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Sean Fanning

@docfanning.bsky.social
534 followers 520 following 46 posts

I am an Assistant Professor of Cancer Biology at Loyola University Chicago Stritch School of Medicine (www.fanninglab.com). The Fanning lab studies how allostery governs estrogen receptor-dependent transcriptional programs in breast cancer.

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Reposted by Sean Fanning
Nelson Lab, UIUC @nelsonlab.bsky.social · 24/03/2026
Register now for an amazing menu of endocine-related science and clinical practice! Early bird rate is ending soon! #ENDO2026
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Sean Fanning @docfanning.bsky.social · 21/03/2026
@cbartman.bsky.social I saw your post about Cas9 cells. Happy to share our MCF7 cas9 cells and gRNA protocol if you send a FedEx label for dry ice shipping.
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Reposted by Sean Fanning
Stephan Hacker @stephanhacker2.bsky.social · 19/03/2026
How do hormones and diet influence the outcome of #cancer therapy? Wilbert Zwart (@zwartlab.bsky.social) of the @nkinl.bsky.social gave an amazing lecture on this topic at #KNCVMCCB2026 covering various strategies to use this information for improved treatments. www.nature.com/articles/s41...
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Chemistry World @chemistryworld.com · 14/03/2026
The Trump administration's policies are taking a toll on the way researchers see a career in academia.
chemistryworld.com
US researchers are advising students not to enter academia
A survey of NIH-grantees in Massachusetts reveals delayed hiring in labs, layoffs, careers being pursued abroad and research scope reductions
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bioRxiv Cancer Bio @biorxiv-cancer.bsky.social · 14/03/2026
Advanced models of lobular breast cancer metastasis capture clinical organ tropism, endocrine response, and bone remodeling www.biorxiv.org/content/10.64898/20…
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Nima Sharifi MD @nimasharifimd.bsky.social · 25/02/2026
Androgen Metabolism in Prostate Cancer: Recent Advances #metabolism #testosterone #prostatecancer url: academic.oup.com/endo/article...
academic.oup.com
Androgen Metabolism in Prostate Cancer: Recent Advances
Abstract. Androgen biosynthesis is physiologically necessary for generating the principal stimulus for androgen receptor (AR) signaling and thus plays an e
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Eva Estébanez-Perpiñá, Ph.D. @estebanezlab.bsky.social · 16/05/2025
🎯 We are so thrilled our new paper @narjournal.bsky.social is out! Fantastic collab with the labs of Gordon Hager NIH & Franck Dequiedt. Heaviest lifting from Greg Fettweiss, Kaustub Wagh, Diana Stavreva & Alba Jiménez-Panizo. Big thanks to Andrea Alegre-Marti JdC 🥳✨️ academic.oup.com/nar/article/...
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Eva Estébanez-Perpiñá, Ph.D. @estebanezlab.bsky.social · 07/06/2025
📢 Read our new bioRx in colab with Gordon Hager NIH @PabloFuentesP #FRecio @aguslafuent @PresmanLab @WaghKaustubh #IGoldstein et al where we found glucocorticoid receptor GR self-assembly, chromatin binding & activity is modulated by bile acids binding to a novel druggable site
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Sean Fanning @docfanning.bsky.social · 17/01/2026
Latest publication from our lab! A part of our ongoing efforts to identify estrogen receptor ligands that influence structural and oligomeric states in unique ways. pubs.acs.org/doi/10.1021/...
pubs.acs.org
Allosteric Induction of Estrogen Receptor Ligand Binding Domain Tetramerization by a Distinct Complete Estrogen Receptor Antagonist
Complete estrogen receptor antagonists (CERANs) are effective against advanced estrogen receptor-positive (ER+) breast cancers, but current chemical scaffolds limit our ability to explore the full ran...
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Reposted by Sean Fanning
Matt Sikora @mjsikora.bsky.social · 14/11/2025
grants.nih.gov/grants/guide... This is going to be a fun next few grant cycles....
