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  1. Artikel ; Online: TFE3 promotes ferroptosis in melanoma.

    Dias, Diogo / Louphrasitthiphol, Pakavarin / Goding, Colin R

    Pigment cell & melanoma research

    2023  Band 37, Heft 2, Seite(n) 286–290

    Mesh-Begriff(e) Humans ; Melanoma/genetics ; Ferroptosis/genetics ; Basic Helix-Loop-Helix Leucine Zipper Transcription Factors
    Chemische Substanzen Basic Helix-Loop-Helix Leucine Zipper Transcription Factors ; TFE3 protein, human
    Sprache Englisch
    Erscheinungsdatum 2023-11-12
    Erscheinungsland England
    Dokumenttyp Letter
    ZDB-ID 2409570-9
    ISSN 1755-148X ; 1600-0749 ; 0893-5785 ; 1755-1471
    ISSN (online) 1755-148X ; 1600-0749
    ISSN 0893-5785 ; 1755-1471
    DOI 10.1111/pcmr.13149
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Novel positron emission tomography imaging targeting cell surface glycans for pancreatic cancer:

    Kuroda, Yukihito / Oda, Tatsuya / Shimomura, Osamu / Louphrasitthiphol, Pakavarin / Mathis, Bryan J / Tateno, Hiroaki / Hatano, Kentaro

    Cancer science

    2023  Band 114, Heft 8, Seite(n) 3364–3373

    Abstract: Advancement in early detection modalities will greatly improve the overall prognoses of pancreatic ductal adenocarcinoma (PDAC). For this purpose, we report a novel class of tumor-specific probes for positron emission tomography (PET) based on targeting ... ...

    Abstract Advancement in early detection modalities will greatly improve the overall prognoses of pancreatic ductal adenocarcinoma (PDAC). For this purpose, we report a novel class of tumor-specific probes for positron emission tomography (PET) based on targeting cell surface glycans. The PDAC-targeting ability of rBC2LCN lectin, combined with fluorine-18 (
    Mesh-Begriff(e) Humans ; Mice ; Animals ; Mice, Nude ; Cell Line, Tumor ; Positron-Emission Tomography/methods ; Pancreatic Neoplasms/diagnostic imaging ; Carcinoma, Pancreatic Ductal ; Radiopharmaceuticals ; Pancreatic Neoplasms
    Chemische Substanzen Fluorine-18 (GZ5I74KB8G) ; rBC2LCN lectin ; Radiopharmaceuticals
    Sprache Englisch
    Erscheinungsdatum 2023-05-19
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2115647-5
    ISSN 1349-7006 ; 1349-7006
    ISSN (online) 1349-7006
    ISSN 1349-7006
    DOI 10.1111/cas.15846
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Macrophage Cytoplasmic Transfer in Melanoma Invasion.

    Louphrasitthiphol, Pakavarin / Goding, Colin R

    Developmental cell

    2017  Band 43, Heft 5, Seite(n) 543–544

    Abstract: Within tumors, macrophage infiltration can promote cancer cell invasiveness and, consequently, metastatic dissemination. In this issue of Developmental Cell, Roh-Johnson et al. (2017) reveal that cytoplasmic transfer from macrophages to melanoma cells ... ...

    Abstract Within tumors, macrophage infiltration can promote cancer cell invasiveness and, consequently, metastatic dissemination. In this issue of Developmental Cell, Roh-Johnson et al. (2017) reveal that cytoplasmic transfer from macrophages to melanoma cells correlates with melanoma invasion and arises as a result of intimate cell-cell contact.
    Mesh-Begriff(e) Animals ; Cell Line, Tumor ; Cytoplasm/metabolism ; Humans ; Macrophages/pathology ; Melanoma/metabolism ; Neoplasm Invasiveness/pathology
    Sprache Englisch
    Erscheinungsdatum 2017--04
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Review ; Comment
    ZDB-ID 2054967-2
    ISSN 1878-1551 ; 1534-5807
    ISSN (online) 1878-1551
    ISSN 1534-5807
    DOI 10.1016/j.devcel.2017.11.012
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: DNA damage remodels the MITF interactome to increase melanoma genomic instability.

