Robbie Majzner's Lab at Dana Farber. Focus on CAR T cell signaling & engineering, cancer immunotherapy & ganglioside biology. Interested in curing kids!
Happy to share the newest paper from our lab. Led by technician extraordinaire Aidan Tousley (soon to be an MD/PHD student!), this manuscript details our attempts to reimagine the structure of CARs to improve their specificity and efficacy.
@BMWK
Thank you for your moral clarity, your support of Israel and hope for a future of peace. My holocaust survivor grandparents would be very touched by your words.
Our experience w/GD2 CAR T cells in 4 patients with DIPG/DMG was published today. This work taught us much about how to safely & effectively treat this disease w/CARs. Deeply grateful to patients & families who bravely trusted us as we learned together.
1/
Excited to share that
@Majzner_Lab
is moving to
@DanaFarber
@DFBC_PedCare
as of Sept. Bittersweet to leave Stanford, but looking forward to growing our research program both in the lab and in the clinic. Hiring postdocs, scientists & lab manager- please reach out if interested!
My lab at Stanford is hiring. We work on engineering new cancer immunotherapies and understanding their activity in early phase trials. Open postdoc positions as well as a technician with animal experience. Contact me if interested! Please retweet!
Thank you
@NatureMedicine
for your recognition of the growing lab! Excited for the new therapies we will bring to children with cancer in the next few years.
11 trailblazing early-career researchers, shaping the future of
#medicine
, share what they are most excited about right now and where their research is going in the next 5 years - read now:
Really happy to see the wonderful work from colleagues in Rome using 3rd gen GD2 CARs for neuroblastoma. This is the largest series of CAR T responses in a solid tumor to date & the fact that it’s in a pediatric cancer is awesome! Bravo!
Happy to share our lab's first manuscript. In work led by
@JTheruvath_MD
, we tested a combo of FDA approved anti-GD2 with blockade of CD47, a macrophage checkpoint. Blocking CD47 unleashes patients' macrophages to phagocytose or 'eat' cancer cells. Combo was highly effective! 1/
Happy to be a part of NexTGen team to solve the challenge of solid tumors in children. Cell therapies can get us there! Led by Martin Pule & Cath Bollard, grant will support 5yr research incl. 3 trials of CAR T in kids!
Our experience w/GD2 CAR T cells in 4 patients with DIPG/DMG was published today. This work taught us much about how to safely & effectively treat this disease w/CARs. Deeply grateful to patients & families who bravely trusted us as we learned together.
1/
@ProfKFranke
This is a pathetic take on a horrible massacre. Your academic posturing reeks of moral cowardice - calling murder, torture, and rape "military action/response" - shameful!
@Columbia
- you are becoming more and more irrelevant to the lives of your alumni.
@MarcelaMaus
gave a fantastic talk about the different role of IFNg for CAR T cells for solid vs liquid tumors. Really cool and unexpected biology. Congrats
@SRBailey32
and Rebecca Larson!
Looking to hire a lab manager/technician for the new lab at Dana Farber. Please apply to join our group focused on engineering new cell therapies, especially for pediatric cancer. Job description is flexible - experience with mice and T cells preferred.
Happy to post about a great collaboration with
@KStegmaier_DFCI
led by
@Nathaniel_Mabe
and Min Huang
@StanfordPeds
where we identify GD2 loss and downregulation as a major resistance mechanism to anti-GD2 antibodies in neuroblastoma
Huge milestone-functional cure for many w/sickle cell& b-thal. Lots of focus on rapid clinical dev of CRISPR, but equal emphasis should be placed on discoveries by Stuart Orkin &
@bloodgenes
in hemoglobin biology/regulation. So important to fund basic science- FUELS translation!
In a major milestone for science, for medicine, and for patients, the world’s first CRISPR drug has been approved in the UK.
“A new treatment for sickle-cell disease and transfusion-dependent β-thalassemia has been authorised by the Medicines and Healthcare products Regulatory
On this week's episode: A new LINK 🔗 CAR system from Dr. Robbie Majzner's group (
@Majzner_Lab
) can improve efficacy and prevent on-target, off-tumor toxicity of
#CART
cells.
