Chris Hsiung
@chrishsiung.bsky.social
Molecular biologist | Assistant Professor at UCSF | hsiunglab.org | synthetic gene regulation, combinatorial genetics, tissue biology | #ClimateCrisis
Pinned
Chris Hsiung
@chrishsiung.bsky.social
· Nov 30
My lab at UCSF (hsiunglab.org) is looking to recruit multiple postdocs across the spectrum of wet/dry lab interests to contribute to our research in synthetic gene regulation, combinatorial genetics, and tissue biology (including liver biology and immuno-oncology).
Reposted by Chris Hsiung
So awesome to have this great paper from Sam Reffsin and Sara Cherry out! In it, we use retrospective clone tracing to show that there are particular single cell states that are more susceptible to viral infection (both SARS-CoV-2 and flu)!
www.cell.com/cell/fulltex...
www.cell.com/cell/fulltex...
Single-cell susceptibility to viral infection is driven by variable cell states
Not all cells that can be infected by a virus become infected with that virus. Single-cell
clone tracing reveals intrinsic cell states with variable expression patterns that
increase susceptibility to...
www.cell.com
November 14, 2025 at 4:47 PM
So awesome to have this great paper from Sam Reffsin and Sara Cherry out! In it, we use retrospective clone tracing to show that there are particular single cell states that are more susceptible to viral infection (both SARS-CoV-2 and flu)!
www.cell.com/cell/fulltex...
www.cell.com/cell/fulltex...
Reposted by Chris Hsiung
biology is so cool because like every week someone is like "Dr. Smith is coming to campus! She is the world expert in blargyblarg!"
And i'm like A) never heard of blargyblarg, B) look it up, it's super important and interesting
And i'm like A) never heard of blargyblarg, B) look it up, it's super important and interesting
November 4, 2025 at 7:24 PM
biology is so cool because like every week someone is like "Dr. Smith is coming to campus! She is the world expert in blargyblarg!"
And i'm like A) never heard of blargyblarg, B) look it up, it's super important and interesting
And i'm like A) never heard of blargyblarg, B) look it up, it's super important and interesting
Reposted by Chris Hsiung
(3/n) Do mitotic microcompartments have a transcriptional function?
Prior work from @chrishsiung.bsky.social Gerd Blobel discovered 'mitotic transcriptional spiking', where ~half of genes transcriptionally spike in mitosis.
We now show that microcompartment dot number and strength predicts spiking
Prior work from @chrishsiung.bsky.social Gerd Blobel discovered 'mitotic transcriptional spiking', where ~half of genes transcriptionally spike in mitosis.
We now show that microcompartment dot number and strength predicts spiking
October 20, 2025 at 6:45 PM
(3/n) Do mitotic microcompartments have a transcriptional function?
Prior work from @chrishsiung.bsky.social Gerd Blobel discovered 'mitotic transcriptional spiking', where ~half of genes transcriptionally spike in mitosis.
We now show that microcompartment dot number and strength predicts spiking
Prior work from @chrishsiung.bsky.social Gerd Blobel discovered 'mitotic transcriptional spiking', where ~half of genes transcriptionally spike in mitosis.
We now show that microcompartment dot number and strength predicts spiking
Reposted by Chris Hsiung
Really excited to share our latest work led by @mattiaubertini.bsky.social and @nesslfy.bsky.social: we report that cohesin loop extrusion creates rare but long-lived encounters between genomic sequences which underlie efficient enhancer-promoter communication.
www.biorxiv.org/content/10.1...
A🧵👇
www.biorxiv.org/content/10.1...
A🧵👇
September 24, 2025 at 9:45 PM
Really excited to share our latest work led by @mattiaubertini.bsky.social and @nesslfy.bsky.social: we report that cohesin loop extrusion creates rare but long-lived encounters between genomic sequences which underlie efficient enhancer-promoter communication.
www.biorxiv.org/content/10.1...
A🧵👇
www.biorxiv.org/content/10.1...
A🧵👇
Reposted by Chris Hsiung
Another paper bluetorial! Today: how does the spatial location of genes influence their function? (1/n) www.nature.com/articles/s41...
