Vacancies
in the Microvascular Research Laboratories
The MVRL has currently (as of May 2010) two PhD studentships available.
1. PhD studentship in prostate cancer research
(sponsored by Prostate research campaign)
The Microvascular
Research Laboratories at the University of Bristol are looking to
appoint a PhD student supported by The Prostate Cancer Charity to start
in October 2010. The project is to investigate how mRNA splicing of
vascular growth factors can regulate angiogenesis and disease
progression in prostate cancer. The project will involve cell and
molecular biological techniques, in vivo models of prostate cancer, and
determination of splice factor expression in human prostate cancer
samples. The project will be jointly supervised by Professor David
Bates at the University of Bristol, Mr David Gillatt (prostate cancer
specialist) at North Bristol NHS Trust , and Dr Michael Ladomery
(splicing factor specialist) at the University of the West of England.
We are looking for an enthusiastic, bright, motivated individual
seeking a career in biomedical science, with an emphasis on cancer or
vascular biology. Applicants should have, or expect to have an honours
degree a relevant subject, particularly cancer biology, cell or
molecular biology, physiology, biological or biomedical sciences,
anatomy, zoology or related subjects. Recent and current final
year graduates are eligible. A stipend of £14,000 is available, and
fees are included in the project. This project is only available to
students eligible for home fees. Applications should be sent to
Professor Bates. For further details see www.mvrl.org.
Closing date for applications 1 July 2010.
The
project
Although there
are only 20,000 genes in human DNA, these can generate over one million
different proteins. A great deal of this discrepancy is explained by
the process of alternative messenger RNA splicing, such that each gene
can generate many mRNAs. In 2002 we found that the key protein involved
in providing new blood vessels (angiogenesis) for prostate cancers to
grow has two different forms generated by different splicing of the
mRNA. One form prevents blood vessels from growing (is anti-angiogenic)
and is found in normal but not cancerous prostate. The way that
the cell decides which of these forms to make is through control of
proteins involved in binding to the mRNA, by changing the phosphate
groups on those proteins. We have found the specific protein pathway
that controls splicing using kidney epithelial cells as a model. This
pathway involves two key proteins, called ASF, which binds the mRNA,
and SRPK1 which modifies ASF. Removing either of these proteins from
the cell can increase production of the anti-angiogenic form in kidney
epithelial cells. As we know that in prostate cancer there is a change
in the isoforms from anti-angiogenic to angiogenic, it is likely that
both ASF and SRPK1 are involved (and we have some evidence for this).
We are therefore proposing that removing ASF and SRPK1 from prostate
cancer cells will increase their production of anti-angiogenic
isoforms, so making them less aggressive, grow less quickly and spread
more slowly. As we now have some chemicals that specifically block
these molecules these might be new therapies for prostate cancer, and
we will try and see if these chemicals may be effective in animal
models of prostate cancer.
2. PhD Studentship (sponsored by the MRC)
The
Microvascular Research Laboratories at the University of Bristol are
looking to appoint a PhD student supported by Medical Research Council
to start in October 2010. The project is to investigate how vascular
permeability is regulated by the endothelial surface layer. The project
will involve in vivo models of permeability measurement, and diabetes,
ultrastructural (electron microscopy) studies of capillaries, in vivo
fluorescence microscopy and carbohydrate biochemistry. The project will
be jointly supervised by Dr Andrew Salmon and Professor David Bates at
the University of Bristol. We are looking for an enthusiastic, bright,
motivated individual seeking a career in biomedical science, with an
emphasis on cardiovascular physiology. Applicants should have, or
expect to have an honours degree a relevant subject, particularly
physiology, biological or biomedical sciences, anatomy, zoology or
related subjects. Recent and current final year graduates are
eligible. A stipend at MRC rates is available, and fees are included in
the project. This project is only available to students eligible for
home fees. Applications should be sent to Dr Salmon or Professor Bates.
For further details see www.mvrl.org. Closing
date for applications 1 June 2010.
The
project
Microvascular
disease in type 1 diabetes mellitus (diabetic microangiopathy) causes
the same phenotype (excessive leak) in diverse organs (e.g. kidney,
retina), and therefore a common underlying defect has been proposed.
Capillary hypertension and altered microvessel barrier properties
(permeability coefficients) probably both contribute to excessive leak,
but previous studies have not distinguished between these
possibilities. The endothelial surface layer (ESL) is a 0.5’Äì1¬µm thick
extracellular matrix of proteoglycans, glycosaminoglycans and adsorbed
plasma proteins that lines the luminal aspect of all endothelial cells,
determines permeability coefficients in structurally diverse
microvessels and is altered in individuals with type 1 diabetes and
microalbuminuria. Altered ESL in diabetes may contribute to altered
microvascular permeability coefficients and increased vascular leak in
diabetic microangiopathy, and this project will test that hyothesis by
measuring permeability coefficients and ESL ultrastructure (electron
microscopy) in animal models of diabetes. the project will invovle
direct measurement of microvascular permeability coefficients directly,
using single microvessel cannulation studies of intact microvessels
using confocal microscopy. It will also characterise the structural and
molecular changes that occur in the ESL in diabetes using detailed
analysis of electron micrographs, as well as lectin and antibody
binding studies, and characterise the biochemical changes in
proteoglycans using HPLC. Understanding the precise, functionally
important defects in diabetic microangiopathy will allow us to test
whether restoring the ESL can restore normal microvascular permeability
in diabetic microangiopathy, which may have therapeutic potential.