    Binet, Romuald / Lambert, Jean-Philippe / Tomkova, Marketa / Tischfield, Samuel / Baggiolini, Arianna / Picaud, Sarah / Sarkar, Sovan / Louphrasitthiphol, Pakavarin / Dias, Diogo / Carreira, Suzanne / Humphrey, Timothy C / Fillipakopoulos, Panagis / White, Richard / Goding, Colin R

    Genes & development

    2024  Band 38, Heft 1-2, Seite(n) 70–94

    Abstract: Since genome instability can drive cancer initiation and progression, cells have evolved highly effective and ubiquitous DNA damage response (DDR) programs. However, some cells (for example, in skin) are normally exposed to high levels of DNA-damaging ... ...

    Abstract Since genome instability can drive cancer initiation and progression, cells have evolved highly effective and ubiquitous DNA damage response (DDR) programs. However, some cells (for example, in skin) are normally exposed to high levels of DNA-damaging agents. Whether such high-risk cells possess lineage-specific mechanisms that tailor DNA repair to the tissue remains largely unknown. Using melanoma as a model, we show here that the microphthalmia-associated transcription factor MITF, a lineage addition oncogene that coordinates many aspects of melanocyte and melanoma biology, plays a nontranscriptional role in shaping the DDR. On exposure to DNA-damaging agents, MITF is phosphorylated at S325, and its interactome is dramatically remodeled; most transcription cofactors dissociate, and instead MITF interacts with the MRE11-RAD50-NBS1 (MRN) complex. Consequently, cells with high MITF levels accumulate stalled replication forks and display defects in homologous recombination-mediated repair associated with impaired MRN recruitment to DNA damage. In agreement with this, high MITF levels are associated with increased single-nucleotide and copy number variant burdens in melanoma. Significantly, the SUMOylation-defective MITF-E318K melanoma predisposition mutation recapitulates the effects of DNA-PKcs-phosphorylated MITF. Our data suggest that a nontranscriptional function of a lineage-restricted transcription factor contributes to a tissue-specialized modulation of the DDR that can impact cancer initiation.
    Mesh-Begriff(e) Humans ; Melanoma/genetics ; Microphthalmia-Associated Transcription Factor/genetics ; DNA Damage ; Genomic Instability/genetics ; DNA
    Chemische Substanzen Microphthalmia-Associated Transcription Factor ; DNA (9007-49-2) ; MITF protein, human
    Sprache Englisch
    Erscheinungsdatum 2024-02-13
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 806684-x
    ISSN 1549-5477 ; 0890-9369
    ISSN (online) 1549-5477
    ISSN 0890-9369
    DOI 10.1101/gad.350740.123
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: Hypoxia at 3D organoid establishment selects essential subclones within heterogenous pancreatic cancer.

    Kumano, Koichiro / Nakahashi, Hiromitsu / Louphrasitthiphol, Pakavarin / Kuroda, Yukihito / Miyazaki, Yoshihiro / Shimomura, Osamu / Hashimoto, Shinji / Akashi, Yoshimasa / Mathis, Bryan J / Kim, Jaejeong / Owada, Yohei / Goding, Colin R / Oda, Tatsuya

    Frontiers in cell and developmental biology

    2024  Band 12, Seite(n) 1327772

    Abstract: Pancreatic ductal adenocarcinoma (PDAC) is especially hypoxic and composed of heterogeneous cell populations containing hypoxia-adapted cells. Hypoxia as a microenvironment of PDAC is known to cause epithelial-mesenchymal transition (EMT) and resistance ... ...