As of today, we can confirm that we will be rescheduling all October and November grant application submission deadlines (specific dates to be announced in a future Notice). By delaying due dates that occurred both during the lapse in funding and in the week following, applicants will have access to NIH staff and the help desks as they develop their applications.

Peer review meetings that were scheduled to take place between October 1 and November 14 have been cancelled and will be rescheduled, details to come. Additionally, council meetings that were scheduled to take place between October 1 and November 14 were cancelled and will be rescheduled, details to come.
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Biochemistry & Molecular Biomedicine UB @bqbiomedmolub.bsky.social · 22/10/2025
🔊 Nova publicació del Dpt @bqbiomedmolub.bsky.social pel grup liderat per la Dra Eva Estébanez-Perpiñá ‪@estebanezlab.bsky.social ‬@ibub-ub.bsky.social @biologiaub.bsky.social Enhorabona! 👋👋
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Matt Sikora @mjsikora.bsky.social · 20/10/2025
I know & trust that NIH staff will get this round of reviews done. Yet having done my own CSR reviews 'for nothing' & with my own R01 sitting unreviewed now, working on another NIH grant has never felt so painful and futile. A quiet impact on science, perhaps, robbing the joy from looking ahead.
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Reposted by Sean Fanning
Governor JB Pritzker @govpritzker.illinois.gov · 19/10/2025
Democracy in action, Illinois. Proud of our state for peacefully showing up and speaking out together in one voice to fight back against Donald Trump’s takeover of our democracy.
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Sean Fanning @docfanning.bsky.social · 11/09/2025
Just wrapped up my medical school teaching for the year. I happened to have an exceptionally awesome group of M1s. I’m excited to see where they’ll go from here!
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Senator Bernie Sanders @sanders.senate.gov · 02/09/2025
RFK Jr. and Trump tell us they want to Make America Healthy Again. Great slogan. I agree. Unfortunately, they are doing the exact opposite. Vaccines work. They are safe. They save lives. No more conspiracy theories.  Kennedy must resign.
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Sean Fanning @docfanning.bsky.social · 28/08/2025
Fanning Lab BBQ 2025! Another good year in the books thanks to this exceptional group! Also, they wanted me to make ribs and brisket, they know I look for any excuse to do a cook.
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Sean Fanning @docfanning.bsky.social · 16/07/2025
I had a wonderful time at Endo2025, catching up with great colleagues doing fantastic and important work in endocrinology. I particularly enjoyed chairing the session on Nuclear Receptor Structural Biology where @dougkojetin.bsky.social gave a powerhouse performance! 1/3
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Matt Sikora @mjsikora.bsky.social · 10/07/2025
New review from us on radiation in #lobular breast cancer! www.nature.com/articles/s41... Lots of anecdote that ILC is highly responsive to XRT (despite ~chemoresistance), but do we have the data? led by Dr. Michael Boysen (now resident at Trinity Health Ann Arbor), w Dr. Corey Speers @ UAB. 🧵1/n
nature.com
Radiation therapy for lobular breast cancer: opportunities and challenges for leveraging radiosensitivity - npj Breast Cancer
npj Breast Cancer - Radiation therapy for lobular breast cancer: opportunities and challenges for leveraging radiosensitivity
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Bryan Welm @bryanwelm.bsky.social · 10/07/2025
Finished another bronze of a T-cell attacking a cancer cell. This one is heading to Max Krummel at UCSF, who did some of the early studies on CTLA4 immunotherapy. #sciart.
Bronze sculpture of a T-cell attacking a cancer cell. Bronze sculpture of a T-cell attacking a cancer cell.
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Sean Fanning @docfanning.bsky.social · 27/06/2025
Very proud of Sofia for successfully defending her Master’s thesis today!! She’s starting her PhD in biomedicine at UMiami next year. Can’t wait to see what she’ll accomplish! I’m a proud PI!
