Jeroen Guikema
@jeroenguikema.bsky.social
Molecular biologist. 🧬Principal investigator at University of Amsterdam 🇳🇱 Research interests: immune repertoire diversification mechanisms, oncogenic signaling, B-cells, multiple myeloma #medsky #scisky #academicsky #biosky
Reposted by Jeroen Guikema
Laat de kracht van muziek werken in positieve zin. Een AI gegenereerd anti-AZC nummer is megapopulair.
Een tegenbeweging probeert nu het nummer Vrijheid, gelijkheid, zusterschap van Sophie Straat hoger te krijgen in de streaminglijsten. Helpen jullie mee? open.spotify.com/track/4EIM7Q...
Een tegenbeweging probeert nu het nummer Vrijheid, gelijkheid, zusterschap van Sophie Straat hoger te krijgen in de streaminglijsten. Helpen jullie mee? open.spotify.com/track/4EIM7Q...
Vrijheid, Gelijkheid, Zusterschap
open.spotify.com
November 7, 2025 at 4:17 PM
Laat de kracht van muziek werken in positieve zin. Een AI gegenereerd anti-AZC nummer is megapopulair.
Een tegenbeweging probeert nu het nummer Vrijheid, gelijkheid, zusterschap van Sophie Straat hoger te krijgen in de streaminglijsten. Helpen jullie mee? open.spotify.com/track/4EIM7Q...
Een tegenbeweging probeert nu het nummer Vrijheid, gelijkheid, zusterschap van Sophie Straat hoger te krijgen in de streaminglijsten. Helpen jullie mee? open.spotify.com/track/4EIM7Q...
Reposted by Jeroen Guikema
Foreign Scholars Skip US Conferences
“I don’t agree with the politicization of scientific funding, the destruction of data collection and openness... and I feel like traveling to America at this point is a partial endorsement of what’s going on,” Liston said.
www.insidehighered.com/news/faculty...
“I don’t agree with the politicization of scientific funding, the destruction of data collection and openness... and I feel like traveling to America at this point is a partial endorsement of what’s going on,” Liston said.
www.insidehighered.com/news/faculty...
Cautious or Protesting, Foreign Scholars Skip U.S. Conferences
As President Donald Trump deploys National Guard troops to American cities and ICE arrests pick up, some international scholars are opting out of U.S. travel.
www.insidehighered.com
November 4, 2025 at 5:30 PM
Foreign Scholars Skip US Conferences
“I don’t agree with the politicization of scientific funding, the destruction of data collection and openness... and I feel like traveling to America at this point is a partial endorsement of what’s going on,” Liston said.
www.insidehighered.com/news/faculty...
“I don’t agree with the politicization of scientific funding, the destruction of data collection and openness... and I feel like traveling to America at this point is a partial endorsement of what’s going on,” Liston said.
www.insidehighered.com/news/faculty...
Reposted by Jeroen Guikema
Funders must recognise that great discoveries often come from studies that seeks to advance knowledge for its own sake
go.nature.com/47zrzYZ
go.nature.com/47zrzYZ
From MRI to Ozempic: breakthroughs that show why fundamental research must be protected
In these financially straitened times, funders must recognize that great discoveries often arise from work that was looking for something completely different.
go.nature.com
October 29, 2025 at 12:11 PM
Funders must recognise that great discoveries often come from studies that seeks to advance knowledge for its own sake
go.nature.com/47zrzYZ
go.nature.com/47zrzYZ
Reposted by Jeroen Guikema
Scientists themselves determine what is valued within science. Yet we act as if beholden to external managers, bean-counters who confuse the production of papers with scientific progress.
We don't have to find better ways to navigate the prison of metrics-driven scientific assessment.
We don't have to find better ways to navigate the prison of metrics-driven scientific assessment.
October 25, 2025 at 9:35 PM
Scientists themselves determine what is valued within science. Yet we act as if beholden to external managers, bean-counters who confuse the production of papers with scientific progress.
We don't have to find better ways to navigate the prison of metrics-driven scientific assessment.
We don't have to find better ways to navigate the prison of metrics-driven scientific assessment.
Reposted by Jeroen Guikema
‼️Our latest study, “Loss of STAT3 in acute myeloid leukemia favors tissue infiltration linked to CXCR4 signaling,” is now out in @bloodneoplasia.bsky.social
#AML #STAT3 #CXCR4 #MLL-AF9
www.sciencedirect.com/science/arti...
