Alex Y. Kreins

@alexyema.bsky.social

Wellcome Trust career development fellow treating #IEI patients (athymia/SCID) @GreatOrmondSt & translational research @uclchildhealth to improve their outcomes! https://profiles.ucl.ac.uk/70769-alexandra-kreins

Delighted to be speaking at the Novo Nordisk Symposium: Inborn Errors of Immunity, celebrating Jean-Laurent Casanova (my PhD advisor) and his landmark contributions. Join us Sept 24 at Institut Imagine, Paris. Free to attend! Details & registration 👇 #NNFPrize #Immunology

Casanova Lab@casanovalab.bsky.social · last yr.

1/ Join us on 24 Sept 2025 at the @institutimagine.bsky.social in Paris for the Novo Nordisk Prize Symposium: Inborn Errors of Immunity. Registration is free at: my.weezevent.com/novo-nordisk...

The #IBEX Knowledge-Base is an exciting initiative promoting open science and collaboration for immunofluorescence multiplexed imaging! New to this wonderful community and excited for the research ahead! Find out more 👇🏾

eLife@elife.bsky.social · last yr.

The IBEX Knowledge-Base is an important tool that will enhance scientific collaboration by providing a centralised, community-driven resource for immunofluorescence imaging and reagent validation. buff.ly/BF4WO38

Schematic overview of IBEX KB design and contents.

Our thymus, a critical source and trainer of T cells, involutes with aging. 2 new studies find a growth factor (FGF21) that delays involution (in mouse models) and may be a way to rejuvenate our immune system and promote healthy aging in the future.

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Delighted & proud that this wonderful collection in @jem.org includes our study characterising dominant negative variants in ITPR3 in syndromic combined immunodeficiency patients due to calcium channel leakiness of the IP3 receptor, causing ER Ca2+ store depletion and impaired Ca2+ T cell dynamics.

Journal of Experimental Medicine@jem.org · 2y ago

Check out our new collection on lymphocyte cell differentiation in specific microenvironments and innate immune memory, accompanying the upcoming @keystonesymposia.bsky.social joint meetings on these topics 👉 https://buff.ly/3CgbKL7 #KSTCells25 #KSInnateImmune25

Auschwitz was at the end of a long process. It did not start from gas chambers. This hatred was gradually developed by humans. From ideas, words, stereotypes & prejudice through legal exclusion, dehumanization & escalating violence... to systematic and industrial murder. Auschwitz took time.

A bird's-eye view of a former Auschwitz II-Birkenau camp showing a wide dirt pathway flanked by parallel rows of barbed-wire fences. Groups of visitors walk along the path, surrounded by the remnants of brick structures and barracks, now reduced to foundations. Green grass contrasts with the somber history of the site, as the path leads toward a guard tower in the distance.

On behalf of @ESIDsociety clinical working party, we have written guidelines with clinical practice recommendations focused on the diagnosis, investigation, risk stratification, and management of congenital #athymia with the aim to improve patient outcomes. Out now in @jacionline: bit.ly/4g4qkUs

European Society for Immunodeficiencies guidelines for the management of patients with congenital athymia

Congenital athymia is a life-limiting disorder due to rare inborn errors of immunity causing impaired thymus organogenesis or abnormal thymic stromal …

bit.ly

last 2 days to apply! : We have a fully funded #PhD #studentship available in my lab for Oct25 @UCLchildhealth. Project will research new treatments/targets for airway inflammation during viral infection using complex in vitro models. Deadline 13th Dec Apply here: forms.office.com/pages/respon...

UCL – University College London

UCL is consistently ranked as one of the top ten universities in the world (QS World University Rankings 2010-2022) and is No.2 in the UK for research power (Research Excellence Framework 2021).

ucl.ac.uk

🚨Out now in Nature: Our spatial atlas of the developing thymus nature.com/articles/s41... Together with the labs of Sarah Teichmann, Ron Germain & John Marioni we present insights into the establishment of the thymic organ structure in pre- and postnatal life through a new spatial mapping approach.

A spatial human thymus cell atlas mapped to a continuous tissue axis - Nature

A quantitative morphological framework for the human thymus reveals the establishment of the lobular cytokine network, canonical thymocyte trajectories and thymic epithelial cell distributions in...

nature.com

I made a starter pack for those of us interested in or working on T cells. Let me know if you would like to be added or know somebody that should be added. Looking forward to scientific discussions and updates on our favorite immune cell type!

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