The nuclear periphery confers repression on H3K9me2-marked genes and transposons to shape cell fate - Nature Cell Biology
Marin et al. report the role of lamin proteins and the lamin B receptor (LBR) in chromatin positioning at the nuclear periphery. Knockout of all lamins and LBR in mouse embryonic stem cells leads to h...
www.nature.com
July 22, 2025 at 5:10 PM
Another paper bluetorial! Today: how does the spatial location of genes influence their function? (1/n) www.nature.com/articles/s41...
Reposted by Chris Hsiung
What do GWAS and rare variant burden tests discover, and why?
Do these studies find the most IMPORTANT genes? If not, how DO they rank genes?
Here we present a surprising result: these studies actually test for SPECIFICITY! A 🧵on what this means... (🧪🧬)
www.biorxiv.org/content/10.1...
Do these studies find the most IMPORTANT genes? If not, how DO they rank genes?
Here we present a surprising result: these studies actually test for SPECIFICITY! A 🧵on what this means... (🧪🧬)
www.biorxiv.org/content/10.1...
Specificity, length, and luck: How genes are prioritized by rare and common variant association studies
Standard genome-wide association studies (GWAS) and rare variant burden tests are essential tools for identifying trait-relevant genes. Although these methods are conceptually similar, we show by anal...
www.biorxiv.org
December 17, 2024 at 7:05 AM
What do GWAS and rare variant burden tests discover, and why?
Do these studies find the most IMPORTANT genes? If not, how DO they rank genes?
Here we present a surprising result: these studies actually test for SPECIFICITY! A 🧵on what this means... (🧪🧬)
www.biorxiv.org/content/10.1...
Do these studies find the most IMPORTANT genes? If not, how DO they rank genes?
Here we present a surprising result: these studies actually test for SPECIFICITY! A 🧵on what this means... (🧪🧬)
www.biorxiv.org/content/10.1...
Reposted by Chris Hsiung
New preprint! We solve a mystery you didn't know existed. Mitotic cells lack new transcription but require ongoing translation. Interphase mRNA half life is only 2-4 hrs. So how do cells arrest in mitosis for hours without depleting their transcriptomes?
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Global inhibition of deadenylation stabilizes the transcriptome in mitotic cells
In the presence of cell division errors, mammalian cells can pause in mitosis for tens of hours with little to no transcription, while still requiring continued translation for viability. These unique...
www.biorxiv.org
July 23, 2025 at 10:57 AM
New preprint! We solve a mystery you didn't know existed. Mitotic cells lack new transcription but require ongoing translation. Interphase mRNA half life is only 2-4 hrs. So how do cells arrest in mitosis for hours without depleting their transcriptomes?
www.biorxiv.org/content/10.1...
www.biorxiv.org/content/10.1...
Reposted by Chris Hsiung
EPIGENETIC HULK READY TO SMASH AGAIN! GET IN LOSERS!
June 13, 2025 at 4:30 AM
EPIGENETIC HULK READY TO SMASH AGAIN! GET IN LOSERS!
Reposted by Chris Hsiung
#FragileNucleosome seminar happening tomorrow!
🔔Upcoming Wednesday, June 4th! Join us for another #FragileNucleosome series! Two amazing talks by @1995dana.bsky.social & @chrishsiung.bsky.social! If you haven’t jooned for any of 2025 talks, register here:
us06web.zoom.us/webinar/regi...
us06web.zoom.us/webinar/regi...
June 3, 2025 at 10:29 AM
#FragileNucleosome seminar happening tomorrow!
Looking forward to sharing our work in the #FragileNucleosome series!
🔔Upcoming Wednesday, June 4th! Join us for another #FragileNucleosome series! Two amazing talks by @1995dana.bsky.social & @chrishsiung.bsky.social! If you haven’t jooned for any of 2025 talks, register here:
us06web.zoom.us/webinar/regi...
us06web.zoom.us/webinar/regi...
June 3, 2025 at 3:58 AM
Looking forward to sharing our work in the #FragileNucleosome series!
We're still recruiting!