#AML #STAT3 #CXCR4 #MLL-AF9
www.sciencedirect.com/science/arti...
October 15, 2025 at 2:53 PM
‼️Our latest study, “Loss of STAT3 in acute myeloid leukemia favors tissue infiltration linked to CXCR4 signaling,” is now out in @bloodneoplasia.bsky.social
#AML #STAT3 #CXCR4 #MLL-AF9
www.sciencedirect.com/science/arti...
#AML #STAT3 #CXCR4 #MLL-AF9
www.sciencedirect.com/science/arti...
Reposted by Jeroen Guikema
"Surprisingly, individual cells—from splenic lymphocytes to pluripotent stem cells—transcribe only ∼0.02%–3.1% of the genome, versus >80% in bulk, revealing limited genome engagement and profound cell-type and cell-to-cell heterogeneity"
www.cell.com/cell/abstrac...
www.cell.com/cell/abstrac...
Single-cell nascent transcription reveals sparse genome usage and plasticity
scFLUENT-seq is a single-cell method that sensitively captures nascent nuclear transcriptomes
to reveal mRNA and ncRNA dynamics, heterogeneity across chromatin compartments, and
transcriptional divers...
www.cell.com
October 7, 2025 at 12:23 PM
"Surprisingly, individual cells—from splenic lymphocytes to pluripotent stem cells—transcribe only ∼0.02%–3.1% of the genome, versus >80% in bulk, revealing limited genome engagement and profound cell-type and cell-to-cell heterogeneity"
www.cell.com/cell/abstrac...
www.cell.com/cell/abstrac...
Reposted by Jeroen Guikema
Do you know how badly things have to be going in America for us to be owned this hard by the Dutch? The Dutch of all people
September 19, 2025 at 7:01 PM
Do you know how badly things have to be going in America for us to be owned this hard by the Dutch? The Dutch of all people
Reposted by Jeroen Guikema
Thrilled to share our lab’s latest work in JBC! 🎉 We uncovered a critical role for APE1 Asn174 in stabilizing AP-sites using mutagenesis, enzymology, crystallography, and MD-simulations. Congrats to Kaitlin Dehart and all the co-authors! Check it out: www.jbc.org/article/S002...
APE1 active site residue Asn174 stabilizes the AP-site and is essential for catalysis
Apurinic/Apyrimidinic (AP)-sites are common and highly mutagenic DNA lesions that
can arise spontaneously or as intermediates during Base Excision Repair (BER). The
enzyme apurinic/apyrimidinic endonu...
www.jbc.org
September 5, 2025 at 4:44 PM
Thrilled to share our lab’s latest work in JBC! 🎉 We uncovered a critical role for APE1 Asn174 in stabilizing AP-sites using mutagenesis, enzymology, crystallography, and MD-simulations. Congrats to Kaitlin Dehart and all the co-authors! Check it out: www.jbc.org/article/S002...
Reposted by Jeroen Guikema
Reposted by Jeroen Guikema
Excised DNA circles from V(D)J recombination promote relapsed leukaemia
Cutting your own DNA has a risk of leukaemia.
www.nature.com/artic...
1/7
Cutting your own DNA has a risk of leukaemia.
www.nature.com/artic...
1/7
Excised DNA circles from V(D)J recombination promote relapsed leukaemia
Nature - Excised signal circles are circular DNA by-products of V(D)J recombination that form a complex with the V(D)J recombinase, and when increased in abundance, result in increased mutagenesis,...
www.nature.com
August 7, 2025 at 9:46 AM
Excised DNA circles from V(D)J recombination promote relapsed leukaemia
Cutting your own DNA has a risk of leukaemia.
www.nature.com/artic...
1/7
Cutting your own DNA has a risk of leukaemia.
www.nature.com/artic...
1/7
Reposted by Jeroen Guikema
Pospelova et al. present a comparative analysis of full-length sequences of IG/TR loci across 46 mammalian species, demonstrating these as rapidly evolving genomic regions, with implications for immunogenomics.
🔗 doi.org/10.1093/molbev/msaf152
#evobio #molbio
🔗 doi.org/10.1093/molbev/msaf152
#evobio #molbio
July 30, 2025 at 10:36 PM
Pospelova et al. present a comparative analysis of full-length sequences of IG/TR loci across 46 mammalian species, demonstrating these as rapidly evolving genomic regions, with implications for immunogenomics.