    Abstract Pancreatic ductal adenocarcinoma (PDAC) is especially hypoxic and composed of heterogeneous cell populations containing hypoxia-adapted cells. Hypoxia as a microenvironment of PDAC is known to cause epithelial-mesenchymal transition (EMT) and resistance to therapy. Therefore, cells adapted to hypoxia possess malignant traits that should be targeted for therapy. However, current 3D organoid culture systems are usually cultured under normoxia, losing hypoxia-adapted cells due to selectivity bias at the time of organoid establishment. To overcome any potential selection bias, we focused on oxygen concentration during the establishment of 3D organoids. We subjected identical PDAC surgical samples to normoxia (O2 20%) or hypoxia (O2 1%), yielding glandular and solid organoid morphology, respectively. Pancreatic cancer organoids established under hypoxia displayed higher expression of EMT-related proteins, a Moffitt basal-like subtype transcriptome, and higher 5-FU resistance in contrast to organoids established under normoxia. We suggest that hypoxia during organoid establishment efficiently selects for hypoxia-adapted cells possibly responsible for PDAC malignant traits, facilitating a fundamental source for elucidating and developing new treatment strategies against PDAC.
    Sprache Englisch
    Erscheinungsdatum 2024-02-05
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2737824-X
    ISSN 2296-634X
    ISSN 2296-634X
    DOI 10.3389/fcell.2024.1327772
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel: Phenotype-specific melanoma uptake of fatty acid from human adipocytes activates AXL and CAV1-dependent β-catenin nuclear accumulation.

    Chocarro-Calvo, Ana / Jociles-Ortega, Miguel / García-Martinez, José Manuel / Louphrasitthiphol, Pakavarin / Garcia, Yurena Vivas / Ramírez-Sánchez, Ana / Chauhan, Jagat / Fiuza, M Carmen / Duran, Manuel / García-Jiménez, Custodia / Goding, Colin R

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Phenotypic diversity of cancer cells within tumors generated through bi-directional interactions with the tumor microenvironment has emerged as a major driver of disease progression and therapy resistance. Nutrient availability plays a critical role in ... ...

    Abstract Phenotypic diversity of cancer cells within tumors generated through bi-directional interactions with the tumor microenvironment has emerged as a major driver of disease progression and therapy resistance. Nutrient availability plays a critical role in determining phenotype, but whether specific nutrients elicit different responses on distinct phenotypes is poorly understood. Here we show, using melanoma as a model, that only MITF
    Sprache Englisch
    Erscheinungsdatum 2024-01-24
    Erscheinungsland United States
    Dokumenttyp Preprint
    DOI 10.1101/2024.01.21.576568
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel: Aberrant Glycosylation in Pancreatic Ductal Adenocarcinoma 3D Organoids Is Mediated by KRAS Mutations.

    Nakahashi, Hiromitsu / Oda, Tatsuya / Shimomura, Osamu / Akashi, Yoshimasa / Takahashi, Kazuhiro / Miyazaki, Yoshihiro / Furuta, Tomoaki / Kuroda, Yukihito / Louphrasitthiphol, Pakavarin / Mathis, Bryan J / Tateno, Hiroaki

    Journal of oncology

    2024  Band 2024, Seite(n) 1529449

    Abstract: Aberrant glycosylation in tumor cells is a hallmark during carcinogenesis. KRAS gene mutations are the most well-known oncogenic abnormalities but their association with glycan alterations in pancreatic ductal adenocarcinoma (PDAC) is largely unknown. We ...

    Abstract Aberrant glycosylation in tumor cells is a hallmark during carcinogenesis. KRAS gene mutations are the most well-known oncogenic abnormalities but their association with glycan alterations in pancreatic ductal adenocarcinoma (PDAC) is largely unknown. We employed patient-derived 3D organoids to culture pure live PDAC cells, excluding contamination by fibroblasts and immune cells, to gasp the comprehensive cancer cell surface glycan expression profile using lectin microarray and transcriptomic analyses. Surgical specimens from 24 PDAC patients were digested and embedded into a 3D culture system. Surface-bound glycans of 3D organoids were analyzed by high-density, 96-lectin microarrays. KRAS mutation status and expression of various glycosyltransferases were analyzed by RNA-seq. We successfully established 16 3D organoids: 14 PDAC, 1 intraductal papillary mucinous neoplasm (IPMN), and 1 normal pancreatic duct. KRAS was mutated in 13 (7 G12V, 5 G12D, 1 Q61L) and wild in 3 organoids (1 normal duct, 1 IPMN, 1 PDAC). Lectin reactivity of AAL (
    Sprache Englisch
    Erscheinungsdatum 2024-03-18
    Erscheinungsland Egypt
    Dokumenttyp Journal Article
    ZDB-ID 2461349-6
    ISSN 1687-8469 ; 1687-8450
    ISSN (online) 1687-8469
    ISSN 1687-8450
    DOI 10.1155/2024/1529449
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Artikel ; Online: ABCB5 is activated by MITF and β-catenin and is associated with melanoma differentiation.

