shah RD, Desai A, Bhosale D, Chugh A, Ranade D, Karnik S, Khedkar B, Mathur A, Natesh K, Chandrika G, Shastry P. Secretory prostate apoptosis response (Par)-4 sensitizes multicellular spheroids (MCS) of glioblastoma multiforme cells to tamoxifen-induced cell death. FEBS Open Bio 2014; 5:8-19. [PMID: 25685660 PMCID: PMC4309838 DOI: 10.1016/j.fob.2014.11.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 11/04/2014] [Accepted: 11/17/2014] [Indexed: 11/24/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most malignant form of brain tumor and is associated with resistance to conventional therapy and poor patient survival. Prostate apoptosis response (Par)-4, a tumor suppressor, is expressed as both an intracellular and secretory/extracellular protein. Though secretory Par-4 induces apoptosis in cancer cells, its potential in drug-resistant tumors remains to be fully explored. Multicellular spheroids (MCS) of cancer cells often acquire multi-drug resistance and serve as ideal experimental models. We investigated the role of Par-4 in Tamoxifen (TAM)-induced cell death in MCS of human cell lines and primary cultures of GBM tumors. TCGA and REMBRANT data analysis revealed that low levels of Par-4 correlated with low survival period (21.85 ± 19.30 days) in GBM but not in astrocytomas (59.13 ± 47.26 days) and oligodendrogliomas (58.04 ± 59.80 days) suggesting low PAWR expression as a predictive risk factor in GBM. Consistently, MCS of human cell lines and primary cultures displayed low Par-4 expression, high level of chemo-resistance genes and were resistant to TAM-induced cytotoxicity. In monolayer cells, TAM-induced cytotoxicity was associated with enhanced expression of Par-4 and was alleviated by silencing of Par-4 using specific siRNA. TAM effectively induced secretory Par-4 in conditioned medium (CM) of cells cultured as monolayer but not in MCS. Moreover, MCS were rendered sensitive to TAM-induced cell death by exposure to conditioned medium (CM)-containing Par-4 (derived from TAM-treated monolayer cells). Also TAM reduced the expression of Akt and PKCζ in GBM cells cultured as monolayer but not in MCS. Importantly, combination of TAM with inhibitors to PI3K inhibitor (LY294002) or PKCζ resulted in secretion of Par-4 and cell death in MCS. Since membrane GRP78 is overexpressed in most cancer cells but not normal cells, and secretory Par-4 induces apoptosis by binding to membrane GRP78, secretory Par-4 is an attractive candidate for potentially overcoming therapy-resistance not only in malignant glioma but in broad spectrum of cancers.
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Affiliation(s)
| | - D. Parveen
- National Centre for Cell Science (NCCS), Pune, India
| | | | | | | | - Ashish Chugh
- Department of Neurosurgery, Cimet’s Inamdar Multispeciality Hospital, Pune, India
| | - Deepak Ranade
- Department of Neurosurgery, D.Y. Patil Medical College, Pune, India
| | - Swapnil Karnik
- Department of Histopathology, Ruby Hall Clinic, Pune, India
| | | | | | - Kumar Natesh
- National Centre for Cell Science (NCCS), Pune, India
| | | | - Padma Shastry
- National Centre for Cell Science (NCCS), Pune, India
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