scholarly journals Epigenetic Regulation of Cancer Stem Cell Genes in Triple-Negative Breast Cancer

2012 ◽  
Vol 181 (1) ◽  
pp. 257-267 ◽  
Author(s):  
Naofumi Kagara ◽  
Kelly T. Huynh ◽  
Christine Kuo ◽  
Hideyuki Okano ◽  
Myung Shin Sim ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Epigenetic Regulation ◽  
Triple Negative

scholarly journals Isolation and Establishment of a Highly Proliferative, Cancer Stem Cell-Like, and Naturally Immortalized Triple-Negative Breast Cancer Cell Line, KAIMRC2

Cells ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1303
Author(s):  
Rizwan Ali ◽  
Hajar Al Zahrani ◽  
Tlili Barhoumi ◽  
Alshaimaa Alhallaj ◽  
Abdullah Mashhour ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Cell Line ◽  
Cancer Cell ◽  
Triple Negative Breast Cancer ◽  
Breast Cancer Cell Line ◽  
Triple Negative ◽  
Cancer Cell Line

In vitro studies of a disease are key to any in vivo investigation in understanding the disease and developing new therapy regimens. Immortalized cancer cell lines are the best and easiest model for studying cancer in vitro. Here, we report the establishment of a naturally immortalized highly tumorigenic and triple-negative breast cancer cell line, KAIMRC2. This cell line is derived from a Saudi Arabian female breast cancer patient with invasive ductal carcinoma. Immunocytochemistry showed a significant ratio of the KAIMRC2 cells’ expressing key breast epithelial and cancer stem cells (CSCs) markers, including CD47, CD133, CD49f, CD44, and ALDH-1A1. Gene and protein expression analysis showed overexpression of ABC transporter and AKT-PI3Kinase as well as JAK/STAT signaling pathways. In contrast, the absence of the tumor suppressor genes p53 and p73 may explain their high proliferative index. The mice model also confirmed the tumorigenic potential of the KAIMRC2 cell line, and drug tolerance studies revealed few very potent candidates. Our results confirmed an aggressive phenotype with metastatic potential and cancer stem cell-like characteristics of the KAIMR2 cell line. Furthermore, we have also presented potent small molecule inhibitors, especially Ryuvidine, that can be further developed, alone or in synergy with other potent inhibitors, to target multiple cancer-related pathways.

scholarly journals Targeted gene silencing of CCL2 inhibits triple negative breast cancer progression by blocking cancer stem cell renewal and M2 macrophage recruitment

Oncotarget ◽  
2016 ◽  
Vol 7 (31) ◽  
pp. 49349-49367 ◽  
Author(s):  
Wei Bin Fang ◽  
Min Yao ◽  
Gage Brummer ◽  
Diana Acevedo ◽  
Nabil Alhakamy ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Gene Silencing ◽  
Cancer Progression ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
M2 Macrophage ◽  
Cell Renewal ◽  
Stem Cell Renewal

Metabolic stress induces GD2+ cancer stem cell-like phenotype in triple-negative breast cancer

2021 ◽  
Author(s):  
Appalaraju Jaggupilli ◽  
Stanley Ly ◽  
Khoa Nguyen ◽  
Vivek Anand ◽  
Bin Yuan ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Metabolic Stress

scholarly journals GSK3β regulates epithelial-mesenchymal transition and cancer stem cell properties in triple-negative breast cancer

2019 ◽  
Vol 21 (1) ◽  
Author(s):  
Geraldine Vidhya Vijay ◽  
Na Zhao ◽  
Petra Den Hollander ◽  
Mike J. Toneff ◽  
Robiya Joseph ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Epithelial Mesenchymal Transition ◽  
Mesenchymal Transition

scholarly journals Targeting stromal remodeling and cancer stem cell plasticity overcomes chemoresistance in triple negative breast cancer

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Aurélie S. Cazet ◽  
Mun N. Hui ◽  
Benjamin L. Elsworth ◽  
Sunny Z. Wu ◽  
Daniel Roden ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Cell Plasticity ◽  
Stem Cell Plasticity

scholarly journals CD133+ cells with cancer stem cell characteristics associates with vasculogenic mimicry in triple-negative breast cancer