📄
@Nature
:
🎧:
We are hiring a lab manager/tech for the new lab at DFCI! Please apply or get in touch if interested! The job will be part management and part science - very flexible -
Congratulations to Maria Caterina Rotiroti, PhD, the recipient of the 2022 AACR-Amgen Fellowship in Clinical/Translational Cancer Research. We look forward to her progress in engineering CAR T cells.
What an amazing pipeline and story here. Neoantigens from driver mutations that are shared between patients and can be targeted with patient derived TCRs.
@KlebanoffLab
- can’t wait to see more of these!
It’s really unbelievable how modern science & technology is changing the course of incurable childhood diseases. Generations of pediatric residents remember caring for sick teenagers with CF in hospital - something that is now becoming rare. Will be true of sickle cell soon too.
This is Gunnar and his son Kaspar. Gunnar turned 32 today. At Kaspar's age a CF patient was expected to live into their early 20's. Gunnar is our hero and Kaspar is our miracle. To all who have shared this journey with
@cysticfibrosis
I cant say thank you enough. 🙏🏻😍
Read this week's Cancer Discovery
#ResearchWatch
:
Logic-Gated CARTCells Enhance Survival and Reduce On-Target Toxicity, a summary of the paper by Aidan Tousley,
@Majzner_Lab
et al.
@Stanford
Thank you SKC and partners for coming together and funding this research! It’s inspiring to see how driven families are in the fight against neuroblastoma.
Congratulations to my mentor Crystal Mackall
@MackallLab
@cm35c
who has always instilled in her trainees the importance of taking bold steps for the good of children with cancer!
Join us from 9:05-9:55 a.m. EST for the Richard V. Smalley Memorial Award and Lectureship. Hear from Dr. Crystal Mackall as she presents "CAR-T Cells for Solid Tumors: Charting a Path Forward."
#SITC21
this seems more impactful than any of the other allo. allo CAR vs new target (CD70) in a dz indication without an approved auto CAR. CR rate 20% so still room to improve, but its something! who knows about durability/persist, but at least they did B2M-KO. CD70 is on many cancers
THE COBALT-LYM STUDY OF CTX130: A PHASE 1 DOSE ESCALATION STUDY OF CD70-TARGETED ALLOGENEIC CRISPR-CAS9–ENGINEERED CAR T CELLS IN PATIENTS WITH RELAPSED/REFRACTORY (R/R) T-CELL MALIGNANCIES $CRSP
47% ORR in n=15 R/R TCL
This was a fun one.
@ebmrheum
offered to come on the show and grill me. I think it was a fun dialogue. Agreement and disagreement. Sort of dialogue that used to happen at universities.
@ProfKFranke
Pathetic! 10/7 was terrorism, not military response-hamas targeted children, raped women. Congrats for using academic position to whitewash terror w/verbal gymnastics. No matter your politics, u could be condemn evil. Instead u shame
@Columbia
. Hard to associate w/my alma mater!
We focused on building this as a Boolean logic AND-gate. Through iterative engineering, we generated LINK CAR, a system in which activation is dependent on 2 distinct antigens while there is no activation when just one is ligated. Not trivial – took ~2yrs and 100s of constructs!
The big step came from studying T cell signaling. Thanks to an incredible library of literature that was constructed by Art Weiss, Larry Samelson, Gary Koretzky & others, as well as a 3 min youtube video ()😀, we understood that the role of ZAP-70 is to...
phosphorylate LAT & SLP-76 which then form a scaffold for PLCγ. Because could initiate T cell signaling with ZAP-70 or PLCγ CARs, we hypothesized that we could also activate T cell by clustering both LAT and SLP-76 CARs (which are otherwise inactive). Amazingly it worked!
What an accomplishment to run a ~50,000 subject adaptive randomized trial while at the front lines of caring for pt w/COVID in 2020. The epitome of leadership in medicine and science. Thank you to the RECOVERY team!
The RECOVERY trial helped save >1 million lives
Here, we reflect on what it felt like to see results for the first treatment.
But most remarkable are the comments from frontline NHS staff & patients. Without them none of this would’ve been possible.
