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  1. Article ; Online: ΔNp63α in cancer: importance and therapeutic opportunities.

    Fisher, Matthew L / Balinth, Seamus / Mills, Alea A

    Trends in cell biology

    2022  Volume 33, Issue 4, Page(s) 280–292

    Abstract: Our understanding of cancer and the key pathways that drive cancer survival has expanded rapidly over the past several decades. However, there are still important challenges that continue to impair patient survival, including our inability to target ... ...

    Abstract Our understanding of cancer and the key pathways that drive cancer survival has expanded rapidly over the past several decades. However, there are still important challenges that continue to impair patient survival, including our inability to target cancer stem cells (CSCs), metastasis, and drug resistance. The transcription factor p63 is a p53 family member with multiple isoforms that carry out a wide array of functions. Here, we discuss the critical importance of the ΔNp63α isoform in cancer and potential therapeutic strategies to target ΔNp63α expression to impair the CSC population, as well as to prevent metastasis and drug resistance to improve patient survival.
    MeSH term(s) Humans ; Tumor Suppressor Proteins/genetics ; Tumor Suppressor Proteins/metabolism ; Neoplasms/genetics ; Neoplasms/therapy ; Transcription Factors/metabolism ; Protein Isoforms/genetics ; Protein Isoforms/metabolism ; Gene Expression Regulation, Neoplastic ; Cell Line, Tumor
    Chemical Substances Tumor Suppressor Proteins ; Transcription Factors ; Protein Isoforms
    Language English
    Publishing date 2022-09-14
    Publishing country England
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 30122-x
    ISSN 1879-3088 ; 0962-8924
    ISSN (online) 1879-3088
    ISSN 0962-8924
    DOI 10.1016/j.tcb.2022.08.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: The Chromodomain Helicase DNA-Binding Chromatin Remodelers: Family Traits that Protect from and Promote Cancer.

    Mills, Alea A

    Cold Spring Harbor perspectives in medicine

    2017  Volume 7, Issue 4

    Abstract: A plethora of mutations in chromatin regulators in diverse human cancers is emerging, attesting to the pivotal role of chromatin dynamics in tumorigenesis. A recurrent theme is inactivation of the chromodomain helicase DNA-binding (CHD) family of ... ...

    Abstract A plethora of mutations in chromatin regulators in diverse human cancers is emerging, attesting to the pivotal role of chromatin dynamics in tumorigenesis. A recurrent theme is inactivation of the chromodomain helicase DNA-binding (CHD) family of proteins-ATP-dependent chromatin remodelers that govern the cellular machinery's access to DNA, thereby controlling fundamental processes, including transcription, proliferation, and DNA damage repair. This review highlights what is currently known about how genetic and epigenetic perturbation of CHD proteins and the pathways that they regulate set the stage for cancer, providing new insight for designing more effective anti-cancer therapies.
    MeSH term(s) Chromatin Assembly and Disassembly/genetics ; DNA Helicases/genetics ; DNA Repair ; DNA-Binding Proteins/genetics ; Humans ; Mutation ; Neoplasms/genetics ; Phenotype ; Transcription, Genetic
    Chemical Substances DNA-Binding Proteins ; DNA Helicases (EC 3.6.4.-)
    Language English
    Publishing date 2017-04-03
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 2157-1422
    ISSN (online) 2157-1422
    DOI 10.1101/cshperspect.a026450
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Chd5 Regulates the Transcription Factor Six3 to Promote Neuronal Differentiation.

    Shrestha, Padmina / Jaganathan, Anbalagan / Huilgol, Dhananjay / Ballon, Carlos / Hwangbo, Yon / Mills, Alea A

    Stem cells (Dayton, Ohio)

    2023  Volume 41, Issue 3, Page(s) 242–251

    Abstract: Chromodomain helicase DNA-binding protein 5 (Chd5) is an ATP-dependent chromatin remodeler that promotes neuronal differentiation. However, the mechanism behind the action of Chd5 during neurogenesis is not clearly understood. Here we use transcriptional ...