🔗 doi.org/10.1093/molbev/msaf152
#evobio #molbio
🔗 doi.org/10.1093/molbev/msaf152
#evobio #molbio
Reposted by Jeroen Guikema
Respiratory viral infections awaken metastatic breast cancer cells in lungs
Note: This concerns many infections (inflammation, trauma), including respiratory viruses and is NOT specific for SARS-CoV-2 as some claim.
www.nature.com/artic...
1/9
Note: This concerns many infections (inflammation, trauma), including respiratory viruses and is NOT specific for SARS-CoV-2 as some claim.
www.nature.com/artic...
1/9
Respiratory viral infections awaken metastatic breast cancer cells in lungs
Nature - Mouse models show that respiratory infections from viruses such as influenza and SARS-CoV-2 can trigger metastasis of dormant breast cancer cells in the lungs, a finding supported by...
www.nature.com
July 31, 2025 at 9:33 AM
Respiratory viral infections awaken metastatic breast cancer cells in lungs
Note: This concerns many infections (inflammation, trauma), including respiratory viruses and is NOT specific for SARS-CoV-2 as some claim.
www.nature.com/artic...
1/9
Note: This concerns many infections (inflammation, trauma), including respiratory viruses and is NOT specific for SARS-CoV-2 as some claim.
www.nature.com/artic...
1/9
Reposted by Jeroen Guikema
Using barcodes 📊 to track cancer 💊 resistance evolution: is it clonal selection or plasticity? @fwhiting.bsky.social knows! His new "Evolutionary Informed Resistance Assays" (EIRAs) framework infers resistance evolution dynamics from barcode diversity data. www.nature.com/articles/s41... @icr.ac.uk
Quantitative measurement of phenotype dynamics during cancer drug resistance evolution using genetic barcoding - Nature Communications
Understanding the dynamics of how drug resistance originates in cancer remains crucial, but it is not possible to observe them directly. Here, the authors construct a mathematical framework to infer d...
www.nature.com
June 20, 2025 at 12:49 PM
Using barcodes 📊 to track cancer 💊 resistance evolution: is it clonal selection or plasticity? @fwhiting.bsky.social knows! His new "Evolutionary Informed Resistance Assays" (EIRAs) framework infers resistance evolution dynamics from barcode diversity data. www.nature.com/articles/s41... @icr.ac.uk
Another tour de force by the Victora lab. A must read for germinal center aficionados. There goes the weekend!
Wanted to highlight our latest preprint--a huge effort by multiple people and labs, but led primarily by @wsdewitt.github.io, Tatsuya Araki, and Ashni Vora, in a very close wet-dry collaboration with @matsen.bsky.social’s lab at the Hutch
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Replaying germinal center evolution on a quantified affinity landscape
Darwinian evolution of immunoglobulin genes within germinal centers (GC) underlies the progressive increase in antibody affinity following antigen exposure. Whereas the mechanics of how competition be...
www.biorxiv.org
June 7, 2025 at 11:17 AM
Another tour de force by the Victora lab. A must read for germinal center aficionados. There goes the weekend!
Reposted by Jeroen Guikema
David Liu @harvard.edu beautifully articulates the criticality of basic science funding for developing revolutionary therapeutics like life-saving base editors 👏
youtu.be/8YhJM6zxYDw?...
youtu.be/8YhJM6zxYDw?...
Breakthrough Prize-Winning Biochemist on the Deadly Cost of Funding Cuts | Amanpour and Company
YouTube video by Amanpour and Company
youtu.be
May 24, 2025 at 1:13 AM
David Liu @harvard.edu beautifully articulates the criticality of basic science funding for developing revolutionary therapeutics like life-saving base editors 👏
youtu.be/8YhJM6zxYDw?...
youtu.be/8YhJM6zxYDw?...
Interesting study on how to sensitize myeloma cells to the BCL2 inhibitor venetoclax by interfering with signal transduction pathways. #myeloma #science 🩸🔬https://www.nature.com/articles/s41408-025-01215-x
Exploring BCL2 regulation and upstream signaling transduction in venetoclax resistance in multiple myeloma: potential avenues for therapeutic intervention - Blood Cancer Journal
Blood Cancer Journal - Exploring BCL2 regulation and upstream signaling transduction in venetoclax resistance in multiple myeloma: potential avenues for therapeutic intervention
www.nature.com
May 4, 2025 at 8:54 AM
Reposted by Jeroen Guikema
This is what we know about the so-called 'epithelial-mesenchymal transition'
'Lack of basic rationale in epithelial-mesenchymal transition and its related concepts'
cellandbioscience.biomedcentral.com/articles/10....