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Nature Portfolio @natureportfolio.nature.com · 26/06/2025
A careers feature in Nature Biotechnology provides some keys to a successful transition from a career in academia to one in industry. #Academicsky 🧪
go.nature.com
Thinking about a move from academia to industry? Look before you leap - Nature Biotechnology
To those considering a change in careers from academia to the pharmaceutical industry, here are the keys to a successful transition.
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School of Molecular & Cellular Biology at Illinois (U. of I.) @mcbillinois.bsky.social · 25/06/2025
#Illinois researchers have successfully treated a common type of colorectal cancer tumor with a cholesterol inhibitor drug, demonstrating a promising treatment for the disease in animal experiments. The study was published in Nature Chemical Biology: go.mcb.illinois.edu/623 @nelsonlab.bsky.social
mcb.illinois.edu
Colorectal cancer treated with cholesterol inhibitor in U. of I. study | School of Molecular & Cellular Biology | Illinois
University of Illinois researchers have successfully treated a common type of colorectal cancer tumor with a cholesterol inhibitor drug, demonstrating a promising treatment for the disease in animal experiments.
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Matt Sikora @mjsikora.bsky.social · 25/06/2025
We did a thing w @jostrander.bsky.social! Over the last few years, we took a new direction into #lobular breast cancer oncogenesis. We know loss of the gene CDH1 (E-cadherin) is central to ILC, and is among its earliest oncogenic events. But why? How does this push normal breast toward cancer? 1/n
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bioRxiv Cancer Bio @biorxiv-cancer.bsky.social · 23/06/2025
CDH1 loss remodels gene expression and lineage identity in human mammary epithelial cells www.biorxiv.org/content/10.1101/202…
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Becca Riggins 🇻🇮 ⛵️🧪 @profriggins.bsky.social · 23/06/2025
Cool stuff 🎉👏 @mjsikora.bsky.social @jostrander.bsky.social #bcsm #lobular 🧪🧬
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Tammy Duckworth @duckworth.senate.gov · 22/06/2025
Trump bombing Iran was illegal and unjustified. I ran for Congress to make sure our leaders consider the true costs of war. And I will be in the Senate, standing on my titanium legs, demanding answers from Trump. My statement:
Duckworth statement on Trump’s strikes against Iran nuclear sites.Duckworth statement on Trump’s strikes against Iran nuclear sites.
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Science News @scinews.bsky.social · 22/06/2025
Stem Cell–Derived, Fully Differentiated Islets for Type 1 Diabetes. #NEJM "zimislecel can restore physiologic islet function" Reference www.nejm.org/doi/full/10....
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bioRxiv Cancer Bio @biorxiv-cancer.bsky.social · 21/06/2025
Super-resolution microscopy reveals distinct epigenetic states regulated by estrogen receptor activity www.biorxiv.org/content/10.1101/202…
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Nima Sharifi MD @nimasharifimd.bsky.social · 21/06/2025
Congrats Xiuxiu Li on her story out JBC! HSD3B1 Upregulation via LRH1 Sustains Estrogen Receptor Signaling and Promotes Endocrine Resistance in Breast Cancer - Journal of Biological Chemistry @asbmb.bsky.social 🧪https://www.jbc.org/article/S0021-9258%2825%2902255-0/fulltext
jbc.org
HSD3B1 Upregulation via LRH1 Sustains Estrogen Receptor Signaling and Promotes Endocrine Resistance in Breast Cancer
Endocrine resistance is a major challenge in the treatment of estrogen receptor-positive (ER+) breast cancer, often leading to disease recurrence and metastasis. 3β-Hydroxysteroid dehydrogenase 1 (3βH...