    Abstract Chromodomain helicase DNA-binding protein 5 (Chd5) is an ATP-dependent chromatin remodeler that promotes neuronal differentiation. However, the mechanism behind the action of Chd5 during neurogenesis is not clearly understood. Here we use transcriptional profiling of cells obtained from Chd5 deficient mice at early and late stages of neuronal differentiation to show that Chd5 regulates neurogenesis by directing stepwise transcriptional changes. During early stages of neurogenesis, Chd5 promotes expression of the proneural transcription factor Six3 to repress Wnt5a, a non-canonical Wnt ligand essential for the maturation of neurons. This previously unappreciated ability of Chd5 to transcriptionally repress neuronal maturation factors is critical for both lineage specification and maturation. Thus, Chd5 facilitates early transcriptional changes in neural stem cells, thereby initiating transcriptional programs essential for neuronal fate specification.
    MeSH term(s) Mice ; Animals ; Transcription Factors/genetics ; Transcription Factors/metabolism ; Gene Expression Regulation ; Neurons/metabolism ; Chromatin/metabolism ; Neurogenesis/genetics ; Cell Differentiation/genetics
    Chemical Substances Transcription Factors ; Chromatin
    Language English
    Publishing date 2023-01-13
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1143556-2
    ISSN 1549-4918 ; 1066-5099
    ISSN (online) 1549-4918
    ISSN 1066-5099
    DOI 10.1093/stmcls/sxad002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: p63-related signaling at a glance.

    Fisher, Matthew L / Balinth, Seamus / Mills, Alea A

    Journal of cell science

    2020  Volume 133, Issue 17

    Abstract: p63 (also known as TP63) is a transcription factor of the p53 family, along with p73. Multiple isoforms of p63 have been discovered and these have diverse functions encompassing a wide array of cell biology. p63 isoforms are implicated in lineage ... ...

    Abstract p63 (also known as TP63) is a transcription factor of the p53 family, along with p73. Multiple isoforms of p63 have been discovered and these have diverse functions encompassing a wide array of cell biology. p63 isoforms are implicated in lineage specification, proliferative potential, differentiation, cell death and survival, DNA damage response and metabolism. Furthermore, p63 is linked to human disease states including cancer. p63 is critical to many aspects of cell signaling, and in this Cell science at a glance article and the accompanying poster, we focus on the signaling cascades regulating TAp63 and ΔNp63 isoforms and those that are regulated by TAp63 and ΔNp63, as well the role of p63 in disease.
    MeSH term(s) Humans ; Neoplasms/genetics ; Protein Isoforms/genetics ; Protein Isoforms/metabolism ; Signal Transduction ; Transcription Factors/genetics
    Chemical Substances Protein Isoforms ; Transcription Factors
    Language English
    Publishing date 2020-09-11
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2993-2
    ISSN 1477-9137 ; 0021-9533
    ISSN (online) 1477-9137
    ISSN 0021-9533
    DOI 10.1242/jcs.228015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Cancer-associated fibroblasts promote cancer stemness by inducing expression of the chromatin-modifying protein CBX4 in squamous cell carcinoma.

    Fisher, Matthew L / Balinth, Seamus / Hwangbo, Yon / Wu, Caizhi / Ballon, Carlos / Goldberg, Gary L / Mills, Alea A

    Carcinogenesis

    2023  Volume 44, Issue 6, Page(s) 485–496

    Abstract: The chromobox-containing protein CBX4 is an important regulator of epithelial cell proliferation and differentiation, and has been implicated in several cancer types. The cancer stem cell (CSC) population is a key driver of metastasis and recurrence. The ...