We've successfully recruited one postdoc. We are still looking to recruit one more postdoc especially candidates with wet/dry lab hybrid background in genome regulation and/or interests in functional genomics approaches in novel human tissue biology models.
My lab at UCSF (hsiunglab.org) is looking to recruit multiple postdocs across the spectrum of wet/dry lab interests to contribute to our research in synthetic gene regulation, combinatorial genetics, and tissue biology (including liver biology and immuno-oncology).
May 9, 2025 at 10:25 PM
We're still recruiting!
We've successfully recruited one postdoc. We are still looking to recruit one more postdoc especially candidates with wet/dry lab hybrid background in genome regulation and/or interests in functional genomics approaches in novel human tissue biology models.
My lab at UCSF (hsiunglab.org) is looking to recruit multiple postdocs across the spectrum of wet/dry lab interests to contribute to our research in synthetic gene regulation, combinatorial genetics, and tissue biology (including liver biology and immuno-oncology).
March 13, 2025 at 6:50 AM
We've successfully recruited one postdoc. We are still looking to recruit one more postdoc especially candidates with wet/dry lab hybrid background in genome regulation and/or interests in functional genomics approaches in novel human tissue biology models.
Reposted by Chris Hsiung
Excited to share James Jusuf's preprint:
By integrating Micro-C with SuperRes Live-Imaging we can calibrate genomics&imaging to perform absolute quantification of looping (e.g. this loop is present 3%)
We quantify mESC 36k loops: are generally rare (2.3%)
www.biorxiv.org/content/10.1...
By integrating Micro-C with SuperRes Live-Imaging we can calibrate genomics&imaging to perform absolute quantification of looping (e.g. this loop is present 3%)
We quantify mESC 36k loops:
www.biorxiv.org/content/10.1...
January 16, 2025 at 1:35 PM
Excited to share James Jusuf's preprint:
By integrating Micro-C with SuperRes Live-Imaging we can calibrate genomics&imaging to perform absolute quantification of looping (e.g. this loop is present 3%)
We quantify mESC 36k loops: are generally rare (2.3%)
www.biorxiv.org/content/10.1...
By integrating Micro-C with SuperRes Live-Imaging we can calibrate genomics&imaging to perform absolute quantification of looping (e.g. this loop is present 3%)
We quantify mESC 36k loops:
www.biorxiv.org/content/10.1...
Happy new year! Our lab (hsiunglab.org) at UCSF is moving forward to next stages in our search for postdoc candidates. The positions are still open -- if interested please apply soon!
My lab at UCSF (hsiunglab.org) is looking to recruit multiple postdocs across the spectrum of wet/dry lab interests to contribute to our research in synthetic gene regulation, combinatorial genetics, and tissue biology (including liver biology and immuno-oncology).
January 6, 2025 at 6:18 PM
Happy new year! Our lab (hsiunglab.org) at UCSF is moving forward to next stages in our search for postdoc candidates. The positions are still open -- if interested please apply soon!
Reposted by Chris Hsiung
A little fun with numbers on this Sunday, showing just how successful DNA really is. First, here's what DNA looks like. I'll draw your attention to the "rise" in DNA, that is, the distance between two basepairs, which is 3.4 Angstroms, also known as 3.4x10^-10 meters...
December 8, 2024 at 9:52 PM
A little fun with numbers on this Sunday, showing just how successful DNA really is. First, here's what DNA looks like. I'll draw your attention to the "rise" in DNA, that is, the distance between two basepairs, which is 3.4 Angstroms, also known as 3.4x10^-10 meters...
My lab at UCSF (hsiunglab.org) is looking to recruit multiple postdocs across the spectrum of wet/dry lab interests to contribute to our research in synthetic gene regulation, combinatorial genetics, and tissue biology (including liver biology and immuno-oncology).
November 30, 2024 at 6:45 AM
My lab at UCSF (hsiunglab.org) is looking to recruit multiple postdocs across the spectrum of wet/dry lab interests to contribute to our research in synthetic gene regulation, combinatorial genetics, and tissue biology (including liver biology and immuno-oncology).