Oncogene ◽  
2012 ◽  
Vol 32 (5) ◽  
pp. 544-553 ◽  
Author(s):  
T J Liu ◽  
B C Sun ◽  
X L Zhao ◽  
X M Zhao ◽  
T Sun ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Vasculogenic Mimicry

scholarly journals EP300 Knockdown Abrogates Cancer Stem Cell Phenotype, Tumor Growth and Metastasis in Triple Negative Breast Cancer

2020 ◽  
Author(s):  
Alexander Ring ◽  
Pushpinder Kaur ◽  
Julie E. Lang
Keyword(s):  
Breast Cancer ◽  
Gene Expression ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Side Population ◽  
Tumor Growth And Metastasis

Abstract Background:Triple negative breast cancer (TNBC) is an aggressive breast cancer subtype with basal features, lacking the expression of receptors targeted successfully in other breast cancer subtypes. Treatment response to adjuvant and neoadjuvant chemotherapy is often short-lived and metastatic spread occurs at higher rates than other subtypes within the first five years after diagnosis. TNBCs exhibit stem cell features and are enriched for cancer stem cell (CSC) populations. E1A Binding Protein P300(EP300) is a large protein with multiple cellular functions, including as an effector in stem cell biology.Methods: We used a genetic knockdown (KD) model of EP300 in TNBC cell lines to investigate the effect on CSC phenotype, tumor growth and metastasis. Side population assay and tumorsphere suspension culture were used in vitro. Xenograft mouse models were used for in vivo studies. We performedin silico analysis of publicly available gene expression data sets to investigate CSC gene expression and molecular pathways as well as survival outcomes associated with EP300 expression in patients with TNBC and basal-like BC.Results: EP300 KD abolishedthe CSC phenotype by reducing ABCG2 expression, side population cells andtumorsphere formation capacityin vitro as well as tumor formation in a xenograft mouse model in vivo. Metastatic capacity was markedly reduced in EP300 KD cells in vivo, with no detection of circulating tumor cells.TCGA data analysis demonstrated that genes positively correlated with EP300 expression in TNBC and basal-like BC were associated with CSC biology. Survival analysis demonstrated that EP300 expression predicts poor recurrence free survival in TNBC and basal BC. Conclusion:We report a novel oncogenic role for EP300 in driving CSC phenotyperepresentinga potential target to address tumor initiation and metastatic spread in TNBC and basal-like BC. EP300 might serve as a prognostic marker and potential therapeutic target in TNBC.

scholarly journals EP300 Knockdown Reduces Cancer Stem Cell Phenotype, Tumor Growth and Metastasis in Triple Negative Breast Cancer

2020 ◽  
Author(s):  
Alexander Ring ◽  
Pushpinder Kaur ◽  
Julie E. Lang
Keyword(s):  
Breast Cancer ◽  
Gene Expression ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Side Population ◽  
Tumor Growth And Metastasis

Abstract Background: Triple negative breast cancer (TNBC) is an aggressive breast cancer subtype with basal features, lacking the expression of receptors targeted successfully in other breast cancer subtypes. Treatment response to adjuvant and neoadjuvant chemotherapy is often short-lived and metastatic spread occurs at higher rates than other subtypes within the first five years after diagnosis. TNBCs exhibit stem cell features and are enriched for cancer stem cell (CSC) populations. E1A Binding Protein P300 (EP300) is a large protein with multiple cellular functions, including as an effector in stem cell biology.Methods: We used a genetic knockdown (KD) model of EP300 in TNBC cell lines to investigate the effect on CSC phenotype, tumor growth and metastasis. Side population assay and tumorsphere suspension culture were used in vitro. Xenograft mouse models were used for in vivo studies. We performed in silico analysis of publicly available gene expression data sets to investigate CSC gene expression and molecular pathways as well as survival outcomes associated with EP300 expression in patients with TNBC and basal-like BC.Results: EP300 KD abolished the CSC phenotype by reducing ABCG2 expression, side population cells and tumorsphere formation capacity in vitro as well as tumor formation in a xenograft mouse model in vivo. Metastatic capacity was markedly reduced in EP300 KD cells in vivo, with no detection of circulating tumor cells. TCGA data analysis demonstrated that genes positively correlated with EP300 expression in TNBC and basal-like BC were associated with CSC biology. Survival analysis demonstrated that EP300 expression predicts poor recurrence free survival in TNBC and basal BC. Conclusion: We report a novel oncogenic role for EP300 in driving CSC phenotype representing a potential target to address tumor initiation and metastatic spread in TNBC and basal-like BC. EP300 might serve as a prognostic marker and potential therapeutic target in TNBC.