    Abstract The chromobox-containing protein CBX4 is an important regulator of epithelial cell proliferation and differentiation, and has been implicated in several cancer types. The cancer stem cell (CSC) population is a key driver of metastasis and recurrence. The undifferentiated, plastic state characteristic of CSCs relies on cues from the microenvironment. Cancer-associated fibroblasts (CAFs) are a major component of the microenvironment that can influence the CSC population through the secretion of extracellular matrix and a variety of growth factors. Here we show CBX4 is a critical regulator of the CSC phenotype in squamous cell carcinomas of the skin and hypopharynx. Moreover, CAFs can promote the expression of CBX4 in the CSC population through the secretion of interleukin-6 (IL-6). IL-6 activates JAK/STAT3 signaling to increase ∆Np63α-a key transcription factor that is essential for epithelial stem cell function and the maintenance of proliferative potential that is capable of regulating CBX4. Targeting the JAK/STAT3 axis or CBX4 directly suppresses the aggressive phenotype of CSCs and represents a novel opportunity for therapeutic intervention.
    MeSH term(s) Humans ; Cancer-Associated Fibroblasts/metabolism ; Interleukin-6/metabolism ; Cell Line, Tumor ; Carcinoma, Squamous Cell/pathology ; Cell Proliferation/genetics ; Chromatin/metabolism ; Neoplastic Stem Cells/pathology ; Fibroblasts/metabolism ; Tumor Microenvironment/genetics ; Ligases/genetics ; Ligases/metabolism ; Polycomb-Group Proteins/genetics ; Polycomb-Group Proteins/metabolism
    Chemical Substances Interleukin-6 ; Chromatin ; CBX4 protein, human (EC 6.3.2.-) ; Ligases (EC 6.-) ; Polycomb-Group Proteins
    Language English
    Publishing date 2023-07-18
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 603134-1
    ISSN 1460-2180 ; 0143-3334
    ISSN (online) 1460-2180
    ISSN 0143-3334
    DOI 10.1093/carcin/bgad048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: EZH2 regulates a SETDB1/ΔNp63α axis via RUNX3 to drive a cancer stem cell phenotype in squamous cell carcinoma.

    Balinth, Seamus / Fisher, Matthew L / Hwangbo, Yon / Wu, Caizhi / Ballon, Carlos / Sun, Xueqin / Mills, Alea A

    Oncogene

    2022  Volume 41, Issue 35, Page(s) 4130–4144

    Abstract: Enhancer of zeste homolog 2 (EZH2) and SET domain bifurcated 1 (SETDB1, also known as ESET) are oncogenic methyltransferases implicated in a number of human cancers. These enzymes typically function as epigenetic repressors of target genes by methylating ...

    Abstract Enhancer of zeste homolog 2 (EZH2) and SET domain bifurcated 1 (SETDB1, also known as ESET) are oncogenic methyltransferases implicated in a number of human cancers. These enzymes typically function as epigenetic repressors of target genes by methylating histone H3 K27 and H3-K9 residues, respectively. Here, we show that EZH2 and SETDB1 are essential to proliferation in 3 SCC cell lines, HSC-5, FaDu, and Cal33. Additionally, we find both of these proteins highly expressed in an aggressive stem-like SCC sub-population. Depletion of either EZH2 or SETDB1 disrupts these stem-like cells and their associated phenotypes of spheroid formation, invasion, and tumor growth. We show that SETDB1 regulates this SCC stem cell phenotype through cooperation with ΔNp63α, an oncogenic isoform of the p53-related transcription factor p63. Furthermore, EZH2 is upstream of both SETDB1 and ΔNp63α, activating these targets via repression of the tumor suppressor RUNX3. We show that targeting this pathway with inhibitors of EZH2 results in activation of RUNX3 and repression of both SETDB1 and ΔNp63α, antagonizing the SCC cancer stem cell phenotype. This work highlights a novel pathway that drives an aggressive cancer stem cell phenotype and demonstrates a means of pharmacological intervention.
    MeSH term(s) Carcinoma, Squamous Cell ; Cell Line, Tumor ; Core Binding Factor Alpha 3 Subunit ; Enhancer of Zeste Homolog 2 Protein ; Histone-Lysine N-Methyltransferase ; Humans ; Neoplastic Stem Cells ; Phenotype ; Promoter Regions, Genetic ; Transcription Factors
    Chemical Substances Core Binding Factor Alpha 3 Subunit ; Runx3 protein, human ; Transcription Factors ; EZH2 protein, human (EC 2.1.1.43) ; Enhancer of Zeste Homolog 2 Protein (EC 2.1.1.43) ; Histone-Lysine N-Methyltransferase (EC 2.1.1.43) ; SETDB1 protein, human (EC 2.1.1.43)
    Language English
    Publishing date 2022-07-21
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 639046-8
    ISSN 1476-5594 ; 0950-9232
    ISSN (online) 1476-5594
    ISSN 0950-9232
    DOI 10.1038/s41388-022-02417-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Packing for the journey: CHD5 remodels the genome.