New
@a16zBioHealth
Bio Eats World Journal Club episode is out! I had a wonderful time discussing the
@Majzner_Lab
's new work engineering CAR T cells with true boolean logic gates for improved safety and efficacy. Thanks to Robbie for joining. Listen in! 🎧
We developed an improved on-target off-tumor toxicity model using a ROR1-targeting CAR with a 28 costim. We built an NFKB activation reporter using
@michaelzlin
's Antares and demonstrated that ROR1(F).28z CAR-T cells attack healthy ROR1 expressing cells in the lung.
7/
We asked whether we could initiate T cell signaling downstream of the TCR complex and created CARs consisting of endodomains from cytosolic proximal signaling molecules rather than traditional costim and CD3ζ. Much to our surprise, some of these Frankenstein molecules worked!
The tumor regressions & clinical improvement were beyond anything we expected on this 1st dose level of a Phase 1 trial for an incurable disease. Thankful to mentors/leaders
@michelle_monje
(PI) and
@cm35c
(IND holder) and co-first author
@SRamakrishna_MD
(correlative leader) 2/
We hope this represents a watershed moment where we start to turn the tide against this dreadful disease & other incurable childhood cancers. This is truly a story of the power of the peds oncology community (researchers & families). I’d like to mention a few in particular. 4/
Many people to thank for helping with this work. Aidan did all heavy lifting & despite not having any formal training in science, he built what will hopefully be a transformative system. Shows what hard work & imagination can accomplish! He will be a star MD/PhD student & doctor.
CARs have revolutionized the care of heme cancers & are starting to show promise in solid tumors. But since they were invented ~30 yrs ago, they have looked similar, linking an antigen binder outside the cell to CD3ζ, master switch of T cell signaling, inside the cell (+costim).
GD2 is a cancer target identified in 80’s. Immunotherapy leaders Ralph Reisfeld, Alice Yu, Paul Sondel & NK Cheung pioneered anti-GD2 to treat children w/neuroblastoma. Reisfeld's life as a Jewish refugee who escaped Nazi Germany resonates strongly w/me!
5/
What a shame. Whether you agree with him on everything, something, or nothing,
@VPrasadMDMPH
is thoughtful & engaging. Why do academics think shutting down voices is the way to advance science & knowledge? Listen & debate! This is pretty feeble -why are we afraid of disagreement
@JacobPlieth
If B cells return quickly and CAR persistence is not necessary, I suspect that the cd20 or cd19 x cd3 bispecific engagers are going to be very active in autoimmunity. It’s interesting that this hasn’t been tried yet…
Please RT: faculty position at Stanford! PhD, MD, MD/PhD candidates in the broadly-defined fields of pediatric cancer or stem cell transplant, laboratory and/or computational research programs welcome. Amazing environment! Feel free to contact me + check:
Without tissue donations from families, would never have known GD2 is on DIPG. Without tremendous efforts for anti-GD2 in neuroblastoma, would not have pursued GD2 as a target. Without Baylor showing that GD2 CAR T cells could be safe, trial may not have been pursued at all! 9/
The Baylor group tested GD2 CAR despite potential for tox due to GD2 expression on normal nerves. They proved that this could be done safely & effectively. We now understand that our GD2 CAR T cells don’t attack nerves because they express much lower levels of GD2 than tumors. 7/
Compared to CD3ζ CARs, ZAP-70 CARs were much more effective in models of pediatric cancer. Enhanced activity was driven by increased expansion and persistence and even protected mice from tumor rechallenge. We are still working to understand the mechanism for improved activity.
This is truly a story of the success of pediatric oncology and what can be achieved when families and scientists work together and build on one another’s discoveries. This is also a story about the potential power of CAR T cells for pediatric cancer. 10/
CARs containing portions of ZAP-70 or PLCγ, important propagators of signal transduction within the T cell, demonstrated in vitro activity similar to traditional CD3ζ CARs. We also noticed that ZAP-70 CARs appeared less exhausted after culture so decided to test them in mice.
Loved working w/
@mvicaracal
who was an excellent, responsive & efficient editor.
