Dear all
If you like intravital microscopy and are looking for a job in Stockholm, check out this job ad at Stockholm University!
Images
One-step non-toxic clearing protocol
Do you know that clearing is not just about light sheet microscopy? Even if you have done your job well and your sample is directly on the coverslip (not on the slide), as soon as your sample is thicker than 10 um (1 cell diameter), you will see the effect of the refraction index mismatch.
What is that? Your sample and the mounting medium around it have a certain refraction index (or likely several). The objective you are using is designed for a certain refraction index (e.g. air, water or oil). If these refraction indices do not match what happens? as soon as you image a tiny bit away from the coverslip, the sample will look elongated, the intensity and contrast will drop very fast.
Sounds familiar? If yes, changing your mounting medium to match the objective will solve the problem. It works for light sheet but it also works for wide field or confocal imaging! Just change your mounting medium and you will see an enormous difference!
Here is an article describing a one-step clearing protocol. This basically is about using a different mounting medium. Easy, cheap and non-toxic! Give it a try!
Have a look at this post for more info.
Broadcasted lectures from the LCI microscopy course and private demos of light sheet and cameras
Our course starts tomorrow! 😀
Target audience:
The aim for this course is to improve the microscopy skills of students and researchers who have already used a microscope to acquire digital images of fluorescent samples and want to improve their skills.
Registrations are closed but all lectures are open to everyone without registration.
- The schedule and details of the venue are here.
- All lectures are also available online live. The link and instructions to watch are here.
- Make sure you check the schedule in case of last minutes changes.
If you are in Sweden, you are welcome to try some of the equipment on demo with your own sample.
To book at timeslot, please contact the responsible person directly.
- Light sheet microscope from M2Lasers: Valentina Loschiavo Valentina.Loschiavo(at)m2lasers.com
- Fast imaging of large sample
- Overview function to navigate in the sample and find the region of interest
- 800x800um field of view with 1um min resolution
- Any immersion media
- Sample size up to centimetres
- Wide Field microscope from Nikon with 3 different Andor cameras: Oliver Garner (oliver.garner(at)bergmanlabora.se)
- Nikon Ti2 microscope with 4 times larger field of view
- A front illuminated sCMOS camera: Good sensitivity and resolution, great speed, but a greyish background (Andor Zyla 4.2)
- A back-illuminated EM-CCD camera: highly sensitive camera with very dark background, but lower resolution and lower speed (Andor 897U)
- A back-illuminated sCMOS camera: same sensitivity and low background as an EM-CCD but better resolution and speed (Andor Sona)
The antibody validation nightmare
Ever wondered if that antibody you used throughout your whole PhD was actually also binding to something else than its supposed target protein?
Antibody validation in tissue staining is a very difficult task!
Here is a great step-by-step validation protocol published by EuroMabNet, a network of scientists who try to improve antibody validation.
And this paper gives a useful flow chart for antibody validation.
And here is the 5 pillars of antibody validation paper which explains what can be done to validate antibodies.
Know your RRid!
Imagine starting a study about some cool protein.
You find some useful articles on Google Scholar. In one paper, an antibody is mentioned. The name of the company that sold it to the authors is mentioned in the Material and Method but unfortunately that company has closed down or has been swallowed by one of the Pharma giants so you cannot order. Then you realize that the company was not producing any antibodies anyway, they were buying it from another company so there is no way to trace and buy the same antibody. Nightmare…
Then imagine that instead, the paper mentions the RRid number for that antibody. You do not know about what that is but you check and find this paper that explains it all.
Now suddenly, not only you can find on the Scicrunch website which company produces this antibody and which resells it so you can buy it, but you can also search pubmed for the RRid and find all the articles that mention it, opening your eyes to lots of results about your protein that have been published specifically with using that antibody. Now you can also check if the antibody gives consistent results!
And imagine being to do this for your favorite mouse model as well. See all publications that have mentioned your mouse RRId!
But it relies on you writing the RRid of your antibody or mouse in your next publication so think about it! 😀
Transfecting hard-to-transfect cells
Here you can see a nice film of a beating cardiomyocyte.
It was transfected using Fuse-it vesicles full of the mRNA of LifeAct-tagGFP2. According to Ibidi, it also work well with primary cells which are typically difficult to transfect.
RNA-based transfection seems to be gaining speed compared to classical transfections using DNA.
If you try it, leave some comments here to tell us how it worked for you! 🙂
Great video Microcourses about microscopy
Jennifer Watson’s Microcourses channel on You Tube is really recommended to anyone who uses a microscope.
Short targetted videos that will boil down the principles of light microscopy for biologist and help you understand what you are doing.
There are a few series, each of them with a few videos and the collection is constantly growing. Remember to subscribe so you get to know when they post a new one.
Microscopy job in Manchester
Senior Experimental Officer (Bioimaging / Image Analysis) The University of Manchester, UK
The University of Manchester Bioimaging Core Facility is recruiting an image processing/analysis Senior Experimental Officer. This position is initially for 2 years, but with a view to becoming a permanent position. Manchester is a great place to live and work and you’ll be part of a team supporting over 20 microscope systems and 200 PIs. We run a mix of commercial, open source and bespoke software and the successful candidate would be responsible for developing, applying and teaching these tools to the Facility users. You don’t need to be from an academic background, we’d be very keen to recruit someone currently working within the commercial side of image analysis and a PhD is not essential – we’re looking for the right person not the right qualifications.