    Louphrasitthiphol, Pakavarin / Chauhan, Jagat / Goding, Colin R

    Pigment cell & melanoma research

    2019  Band 33, Heft 1, Seite(n) 112–118

    Abstract: Defining markers of different phenotypic states in melanoma is important for understanding disease progression, determining the response to therapy, and defining the molecular mechanisms underpinning phenotype-switching driven by the changing intratumor ... ...

    Abstract Defining markers of different phenotypic states in melanoma is important for understanding disease progression, determining the response to therapy, and defining the molecular mechanisms underpinning phenotype-switching driven by the changing intratumor microenvironment. The ABCB5 transporter is implicated in drug-resistance and has been identified as a marker of melanoma-initiating cells. Indeed ongoing studies are using ABCB5 to define stem cell populations. However, we show here that the ABCB5 is a direct target for the microphthalmia-associated transcription factor MITF and its expression can be induced by β-catenin, a key activator and co-factor for MITF. Consequently, ABCB5 mRNA expression is primarily associated with melanoma cells exhibiting differentiation markers. The results suggest first that ABCB5 is unlikely to represent a marker of de-differentiated melanoma stem cells, and second that ABCB5 may contribute to the non-genetic drug-resistance associated with highly differentiated melanoma cells. To reconcile the apparently conflicting observations in the field, we propose a model in which ABCB5 may mark a slow-cycling differentiated population of melanoma cells.
    Mesh-Begriff(e) ATP Binding Cassette Transporter, Subfamily B/genetics ; ATP Binding Cassette Transporter, Subfamily B/metabolism ; Base Sequence ; Cell Differentiation ; Gene Expression Regulation, Neoplastic ; Humans ; Melanoma/genetics ; Melanoma/metabolism ; Melanoma/pathology ; Microphthalmia-Associated Transcription Factor/metabolism ; Phenotype ; Skin Neoplasms/genetics ; Skin Neoplasms/metabolism ; Skin Neoplasms/pathology ; beta Catenin/metabolism
    Chemische Substanzen ABCB5 protein, human ; ATP Binding Cassette Transporter, Subfamily B ; Microphthalmia-Associated Transcription Factor ; beta Catenin
    Sprache Englisch
    Erscheinungsdatum 2019-10-28
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2409570-9
    ISSN 1755-148X ; 1600-0749 ; 0893-5785 ; 1755-1471
    ISSN (online) 1755-148X ; 1600-0749
    ISSN 0893-5785 ; 1755-1471
    DOI 10.1111/pcmr.12830
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  9. Artikel: DNA damage-induced interaction between a lineage addiction oncogenic transcription factor and the MRN complex shapes a tissue-specific DNA Damage Response and cancer predisposition.

    Binet, Romuald / Lambert, Jean-Philippe / Tomkova, Marketa / Tischfield, Samuel / Baggiolini, Arianna / Picaud, Sarah / Sarkar, Sovan / Louphrasitthiphol, Pakavarin / Dias, Diogo / Carreira, Suzanne / Humphrey, Timothy / Fillipakopoulos, Panagis / White, Richard / Goding, Colin R

    bioRxiv : the preprint server for biology

    2023  

    Abstract: Since genome instability can drive cancer initiation and progression, cells have evolved highly effective and ubiquitous DNA Damage Response (DDR) programs. However, some cells, in skin for example, are normally exposed to high levels of DNA damaging ... ...