    Li, Wangzhi / Mills, Alea A

    Cell cycle (Georgetown, Tex.)

    2014  Volume 13, Issue 12, Page(s) 1833–1834

    MeSH term(s) Animals ; Chromatin/metabolism ; Chromatin Assembly and Disassembly/genetics ; DNA Helicases/genetics ; Infertility, Male/genetics ; Male ; Spermatogenesis/genetics ; Spermatozoa/metabolism
    Chemical Substances Chromatin ; DNA Helicases (EC 3.6.4.-)
    Language English
    Publishing date 2014-05-27
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 2146183-1
    ISSN 1551-4005 ; 1538-4101 ; 1554-8627
    ISSN (online) 1551-4005
    ISSN 1538-4101 ; 1554-8627
    DOI 10.4161/cc.29378
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Throwing the cancer switch: reciprocal roles of polycomb and trithorax proteins.

    Mills, Alea A

    Nature reviews. Cancer

    2010  Volume 10, Issue 10, Page(s) 669–682

    Abstract: The discovery that cancer can be governed above and beyond the level of our DNA presents a new era for designing therapies that reverse the epigenetic state of a tumour cell. Understanding how altered chromatin dynamics leads to malignancy is essential ... ...

    Abstract The discovery that cancer can be governed above and beyond the level of our DNA presents a new era for designing therapies that reverse the epigenetic state of a tumour cell. Understanding how altered chromatin dynamics leads to malignancy is essential for controlling tumour cells while sparing normal cells. Polycomb and trithorax group proteins are evolutionarily conserved and maintain chromatin in the 'off' or 'on' states, thereby preventing or promoting gene expression, respectively. Recent work highlights the dynamic interplay between these opposing classes of proteins, providing new avenues for understanding how these epigenetic regulators function in tumorigenesis.
    MeSH term(s) Animals ; Chromatin/physiology ; Histone-Lysine N-Methyltransferase ; Humans ; Myeloid-Lymphoid Leukemia Protein/physiology ; Neoplasms/pathology ; Neoplasms/physiopathology ; Polycomb-Group Proteins ; Repressor Proteins/physiology
    Chemical Substances Chromatin ; KMT2A protein, human ; Polycomb-Group Proteins ; Repressor Proteins ; Myeloid-Lymphoid Leukemia Protein (149025-06-9) ; Histone-Lysine N-Methyltransferase (EC 2.1.1.43)
    Language English
    Publishing date 2010-09-23
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2062767-1
    ISSN 1474-1768 ; 1474-175X
    ISSN (online) 1474-1768
    ISSN 1474-175X
    DOI 10.1038/nrc2931
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  9. Article ; Online: Architects of the genome: CHD dysfunction in cancer, developmental disorders and neurological syndromes.

    Li, Wangzhi / Mills, Alea A

    Epigenomics

    2014  Volume 6, Issue 4, Page(s) 381–395

    Abstract: Chromatin is vital to normal cells, and its deregulation contributes to a spectrum of human ailments. An emerging concept is that aberrant chromatin regulation culminates in gene expression programs that set the stage for the seemingly diverse ... ...