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Carolyn Bertozzi @carolynbertozzi.bskyverified.social · 21/06/2025
What an amazing time to be a biomedical scientist. www.nejm.org/doi/abs/10.1...
nejm.org
Stem Cell–Derived, Fully Differentiated Islets for Type 1 Diabetes | NEJM
Zimislecel is an allogeneic stem cell–derived islet-cell therapy. Data on the safety and efficacy of zimislecel in persons with type 1 diabetes are needed. We conducted a phase 1–2 study of zimisle...
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Reposted by Sean Fanning
Rep. Jamie Raskin @raskin.house.gov · 17/06/2025
Today I’m leading 152 House Democrats in challenging Trump's devastating cuts to life-saving NIH research grants. Congress—not Trump—controls federal spending. Trump must do his job, “faithfully execute” the laws and stop violating the Constitution to undercut public health.
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CU Gynecologic Oncology Research @cugynonc.bsky.social · 17/06/2025
Congrats to Team Bitler—Drs. Bitler, Corr, Sikora, Clauset, and many others—2025 CU ASPIRE Awardees🎉Their SPORE effort to advance ovarian cancer care with novel therapies & population science. #OvarianCancer #CUAnschutz @uccc-gorg.bsky.social‬ @mjsikora.bsky.social View details here: Bit.ly/4mWBRsO
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Governor JB Pritzker @govpritzker.illinois.gov · 16/06/2025
The Illinois General Assembly and I are working to make life more affordable for working families. Unlike the Trump administration, we're balancing a budget while maintaining programs our people rely on — and we're investing in our children and building them a brighter future.
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ACLU @aclu.org · 16/06/2025
BREAKING: A federal judge reversed National Institutes of Health's terminations of hundreds of critical research grants that were canceled because of their alleged connection to disfavored topics, including diversity, equity, inclusion, and gender identity. This is a major win for public health.
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Ernst Schmid @ernstschmid.bsky.social · 28/05/2025
Excited to share that our EndoMap project is now out! A fun collaboration with Miguel Gonzalez-Lozano from the @harperlabhms.bsky.social. Explore our #AlphaFold structural interactome of #XLMS complexes in endosomes-> endomap.hms.harvard.edu and read about it here-> www.nature.com/articles/s41...
nature.com
EndoMAP.v1 charts the structural landscape of human early endosome complexes - Nature
A study presents EndoMAP.v1, a resource that combines information on protein interactions and crosslink-supported structural predictions to map the interaction landscape of early endosomes.
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eLife @elife.bsky.social · 29/05/2025
🧪 A new method called MagIC-Cryo-EM allows scientists to use powerful #CryoEM techniques to examine proteins that have been difficult to study so far.
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The (molecular) shape of you
New methods allow scientists to use a powerful technique known as cryo-EM to examine proteins that have been difficult to study so far.
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Sean Fanning @docfanning.bsky.social · 09/05/2025
Congratulations to Sofia for graduating with her Masters degree! She the first Masters student to graduate from our lab! She did an impressive amount of work studying our new antiestrogens in breast cancer! She’s starting her PhD studies at UMiami in the fall, keep an eye on this rising star!
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Sean Fanning @docfanning.bsky.social · 30/04/2025
Come see @govindah.bsky.social present his awesome work showing how induction of SUMO1 expression contributes to the anti-cancer efficacy of fulvestrant in breast cancer! Despite decades of study, we still know remarkably little on how endocrine therapies work!
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Craig M. Crews @craigmcrews.bsky.social · 28/04/2025
"The half-life of this administration is two years; the half-life of the damage to American competitiveness is probably measured in decades." www.nytimes.com/2025/04/28/o...
nytimes.com
Opinion | The White House Tech Bros Owe Their Fortunes to the Research They’re Killing
Underlying many investments are breakthroughs in medicine and technology from great universities.
