David S. Hill

ORCID: 0000-0002-6080-0603
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About
Contact & Profiles
Research Areas
  • Melanoma and MAPK Pathways
  • Autophagy in Disease and Therapy
  • Cell Adhesion Molecules Research
  • Endoplasmic Reticulum Stress and Disease
  • Cutaneous Melanoma Detection and Management
  • Writing and Handwriting Education
  • Protein Degradation and Inhibitors
  • RNA Interference and Gene Delivery
  • Cellular Mechanics and Interactions
  • Education and Technology Integration
  • RNA regulation and disease
  • 3D Printing in Biomedical Research
  • Reading and Literacy Development
  • Cancer Research and Treatments
  • Cognitive and developmental aspects of mathematical skills
  • Computational Drug Discovery Methods
  • Immunotherapy and Immune Responses
  • Cancer Cells and Metastasis
  • Nanoplatforms for cancer theranostics
  • Viral Infectious Diseases and Gene Expression in Insects
  • Cell Image Analysis Techniques
  • Cancer, Hypoxia, and Metabolism
  • Traffic and Road Safety
  • Disability Education and Employment
  • Educational Assessment and Improvement

University of Sunderland
2020-2025

Newcastle University
2010-2021

Centenary Institute
2014-2021

The University of Sydney
2014-2020

Canadian Sport Centre Pacific
2019

Amgen (United States)
2017

McMaster University
2015

The Ohio State University
1979-2014

Weatherford College
2013

Cellular Therapeutics (United Kingdom)
2009

Abstract Exploiting vulnerabilities in the intracellular signaling pathways of tumor cells is a key strategy for development new drugs. The activation cellular stress responses mediated by endoplasmic reticulum (ER) allows cancer to survive outside their normal environment. Many proteins that protect against ER are active as protein disulfide isomerases (PDI) and aim this study was test hypothesis apoptosis response can be increased inhibiting PDI activity. We show novel chemotherapeutic...

10.1158/0008-5472.can-08-0035 article EN Cancer Research 2008-07-01

Solid cancers are composed of heterogeneous zones containing proliferating and quiescent cells. Despite considerable insight into the molecular mechanisms underlying aberrant cell cycle progression, there is limited understanding relationship between on one side, melanoma motility, invasion, drug sensitivity other side. Utilizing fluorescent ubiquitination-based indicator (FUCCI) to longitudinally monitor proliferation migration cells in 3D culture vivo, we found that invading actively,...

10.1111/pcmr.12274 article EN Pigment Cell & Melanoma Research 2014-06-05

Endoplasmic reticulum (ER) malfunction, leading to ER stress, can be a consequence of genome instability and hypoxic tissue environments. Cancer cells survive by acquiring or enhancing survival mechanisms counter the effects stress these homeostatic responses may new therapeutic targets. Understanding links between apoptosis approached using drugs specifically target in cancer cells. The retinoid analogue fenretinide [N-(4-hydroxyphenyl) retinamide] is preventive chemotherapeutic drug, that...

10.1038/sj.bjc.6603672 article EN cc-by-nc-sa British Journal of Cancer 2007-03-13

Metastatic melanoma remains incurable, emphasizing the acute need for improved research models to investigate underlying biologic mechanisms mediating tumor invasion and metastasis, develop more effective targeted therapies improve clinical outcome. Available animal of do not accurately reflect human disease current in vitro skin equivalent incorporating cells are fully representative microenvironment. We have developed a robust reproducible, humanized three-dimensional (3D) comprising...

10.1158/1535-7163.mct-15-0394 article EN Molecular Cancer Therapeutics 2015-09-02

Abstract Purpose: Metastatic melanoma is characterized by extremely poor survival rates and hence novel therapies are urgently required. The ability of many anticancer drugs to activate autophagy, a lysosomal-mediated catabolic process which usually promotes cell survival, suggests targeting the autophagy pathway may be means augment therapy. Experimental Design: Autophagy apoptosis were assessed in vitro human lines response clinically achievable concentrations endoplasmic reticulum (ER)...

10.1158/1078-0432.ccr-10-3003 article EN Clinical Cancer Research 2011-01-27

Summary Melanoma drug resistance is often attributed to abrogation of the intrinsic apoptosis pathway. Targeting regulators thus considered a promising approach sensitizing melanomas treatment. The development small‐molecule inhibitors that mimic natural antagonists either antiapoptotic members BCL‐2 family or inhibitor proteins (IAPs), known as BH3‐ SMAC‐mimetics, respectively, are helping us understand mechanisms behind apoptotic resistance. Studies using BH3‐mimetics indicate protein...

10.1111/pcmr.12242 article EN Pigment Cell & Melanoma Research 2014-03-21

Abstract Purpose: Single-agent chemotherapy is largely the treatment of choice for systemic therapy metastatic melanoma, but survival rates are low, and novel adjuvant therapies urgently required. Endoplasmic reticulum (ER) stress a potential therapeutic target, two relatively new drugs, fenretinide bortezomib (Velcade), each acting via different cellular mechanisms, induce ER leading to apoptosis in melanoma cells. The aim this study was test hypothesis that cells may be increased by...

10.1158/1078-0432.ccr-08-2150 article EN Clinical Cancer Research 2009-02-15

<ns5:p>Cancer metastasis is the most important prognostic factor determining patient survival, but currently there are very few drugs or therapies that specifically inhibit invasion and of cancer cells. Currently, human largely studied using transgenic immunocompromised mouse xenograft models, which useful for analysing end-point tumour growth unable to accurately reliably monitor <ns5:italic>in vivo</ns5:italic> invasion, intravasation, extravasation secondary formation Furthermore, limits...