scholarly journals EP300 Knockdown Reduces Cancer Stem Cell Phenotype, Tumor Growth and Metastasis in Triple Negative Breast Cancer

2020 ◽  
Author(s):  
Alexander Ring ◽  
Pushpinder Kaur ◽  
Julie E. Lang
Keyword(s):  
Breast Cancer ◽  
Gene Expression ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Side Population ◽  
Tumor Growth And Metastasis

Abstract Background: Triple negative breast cancer (TNBC) is an aggressive breast cancer subtype with basal features, lacking the expression of receptors targeted successfully in other breast cancer subtypes. Treatment response to adjuvant and neoadjuvant chemotherapy is often short-lived and metastatic spread occurs at higher rates than other subtypes within the first five years after diagnosis. TNBCs exhibit stem cell features and are enriched for cancer stem cell (CSC) populations. E1A Binding Protein P300 (EP300) is a large protein with multiple cellular functions, including as an effector in stem cell biology.Methods: We used a genetic knockdown (KD) model of EP300 in TNBC cell lines to investigate the effect on CSC phenotype, tumor growth and metastasis. Side population assay and tumorsphere suspension culture were used in vitro. Xenograft mouse models were used for in vivo studies. We performed in silico analysis of publicly available gene expression data sets to investigate CSC gene expression and molecular pathways as well as survival outcomes associated with EP300 expression in patients with TNBC and basal-like BC.Results: EP300 KD abolished the CSC phenotype by reducing ABCG2 expression, side population cells and tumorsphere formation capacity in vitro as well as tumor formation in a xenograft mouse model in vivo. Metastatic capacity was markedly reduced in EP300 KD cells in vivo, with no detection of circulating tumor cells. TCGA data analysis demonstrated that genes positively correlated with EP300 expression in TNBC and basal-like BC were associated with CSC biology. Survival analysis demonstrated that EP300 expression predicts poor recurrence free survival in TNBC and basal BC. Conclusion: We report a novel oncogenic role for EP300 in driving CSC phenotype representing a potential target to address tumor initiation and metastatic spread in TNBC and basal-like BC. EP300 might serve as a prognostic marker and potential therapeutic target in TNBC.

scholarly journals EP300 Knockdown Reduces Cancer Stem Cell Phenotype, Tumor Growth and Metastasis in Triple Negative Breast Cancer

2020 ◽  
Author(s):  
Alexander Ring ◽  
Pushpinder Kaur ◽  
Julie E. Lang
Keyword(s):  
Breast Cancer ◽  
Gene Expression ◽  
Stem Cell ◽  
Cancer Stem Cell ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
Side Population ◽  
Tumor Growth And Metastasis

Abstract Background: Triple negative breast cancer (TNBC) is an aggressive breast cancer subtype with basal features, lacking the expression of receptors targeted successfully in other breast cancer subtypes. Treatment response to adjuvant and neoadjuvant chemotherapy is often short-lived and metastatic spread occurs at higher rates than other subtypes within the first five years after diagnosis. TNBCs exhibit stem cell features and are enriched for cancer stem cell (CSC) populations. E1A Binding Protein P300 (EP300) is a large protein with multiple cellular functions, including as an effector in stem cell biology.Methods: We used a genetic knockdown (KD) model of EP300 in TNBC cell lines to investigate the effect on CSC phenotype, tumor growth and metastasis. Side population assay and tumorsphere suspension culture were used in vitro. Xenograft mouse models were used for in vivo studies. We performed in silico analysis of publicly available gene expression data sets to investigate CSC gene expression and molecular pathways as well as survival outcomes associated with EP300 expression in patients with TNBC and basal-like BC.Results: EP300 KD abolished the CSC phenotype by reducing ABCG2 expression, side population cells and tumorsphere formation capacity in vitro as well as tumor formation in a xenograft mouse model in vivo. Metastatic capacity was markedly reduced in EP300 KD cells in vivo, with no detection of circulating tumor cells. TCGA data analysis demonstrated that genes positively correlated with EP300 expression in TNBC and basal-like BC were associated with CSC biology. Survival analysis demonstrated that EP300 expression predicts poor recurrence free survival in TNBC and basal BC.Conclusion: We report a novel oncogenic role for EP300 in driving CSC phenotype representing a potential target to address tumor initiation and metastatic spread in TNBC and basal-like BC. EP300 might serve as a prognostic marker and potential therapeutic target in TNBC.

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