'Lack of basic rationale in epithelial-mesenchymal transition and its related concepts'
cellandbioscience.biomedcentral.com/articles/10....
May 3, 2025 at 11:26 AM
This is what we know about the so-called 'epithelial-mesenchymal transition'
'Lack of basic rationale in epithelial-mesenchymal transition and its related concepts'
cellandbioscience.biomedcentral.com/articles/10....
'Lack of basic rationale in epithelial-mesenchymal transition and its related concepts'
cellandbioscience.biomedcentral.com/articles/10....
Reposted by Jeroen Guikema
I think a lot about what Carl Sagan said in one of his final interviews.
May 4, 2025 at 6:21 AM
I think a lot about what Carl Sagan said in one of his final interviews.
Reposted by Jeroen Guikema
And, again, WHERE IS #BIGPHARMA in defending #basicscience? laying low? playing dead? Waiting it out? Do SOMETHING! SPEAK UP! Use your gigantic lobbying machine to defend us instead of peddling your wares and increasing your profits. Or do you think highly trained workforce grows on trees?
May 2, 2025 at 11:55 AM
And, again, WHERE IS #BIGPHARMA in defending #basicscience? laying low? playing dead? Waiting it out? Do SOMETHING! SPEAK UP! Use your gigantic lobbying machine to defend us instead of peddling your wares and increasing your profits. Or do you think highly trained workforce grows on trees?
Reposted by Jeroen Guikema
Antibodies don't work.
NLRP3 is by far the most studied inflammasome — yet <30% of commercial antibodies were specific.
Only 4 of 14 tested antibodies detected NLRP3 specifically.
Antibodies must be validated before use.
Full report by @ycharos.bsky.social : zenodo.org/records/1162...
NLRP3 is by far the most studied inflammasome — yet <30% of commercial antibodies were specific.
Only 4 of 14 tested antibodies detected NLRP3 specifically.
Antibodies must be validated before use.
Full report by @ycharos.bsky.social : zenodo.org/records/1162...
April 30, 2025 at 6:15 AM
Antibodies don't work.
NLRP3 is by far the most studied inflammasome — yet <30% of commercial antibodies were specific.
Only 4 of 14 tested antibodies detected NLRP3 specifically.
Antibodies must be validated before use.
Full report by @ycharos.bsky.social : zenodo.org/records/1162...
NLRP3 is by far the most studied inflammasome — yet <30% of commercial antibodies were specific.
Only 4 of 14 tested antibodies detected NLRP3 specifically.
Antibodies must be validated before use.
Full report by @ycharos.bsky.social : zenodo.org/records/1162...
Reposted by Jeroen Guikema
B͓̊å͓c͓̊t͓̊e͓̊r͓̊i͓̊å͓l͓̊ s͓̊ů͓g͓̊å͓r͓̊ f͓̊ů͓e͓̊l͓̊s͓̊
c͓̊å͓n͓̊c͓̊e͓̊r͓̊ r͓̊i͓̊s͓̊k͓̊
Study in 𝘕𝘢𝘵𝘶𝘳𝘦 finds ADP-HEPTOSE, a bacterial sugar produced by Gram- gut flora, leaks into the bloodstream with age, activating NF-κB, giving pre-leukaemic blood cells a growth edge, and triggering dangerous clonal haematopoiesis
Starczynowski Lab U Cincinnati
c͓̊å͓n͓̊c͓̊e͓̊r͓̊ r͓̊i͓̊s͓̊k͓̊
Study in 𝘕𝘢𝘵𝘶𝘳𝘦 finds ADP-HEPTOSE, a bacterial sugar produced by Gram- gut flora, leaks into the bloodstream with age, activating NF-κB, giving pre-leukaemic blood cells a growth edge, and triggering dangerous clonal haematopoiesis
Starczynowski Lab U Cincinnati
Microbial metabolite drives ageing-related clonal haematopoiesis via ALPK1 - Nature
ADP-heptose binds to ALPK1, triggering transcriptional reprogramming and NF-κB activation, endowing pre-leukaemic cells with a competitive advantage due to excessive clonal proliferation.