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60 Minutes @60minutes.bsky.social · 28/04/2025
Nearly 800 NIH grants have been terminated so far, including some focused on HIV and AIDS, trans health, and COVID-19, after researchers were told their work was no longer an agency priority. cbsn.ws/3YkDndI
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Sam Bagenstos @sbagen.bsky.social · 28/04/2025
"Given Kennedy's support for the gutting of the NIH, CDC, and FDA, alongside his espousal of unscientific treatments and theories, The Lancet joins Benjamin's call for Kennedy's resignation." www.thelancet.com/journals/lan....
thelancet.com
Supporting medical science in the USA
The pursuit of rigorous medical science is not compatible with capitulation to government demands aimed at weaponising and eroding science. On April 14, Edwin R Martin Jr, the Trump-appointed interim ...
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Sean Fanning @docfanning.bsky.social · 28/04/2025
Come see Kristen Young present her poster at 9:00 this morning! She shows how inhibiting immunosuppressive paracrine signaling with an antiestrogen reinvigorates NK cells to improve anticancer activities in ER+ breast cancer cells! @kristen-young.bsky.social #AACR25
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Matt Sikora @mjsikora.bsky.social · 26/04/2025
Made it to AACR! This is my 20 year anniv of membership, w/ my first meeting in 2005 as an undergrad Bardos Scholar. On Monday I'll be speaking in #lobular breast cancer session - eppro02.ativ.me/appinfo.php?... Kicking off #AACR25 on the cancer disparities track! @theaacr.bsky.social
Matt in front of the cover slide reading 'Social determinants of health and cancer outcomes: from the sidewalk to the bench and back again".
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Stand Up for Science! @standupforscience.net · 01/03/2025
"When you hear about patients surviving stage 4 cancer because of immunotherapy, that was based on NIH research over many decades. When you hear about sickle cell disease being cured because of CRISPR gene editing, that was built on years of research supported by NIH" apnews.com/article/nih-...
apnews.com
Renowned geneticist Francis Collins retires from NIH, urging 'respect' for embattled workers
Dr. Francis Collins, a renowned geneticist, and former longtime director of the National Institutes of Health, is retiring from the government agency and urging “respect” for its embattled workers.
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The New York Times @nytimes.com · 06/03/2025
Breaking News: A federal judge extended his block on President Trump’s efforts to withhold billions in congressionally approved funds from states and said the White House put itself “above Congress.”
nytimes.com
Judge Blocks Trump’s Funding Freeze, Saying White House Put Itself ‘Above Congress’
The judge had ruled that the administration was not complying with his previous order requiring the government to keep disbursing money to states.
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Julie Ostrander @jostrander.bsky.social · 06/03/2025
@docfanning.bsky.social at UMN today telling us about his work on ER structure and Dickkopf-1. My personal favorite was the cameo appearance of PELP1. Great talk Sean!
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Sean Fanning @docfanning.bsky.social · 27/02/2025
More highlights from the Cancer Research night. Emma presenting the latest on estrogen receptor structural ensembles. Followed by Sofia presenting her poster for ants.
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Sean Fanning @docfanning.bsky.social · 26/02/2025
@kristen-young.bsky.social presenting her award winning presentation at the Cardinal Bernardin Cancer Research night!
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Rick Huganir @rhuganir.bsky.social · 15/02/2025
I have been talking to the media, Time, Fortune, NBC, etc., to explain how the onslaught on science and NIH will impact the health of all Americans. Everyone knows someone who has cancer, heart disease, or depression. Spread the word about how cutting science impacts all. time.com/7216299/nih-...
time.com
Experts Call NIH Budget Cuts an 'Apocalypse' for Science
The reductions target indirect costs that cover administrative and equipment costs.
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Nature Portfolio @natureportfolio.nature.com · 16/02/2025
“But despair is not an option,” writes Gretchen Goldman in Nature. “It is important to remember that notable gains have been made in federal scientific-integrity protections in the past two decades.” 🧪
go.nature.com
‘Despair is not an option’ — how scientists can help protect federal research
Government scientists in the US must be clear-eyed and continue to serve the public.
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