Due to the demand for advanced image processing and data analysis, a new position has been created to support the users of the Bioimaging Facility in the Faculty of Biology, Medicine and Health.
You will work as part of the Bioimaging team, led by Dr Peter March, but you will be responsible for developing the image processing capabilities of the Facility. Combining both commercial packages and your own bespoke scripted solutions you will provide analysis pipelines to support users who have acquired large multi-dimensional datasets using the Bioimaging Facility microscopes. You will have multiple projects to manage simultaneously and so excellent project management skills are also required.
You will have completed a PhD in science, mathematics, computer science or a relevant discipline, or equivalent experience. A knowledge of cell biology is not essential, but you must have proven experience in developing analysis pipelines and the ability to write custom scripts. Excellent communication and interpersonal skills are also required.
As an equal opportunities employer we welcome applicants from all sections of the community regardless of gender, ethnicity, disability, sexual orientation and transgender status. All appointments are made on merit.
Please note that we are unable to respond to enquiries, accept CVs or applications from Recruitment Agencies.
Enquiries about the vacancy, shortlisting and interviews:
Name: Dr Peter March
Email: P.March@amcnhester.ac.uk Tel: 0044 161 275 1571 or 0044 7747 118 447
General enquiries:
Email: hrservices@manchester.ac.uk Tel: 0161 275 4499
Technical support:
Email: universityofmanchester@helpmeapply.co.uk Tel: 0161 850 2004
This vacancy will close for applications at midnight on the closing date.
Closing date: 30/01/2020
Salary: £41,526 to £51,034 per annum according to relevant experience.
Employment type: Fixed Term
Department: Biology, Medicine & Health
Hours per week: Full time
Contract Duration: From January 2020 until 31 December 2022 Job reference: BM&H-14959
Fluorophores that blink for STORM without any special buffer
Sounds good! No more buffer that stops working after one hour of imaging!
This company sells SaraFluor650 secondary antibodies. This fluorophore seems to be a natural blinker which does not need to reducing environment. Apparently it doesn’t need very bright lasers either!
Apparently they have also developed a green variant. So you can run 2-colour direct STORM on your favorite TIRF system! 😀
They also sell pH sensors and more so check their website and if you try, write a comment to let us know how things worked!
Microscopy facility job in Hungary
Dear Colleagues!
I would like to draw your attention to the open position at the Hungarian Center of Excellence for Molecular Medicine.
Best wishes,
Jozsef
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Advanced Core Facilities at HCEMM
High-quality molecular medicine-oriented research activities at the Hungarian Center of Excellence for Molecular Medicine (HCEMM) are supported by a matrix of advanced core facilities (ACFs). In the premises of the Hungarian Research Institutions, three ACFs are currently being set-up:
- Functional Cell Biology and Immunology ACF (University of Szeged)
- In vivo Imaging ACF (Semmelweis University, Budapest)
- Single-Cell Omics ACF (Biological Research Center, Szeged)
The Call
The Project Steering Committee of the HCEMM project hereby announces a call for excellent, professional “Heads of Advanced Core Facilities”.
We are searching for Heads for each of the above ACFs who operate, manage, supervise, and develop the respective HCEMM AFC. We seek dynamic and interactive individuals with an excellent professional track record and demonstrated experience and interest in organizing and spearheading the ACF.
HCEMM is an inclusive, equal opportunity employer offering attractive working conditions and benefits appropriate to a molecular medicine research organization. Female candidates are strongly encouraged to apply.
An initial contract of 5 years will be offered to the successful candidates; this is foreseen to be extended to a maximum of 9 years, subject to an external, independent, international review. Successful candidates will receive an attractive remuneration package and an opportunity to recruit two technicians for each ACF. Importantly, the selected ACF Heads will be constantly helped and trained by heads and managers of the state-of-the-art system of Core Facilities at EMBL.
Technical notes
Please visit https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hcemm.eu&data=02%7C01%7Csylvie.le.guyader%40KI.SE%7C096431407c66429c33c408d77ed8c1e5%7Cbff7eef1cf4b4f32be3da1dda043c05d%7C0%7C0%7C637117341763082188&sdata=AWRzMmDqkw%2B6Qtuctsvw1qmenkmrhiOUEoijTilFKFs%3D&reserved=0 for more details related to HCEMM (Synopsis of HCEMM), to the positions (Description of positions) and to the ACFs (Technical description of the ACFs) as well as the Evaluation process & Criteria.
Applicants should submit a cover letter, a CV, a detailed presentation of the professional experience, and a concise description of research interest and plans, all edited as a single PDF file, to career@hcemm.eu by January 17, 2020. Please also arrange for 3 letters of recommendation to be also emailed to career@hcemm.eu by the same deadline.
József Maléth M.D., Ph.D.
Principal Investigator, Research associate
MTA-SZTE Momentum Epithel Cell Signalling and Secretion Research Group University of Szeged, First Department of Medicine Koranyi alley 8-10, Szeged, H-6720, Hungary
Tel: +36-62-545-201
Cell: +36-70-4166500
E-mail: jozsefmaleth1@gmail.com;