www.nature.com
April 27, 2025 at 4:05 PM
B͓̊å͓c͓̊t͓̊e͓̊r͓̊i͓̊å͓l͓̊ s͓̊ů͓g͓̊å͓r͓̊ f͓̊ů͓e͓̊l͓̊s͓̊
c͓̊å͓n͓̊c͓̊e͓̊r͓̊ r͓̊i͓̊s͓̊k͓̊
Study in 𝘕𝘢𝘵𝘶𝘳𝘦 finds ADP-HEPTOSE, a bacterial sugar produced by Gram- gut flora, leaks into the bloodstream with age, activating NF-κB, giving pre-leukaemic blood cells a growth edge, and triggering dangerous clonal haematopoiesis
Starczynowski Lab U Cincinnati
c͓̊å͓n͓̊c͓̊e͓̊r͓̊ r͓̊i͓̊s͓̊k͓̊
Study in 𝘕𝘢𝘵𝘶𝘳𝘦 finds ADP-HEPTOSE, a bacterial sugar produced by Gram- gut flora, leaks into the bloodstream with age, activating NF-κB, giving pre-leukaemic blood cells a growth edge, and triggering dangerous clonal haematopoiesis
Starczynowski Lab U Cincinnati
Reposted by Jeroen Guikema
Thrilled to see this “veritable tour de force” led by John_C_Fielden from Jacob Corn lab out @nature.com, rdcu.be/ehd4E. This @erc.europa.eu funded project uses #CRISPRi to systematically scan 548 DDR genes for synthetic lethal interactions, ~150,000 pairwise combinations!
Comprehensive interrogation of synthetic lethality in the DNA damage response
Nature - Combinatorial CRISPRi screening was used to map genetic interactions in DNA damage response pathways, revealing known and new connections, including the roles of WDR48 and USP1 in...
rdcu.be
April 14, 2025 at 10:22 AM
Thrilled to see this “veritable tour de force” led by John_C_Fielden from Jacob Corn lab out @nature.com, rdcu.be/ehd4E. This @erc.europa.eu funded project uses #CRISPRi to systematically scan 548 DDR genes for synthetic lethal interactions, ~150,000 pairwise combinations!
Reposted by Jeroen Guikema
our work on the molecular differences between transcription factor isoforms is out now in Molecular Cell!
key point: 2/3rds of TF isos differ in properties like DNA binding & transcriptional activity
many are "negative regulators" & misexpressed in cancer
www.sciencedirect.com/science/arti...
key point: 2/3rds of TF isos differ in properties like DNA binding & transcriptional activity
many are "negative regulators" & misexpressed in cancer
www.sciencedirect.com/science/arti...
March 26, 2025 at 5:11 PM
our work on the molecular differences between transcription factor isoforms is out now in Molecular Cell!
key point: 2/3rds of TF isos differ in properties like DNA binding & transcriptional activity
many are "negative regulators" & misexpressed in cancer
www.sciencedirect.com/science/arti...
key point: 2/3rds of TF isos differ in properties like DNA binding & transcriptional activity
many are "negative regulators" & misexpressed in cancer
www.sciencedirect.com/science/arti...
Reposted by Jeroen Guikema
Freedom of speech? Don't travel to the US, it is not save
French scientist denied US entry after phone messages critical of Trump found
France’s research minister said the scientist was traveling to Houston for a conference when his phone was searched
www.theguardian.com/...
1/2
French scientist denied US entry after phone messages critical of Trump found
France’s research minister said the scientist was traveling to Houston for a conference when his phone was searched
www.theguardian.com/...
1/2
French scientist denied US entry after phone messages critical of Trump found
France’s research minister said the scientist was traveling to Houston for a conference when his phone was searched
www.theguardian.com
March 20, 2025 at 7:01 AM
Freedom of speech? Don't travel to the US, it is not save
French scientist denied US entry after phone messages critical of Trump found
France’s research minister said the scientist was traveling to Houston for a conference when his phone was searched
www.theguardian.com/...
1/2
French scientist denied US entry after phone messages critical of Trump found
France’s research minister said the scientist was traveling to Houston for a conference when his phone was searched
www.theguardian.com/...
1/2