    Abstract Chromatin is vital to normal cells, and its deregulation contributes to a spectrum of human ailments. An emerging concept is that aberrant chromatin regulation culminates in gene expression programs that set the stage for the seemingly diverse pathologies of cancer, developmental disorders and neurological syndromes. However, the mechanisms responsible for such common etiology have been elusive. Recent evidence has implicated lesions affecting chromatin-remodeling proteins in cancer, developmental disorders and neurological syndromes, suggesting a common source for these different pathologies. Here, we focus on the chromodomain helicase DNA binding chromatin-remodeling family and the recent evidence for its deregulation in diverse pathological conditions, providing a new perspective on the underlying mechanisms and their implications for these prevalent human diseases.
    MeSH term(s) Animals ; Chromatin Assembly and Disassembly ; DNA Helicases/genetics ; DNA-Binding Proteins/genetics ; Developmental Disabilities/genetics ; Genome ; Humans ; Neoplasms/genetics ; Nervous System Diseases/genetics
    Chemical Substances DNA-Binding Proteins ; DNA Helicases (EC 3.6.4.-)
    Language English
    Publishing date 2014-10-21
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ISSN 1750-192X
    ISSN (online) 1750-192X
    DOI 10.2217/epi.14.31
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Altered synaptic transmission and maturation of hippocampal CA1 neurons in a mouse model of human chr16p11.2 microdeletion.

    Lu, Hung-Chi / Mills, Alea A / Tian, Di

    Journal of neurophysiology

    2017  Volume 119, Issue 3, Page(s) 1005–1018

    Abstract: The pathophysiology of neurodevelopmental disorders is often observed early in infancy and toddlerhood. Mouse models of syndromic disorders have provided insight regarding mechanisms of action, but most studies have focused on characterization in ... ...

    Abstract The pathophysiology of neurodevelopmental disorders is often observed early in infancy and toddlerhood. Mouse models of syndromic disorders have provided insight regarding mechanisms of action, but most studies have focused on characterization in juveniles and adults. Insight into developmental trajectories, particularly those related to circuit and synaptic function, will likely yield important information regarding disorder pathogenesis that leads to symptom progression. Chromosome 16p11.2 microdeletion is one of the most common copy number variations associated with a spectrum of neurodevelopmental disorders. Yet, how haploinsufficiency of chr16p11.2 affects early synaptic maturation and function is unknown. To address this knowledge gap, the present study focused on three key components of circuit formation and function, basal synaptic transmission, local circuit function, and maturation of glutamatergic synapses, in developing hippocampal CA1 neurons in a chr16p11.2 microdeletion mouse model. The data demonstrate increased excitability, imbalance in excitation and inhibition, and accelerated maturation of glutamatergic synapses in heterozygous deletion mutant CA1 neurons. Given the critical role of early synaptic development in shaping neuronal connectivity and circuitry formation, these newly identified synaptic abnormalities in chr16p11.2 microdeletion mice may contribute to altered developmental trajectory and function of the developing brain. NEW & NOTEWORTHY The synaptic pathophysiology underlying neurodevelopmental disorders often emerges during infancy and toddlerhood. Therefore, identifying initial changes in synaptic function is crucial for gaining a mechanistic understanding of the pathophysiology, which ultimately will facilitate the design of early interventions. Here, we investigated synaptic and local circuit properties of hippocampal CA1 neurons in a human chr16p11.2 microdeletion mouse model during early postnatal development (preweaning). The data demonstrate increased neuronal excitability, excitatory/inhibitory imbalance, and accelerated maturation of glutamatergic synapses. These perturbations in early hippocampal circuit function may underlie the early pathogenesis of the heterozygous chr16p11.2 microdeletion, which is often associated with epilepsy and intellectual disability.
    MeSH term(s) Animals ; CA1 Region, Hippocampal/growth & development ; CA1 Region, Hippocampal/physiopathology ; Chromosomes, Human, Pair 16/genetics ; DNA Copy Number Variations ; Gene Deletion ; Humans ; Male ; Membrane Potentials ; Mice, Inbred C57BL ; Mice, Transgenic ; Neurons/physiology ; Receptors, AMPA/physiology ; Synaptic Transmission
    Chemical Substances Receptors, AMPA
    Language English
    Publishing date 2017-12-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80161-6
    ISSN 1522-1598 ; 0022-3077
    ISSN (online) 1522-1598
    ISSN 0022-3077
    DOI 10.1152/jn.00306.2017
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