10.12688/f1000research.16659.2 preprint EN cc-by F1000Research 2018-12-20

Doxorubicin (DOX), a potent chemotherapeutic, is commonly prescribed treatment for breast cancer, but limited by severe organ toxicity. Therefore, more effective therapies are required. This study developed novel DOX-liposomes (LipDOX-ALA-AA) co-loaded with alpha-lipoic-acid (ALA) and ascorbic-acid (AA) to enhance antineoplastic effect. Liposomes were fabricated using microfluidic-system DSPClipid:Cholesterol ratio of 1:1 flow rate 5:1. investigated various-techniques such-as dynamic light...

10.1080/02652048.2025.2487031 article EN Journal of Microencapsulation 2025-04-04

Targeting endoplasmic reticulum stress-induced apoptosis may offer an alternative therapeutic strategy for metastatic melanoma. Fenretinide and bortezomib induce of melanoma cells but their efficacy be hindered by the unfolded protein response, which promotes survival ameliorating stress. The aim this study was to test hypothesis that inhibition GRP78, a vital response mediator, increases cell death in combination with stress-inducing agents. Down-regulation GRP78 small-interfering RNA...

10.1111/j.1755-148x.2010.00731.x article EN Pigment Cell & Melanoma Research 2010-06-14

Abstract The B cl‐2 family member M cl‐1 is essential for melanoma survival; however, the influence of oncogenic BRAF signalling remains elusive. In this study, splice variant expression was determined in a panel cell lines relation to mutational status. L m RNA increased cells compared with primary melanocytes significantly and protein observed V600E mutant cells. Although no change cl‐1S observed, S also Additionally, while over‐expression both expression, inhibition hyperactive resulted...

10.1111/exd.12254 article EN Experimental Dermatology 2013-10-12

Patients with malignant melanoma often relapse after treatment BRAF and/or mitogen‐activated protein kinase (MEK) inhibitors (MEKi) owing to development of drug resistance. To establish the temporal pattern CD271 regulation during resistance by trametinib, and determine association between trametinib induction prosurvival autophagy. Immunohistochemistry for p62 was performed on human naevi primary tumours. Western blotting used analyse expression CD271, LC3 in subpopulations. Flow cytometry...

10.1111/bjd.17333 article EN cc-by British Journal of Dermatology 2018-10-19

10.1037/h0073871 article EN Journal of Educational Psychology 1914-09-01

Presently, there are numerous structural classes of cannabinoid receptor agonists, all which require solubilization for experimental purposes. One strategy solubilizing water-insoluble tetrahydrocannabinols is conversion the phenolic hydroxyl to a morpholinobutyryloxy substituent. The hydrochloride salts these analogs water-soluble and active in vivo when administered saline. present investigation demonstrated that substituted butyryloxy esters highly potent. substitutions include...

10.1124/jpet.106.104109 article EN Journal of Pharmacology and Experimental Therapeutics 2006-06-06

<ns4:p>Cancer metastasis is the most important prognostic factor determining patient survival, but currently there are very few drugs or therapies that specifically inhibit invasion and of cancer cells. Currently, human largely studied using transgenic immunocompromised mouse xenograft models, which useful for analysing end-point tumour growth unable to accurately reliably monitor <ns4:italic>in vivo</ns4:italic> invasion, intravasation, extravasation secondary formation Furthermore, limits...

10.12688/f1000research.16659.1 preprint EN cc-by F1000Research 2018-10-22

Abstract Phenotypic heterogeneity of cancer cells plays a critical role in shaping treatment response. This type is organized spatially with specific phenotypes, such as sharply demarcated clusters proliferating and cell cycle-arrested cells, predominating within discrete domains tumor. What determines the occurrence tumor phenotypes distinct microdomains solid cancers poorly understood. Here, we show that melanoma spatial organization phenotypic dictated by expression activity MITF. We...

10.1101/2020.06.09.141747 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2020-06-11

AbstractA comparison was made of the accuracy transitional cursive letter strokes on large-spaced paper and normal-spaced second third grade students. Results indicate that both students produce more accurate with (space size 1.11 cm). Third graders produced significantly correct than graders. These data revealed no significant differences between formation girls boys. The results support continued use writing letters.

10.1080/00220671.1983.10885456 article EN The Journal of Educational Research 2014-12-06

For patients with early American Joint Committee on Cancer (AJCC)-stage melanoma the combined loss of autophagy regulatory protein AMBRA1 and terminal differentiation marker loricrin in peritumoral epidermis is associated a significantly increased risk metastasis.

10.1111/bjd.20889 article EN cc-by British Journal of Dermatology 2021-11-13

ABSTRACT Retinoic acid (RA) exerts a variety of effects on the regenerating urodele limb including positional respecification blastema. The major RA receptor expressed in newt and blastema is 1 isoform and, order to detect this context, we have made five affinity-purified antibodies against fusion proteins peptides from non-overlapping regions molecule. These been evaluated by reaction with transfected COS-7 cells, cells culture tissue sections. most informative were RP6, directed N-terminal...

10.1242/dev.117.3.937 article EN Development 1993-03-01

10.1037/h0075373 article EN Psychological Bulletin 1918-04-01
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