Mara Sherman

@marasherman.bsky.social

Scientist at Memorial Sloan Kettering Cancer Center in NYC. “The greatest gift you ever give is your honest self.” - Fred Rogers

We are seeking a highly motivated scientist with expertise in mouse embryo manipulation and the generation of genetically engineered mouse models. This is a permanent position with competitive compensation. Contact me via direct message if interested. Please share!

Now accepting applications for our 2026 Cancer Biology & Cancer Engineering programs. Aspiring scientists & engineers will solve fundamental problems in biology & conduct research & develop technology that will help understand, diagnose & treat cancer. bit.ly/3WUiuo1

Gerstner Sloan Kettering Graduate School of Biomedical Sciences

The Gerstner Sloan Kettering Graduate School of Biomedical Sciences offers the next generation of basic scientists a program to study the biological sciences through the lens of cancer

bit.ly

To distract from your own stress responses (!!!), check out this awesome new study from the Commisso lab linking metabolic stress to regulation of the pancreatic tumor microenvironment! ✨

Cosimo Commisso@cosimocommisso.bsky.social · last yr.

Excited to share work published in @cp-cancercell.bsky.social by @yijuan.bsky.social showing that macropinocytosis inhibition drives myCAF-to-iCAF conversion, enhancing therapeutic responses in pancreatic cancer. Thank you to our collaborators that contributed! www.sciencedirect.com/science/arti...

New paper: More than 2700 human 3′UTRs are highly conserved. These 3′UTRs are essential components in mRNA templates, as their deletion decreases protein activity without changing protein abundance. Highly conserved 3′UTRs help the folding of proteins with long IDRs. www.biorxiv.org/content/10.1...

mRNA 3′UTRs chaperone intrinsically disordered regions to control protein activity

More than 2,700 human mRNA 3′UTRs have hundreds of highly conserved (HC) nucleotides, but their biological roles are unclear. Here, we show that mRNAs with HC 3′UTRs mostly encode proteins with long intrinsically disordered regions (IDRs), including MYC, UTX, and JMJD3. These proteins are only fully active when translated from mRNA templates that include their 3′UTRs, raising the possibility of functional interactions between 3′UTRs and IDRs. Rather than affecting protein abundance or localization, we find that HC 3′UTRs control transcriptional or histone demethylase activity through co-translationally determined protein oligomerization states that are kinetically stable. 3′UTR-dependent changes in protein folding require mRNA-IDR interactions, suggesting that mRNAs act as IDR chaperones. These mRNAs are multivalent, a biophysical RNA feature that enables their translation in network-like condensates, which provide favorable folding environments for proteins with long IDRs. These data indicate that the coding sequence is insufficient for the biogenesis of biologically active conformations of IDR-containing proteins and that RNA can catalyze protein folding. ### Competing Interest Statement The authors have declared no competing interest. Pershing Square Foundation, https://ror.org/04tce9s05 G. Harold & Leila Y. Mathers Foundation National Institutes of Health, DP1GM123454, R35GM144046 Memorial Sloan Kettering Cancer Center, https://ror.org/02yrq0923, P30 CA008748

biorxiv.org

25 years ago, I came to Stanford on a J1 visa and worked so hard to be worthy of that privilege. Today, I lead Immunology at Mount Sinai and I am the one who feel privileged when brilliant international trainees chose to join us.

“America First” Will Destroy U.S. Science

The U.S. government has sought to restrict immigration under the “America First” doctrine. These policies severely harm American science by stripping it of talent and eliminating a major driver of its...

cell.com

Congratulations to the brilliant Boire and Pe’er labs plus all authors for this seminal study of the unique tumor immunology of the leptomeninges! ✨

@danapeer.bsky.social · last yr.

I am pleased to share our recent publication, fruit of a wonderful collaboration with truly amazing colleagues @adrienneboire.bsky.social and @meningojan.bsky.social, whose work was a tour de force demonstrating that immunology in the brain is a different beast -> www.nature.com/articles/s41...

1) I am delighted to share a manuscript long in the making (7 years), elucidating the forces that shape metastatic adaptation PDAC using scRNA-seq across multiple organs from a rapid autopsy combined with a powerful new clonal phylogeny inference algorithm www.biorxiv.org/content/10.1...

Transcriptomic plasticity is a hallmark of metastatic pancreatic cancer

Metastasis is the leading cause of cancer deaths; nonetheless, how tumor cells adapt to vastly different organ contexts is largely unknown. To investigate this question, we generated a transcriptomic ...

biorxiv.org