    Abstract Since genome instability can drive cancer initiation and progression, cells have evolved highly effective and ubiquitous DNA Damage Response (DDR) programs. However, some cells, in skin for example, are normally exposed to high levels of DNA damaging agents. Whether such high-risk cells possess lineage-specific mechanisms that tailor DNA repair to the tissue remains largely unknown. Here we show, using melanoma as a model, that the microphthalmia-associated transcription factor MITF, a lineage addition oncogene that coordinates many aspects of melanocyte and melanoma biology, plays a non-transcriptional role in shaping the DDR. On exposure to DNA damaging agents, MITF is phosphorylated by ATM/DNA-PKcs, and unexpectedly its interactome is dramatically remodelled; most transcription (co)factors dissociate, and instead MITF interacts with the MRE11-RAD50-NBS1 (MRN) complex. Consequently, cells with high MITF levels accumulate stalled replication forks, and display defects in homologous recombination-mediated repair associated with impaired MRN recruitment to DNA damage. In agreement, high MITF levels are associated with increased SNV burden in melanoma. Significantly, the SUMOylation-defective MITF-E318K melanoma predisposition mutation recapitulates the effects of ATM/DNA-PKcs-phosphorylated MITF. Our data suggest that a non-transcriptional function of a lineage-restricted transcription factor contributes to a tissue-specialised modulation of the DDR that can impact cancer initiation.
    Sprache Englisch
    Erscheinungsdatum 2023-04-21
    Erscheinungsland United States
    Dokumenttyp Preprint
    DOI 10.1101/2023.04.21.537819
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: Single-cell profiling of MC1R-inhibited melanocytes.

    Berns, H Matthew / Watkins-Chow, Dawn E / Lu, Sizhu / Louphrasitthiphol, Pakavarin / Zhang, Tongwu / Brown, Kevin M / Moura-Alves, Pedro / Goding, Colin R / Pavan, William J

    Pigment cell & melanoma research

    2023  Band 37, Heft 2, Seite(n) 291–308

    Abstract: The human red hair color (RHC) trait is caused by increased pheomelanin (red-yellow) and reduced eumelanin (black-brown) pigment in skin and hair due to diminished melanocortin 1 receptor (MC1R) function. In addition, individuals harboring the RHC trait ... ...

    Abstract The human red hair color (RHC) trait is caused by increased pheomelanin (red-yellow) and reduced eumelanin (black-brown) pigment in skin and hair due to diminished melanocortin 1 receptor (MC1R) function. In addition, individuals harboring the RHC trait are predisposed to melanoma development. While MC1R variants have been established as causative of RHC and are a well-defined risk factor for melanoma, it remains unclear mechanistically why decreased MC1R signaling alters pigmentation and increases melanoma susceptibility. Here, we use single-cell RNA sequencing (scRNA-seq) of melanocytes isolated from RHC mouse models to define a MC1R-inhibited Gene Signature (MiGS) comprising a large set of previously unidentified genes which may be implicated in melanogenesis and oncogenic transformation. We show that one of the candidate MiGS genes, TBX3, a well-known anti-senescence transcription factor implicated in melanoma progression, binds both E-box and T-box elements to regulate genes associated with melanogenesis and senescence bypass. Our results provide key insights into further mechanisms by which melanocytes with reduced MC1R signaling may regulate pigmentation and offer new candidates of study toward understanding how individuals with the RHC phenotype are predisposed to melanoma.
    Mesh-Begriff(e) Mice ; Animals ; Humans ; Melanoma/metabolism ; Receptor, Melanocortin, Type 1/genetics ; Receptor, Melanocortin, Type 1/metabolism ; Melanocytes/metabolism ; Pigmentation/genetics ; Gene Expression Regulation ; Hair Color
    Chemische Substanzen Receptor, Melanocortin, Type 1
    Sprache Englisch
    Erscheinungsdatum 2023-11-16
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2409570-9
    ISSN 1755-148X ; 1600-0749 ; 0893-5785 ; 1755-1471
    ISSN (online) 1755-148X ; 1600-0749
    ISSN 0893-5785 ; 1755-1471
    DOI 10.1111/pcmr.13141
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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