The environment:
The successful candidates will join a thriving and dynamic
research team consisting of twenty-three members at the University of
Bristol MVRL within the Department of Physiology and Pharmacology. The
team includes pre and postdoctoral researchers, clinical researchers,
PhD students and technicians. We work on many aspects of
microcirculation research with particular emphasis on vascular
endothelial growth factor biology in health and disease. The project
will enable the successful candidate to be able to learn a large
variety of molecular, cell, microscopical and in vivo techniques and
gain a good broad background in the physiology and pathology of cancer
and vascular biology. The facilities in Southwell Street in Bristol are
the highly equipped state of the art integrative Microvascular Research
Laboratories. They receive ongoing support from major medical charities
such as the Wellcome Trust and the British Heart Foundation as well as
the AICR, Cancer Research UK and Diabetes UK, and work with major
pharmaceutical companies such as Novartis and Astra Zeneca. This
position is an excellent opportunity for a budding research scientist
to lay the foundations of a successful career in laboratory based
medical research working at the cutting edge of modern medical science.
This research area will enable the application of basic cell
physiological principles to the vascular biology of prostate cancer.
The MVRL is an extremely exciting laboratory to join and we are looking
for an individual who is bright, motivated, enthusiastic and who wants
to be able to help make breakthroughs in our understanding and
treatment of disease states. The laboratories have facilities for in
vivo and ex vivo cancer biology, biochemistry, immunology, pharmacology
and molecular biology, and excellent microscopy facilities for both
light and electron microscopy.
Training
(a) Subject Specific and Generic Research Training The student will
receive training by the Graduate School of Biomedical Sciences, the
Department, and the MVRL. The GSBS provides training modules in
scientific method, including intellectual property, research ethics,
safety and radiation protection and risk assessment, data handling,
statistical analysis, experimental design, etc. Subject specific
training is also provided within GSBS on specialist practical
approaches (e.g. making and using antibodies, using DNA databases, gene
therapy, transgenic techniques). The GSBS also provides a social
coherence for the 150 postgraduate students in the School. Subject
specific training is provided within individual research groups, and
many generic research skills are also learnt at this level. The student
will be joining an interdisciplinary group of scientists within state
of the art MVRL run by Prof Bates and Prof Harper.
(b). Transferable Skills Training The student will be expected to
present their work at scientific meetings at every opportunity. Oral
skills are developed by presentations at regular in-house laboratory
meetings, ’Äúwork-in-progress’Äù talks to the Department (3 during three
years) and by exposure of students to visiting speakers during
seminars, including the MVRL seminars, weekly Departmental seminar
series, and Oncology seminar series in the Faculty. Students
participate in tutorial and class teaching (~20 hours a year).
University Staff Development (USD) and the Department run seminars to
instruct students in teaching skills. Writing skills are honed by
preparation of articles for publication, and of progress reports at the
end of years 1 and 2. Forward planning and time management are
encouraged by the supervisors, and informally monitored by the
Postgraduate Tutor during yearly meetings. In addition, thesis
preparation, writing for publication, leadership, teamwork and
organisational skills, time management and personal effectiveness are
covered in seminars run by USD. They also hold training days to advise
students in each of the three years of their degree (Planning,
Managing, and Completing your PhD). Acquisition of generic computing
skills occurs within the MVRL, but the Computing Services and USD run
courses and workshops devoted to specific IT skills (such as excel,
word, etc) and use of internet resources.
(c) Monitoring of Progress. The student will have three advisers ’Äì Prof
Bates (principal) Mr Gillatt (secondary clinical), and Dr Ladomery
(secondary, scientific). Overlapping supervision works well in the
MVRL, and ensures that students get a thorough appreciation of the
clinical and specific scientific relevance of their work. Dual
supervision is also necessary due to the multi-disciplinary nature of
the project and commitments of the principal supervisor, to ensure
prompt and regular review and to permit timely trouble-shooting.
Progress is monitored by regular one to one sessions with the
supervisors (every 2-3 weeks for current students in the lab), regular
in-house laboratory meeting presentations, and work-in-progress talks
to the Department. A formal review by the Head of Department and the
Postgraduate Tutor, preceded by preparation of a written report, is
conducted at the end of the 1st and 2nd years. Over the last 5 years
the Department of Physiology and Pharmacology has higher than 95% of
students completing their studies within four years, and the MVRL has
graduated 14/14 students with an average time to submission of 37
months. Further details may be found at the MVRL home page
Details of the Department and working environment are
available at http://www.bristol.ac.uk/phys-pharm/ and http://www.bris.
ac.uk/ respectively.
Applications
To submit an application, please send a CV and application
form to Professor Bates
(PhD 1), or Dr Salmon (PhD
2)
Bristol University is a well established and respected research
University.
For details of the University check out the University home
page. Bristol is one of the ten largest British cities, and is
situated
in the south west of England, 90 minutes from London, close to the
beautiful
West Country, Somerset, Wales and many other areas of interest. For
more
information try the City of Bristol home
page
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Bates' Home Page
Last updated: 027/7/99 14:49
Dr D.O. Bates