@TeamSciStories
provided beautiful artwork. Thank you to the
@NIHDirector
&
@parkerici
for support! Our lab is hiring @ all levels (postdocs, techs, scientists) so please get in touch if interested.
Drug development for orphan diseases is notoriously difficult and expensive, and thus childhood cancer usually gets ignored. Cell therapy can change that because these therapies can be discovered, designed, and tested in academic laboratories and hospitals. 11/
Years later, w/tumors donated by families after children died of DIPG, Chris Mount,
@michelle_monje
discovered GD2 highly expressed. W/
@cm35c
, we found GD2 CAR T cells were effective in mice. Natural next step to bring this fwd through
@Stanford_CCT
8/
Fast fwd many years to Malcolm Brenner’s group at Baylor incl. Claudia Rossig & Martin Pule who developed & translated the 1st GD2 CAR T cell to children with neuroblastoma. This group was innovative and bold, setting the stage for cell therapy in kids!
6/
We hope LINK will enlarge the universe of antigens that can be safely targeted with CARs, unleashing them against solid tumors & diseases such as autoimmunity & fibrosis. Also, we show that the cell's intracellular machinery can be repurposed into synthetic surface receptors.
As presented recently by
@cm35c
&
@michelle_monje
, the story continues to evolve as we apply the lessons from these 1st patients to more effectively treat additional children & young adults with this universally fatal disease. Looking fwd to sharing more in months to come.
3/
@TeamSciStories
Thank you
@TeamSciStories
for beautifully helping us tell our story! At a recent talk I gave, someone commented on the beautiful figures and color scheme - of course I had to tell them we could take none of the credit. I highly recommend working with your team!
Pathetic! 10/7 was terrorism, not military response-hamas targeted children, raped women. Congrats for using academic position to whitewash terror w/verbal gymnastics. No matter your politics, u could be condemn evil. Instead u shame
@Columbia
. Hard to associate w/my alma mater!
Columbia/Barnard faculty have signed an open letter supporting our students, making the point that identifying with the suffering of Gazans and historically contextualizing the current war in Israel/Gaza is not anti-Semitic. Please read and share.
@OdedRechavi
@OdedRechavi
thanks for making us laugh during this awful time. Your posts are the only ones that make me smile & laugh during incessant doom-scrolling. I’m sure I’m not the only Jewish scientist who feels the same! Praying for your continued safety & that of our whole nation.
I should add we are also looking for a scientist/senior scientist so anyone with more experience, especially in adoptive cell therapy/immunology, please let me know!
My lab at Stanford is hiring. We work on engineering new cancer immunotherapies and understanding their activity in early phase trials. Open postdoc positions as well as a technician with animal experience. Contact me if interested! Please retweet!
@MaxMamonkin
Congratulations Max! Glad to see the use of dasatinib in manufacturing is being used - doing the same (no ibrutinib) in our gd2 car trials.
@EvanWeberPhD
We tested LINK in a mouse model of on-target, off-tumor toxicity w/a ROR1 CAR that recognizes ROR1 on mouse lungs, resulting in toxicity. While CD3ζ CARs or other AND-gates resulted in death of the treated mice, those treated with LINK suffered no tox & tumors were eradicated.
Beyond excited to start this new adventure as an Assistant Professor at
@StanfordMed
. As part of
@StanfordPeds
,
@StanfordCancer
and
@Stanford_CCT
my lab's mission is to engineer cellular immunotherapies against novel, promising target antigens on childhood cancer. Let's go!
@bloodgenes
As a pediatrician and scientist, it's inspiring to see science fueling the transformation of care for children with incurable diseases-
@VertexPharma
at the center of such meaningful advances for patients with cystic fibrosis and now hemoglobinopathies!
@OrentasR
@EvanWeberPhD
@MackallLab
I was once excited about a CAR I engineered in
@MackallLab
- IL2 secretion in response 2 tumor was off the charts. But it was a dud in vivo. Went back in vitro, very high exhaustion markers & lots of baseline IFNg. Lack of tonic signaling also essential - thanks
@ahartlong
!
@skjask
What a joke - he claims that modern hebrew destroyed local Jewish languages like Yiddish -it was the Nazis that killed our Yiddish speaking families and destroyed the language. An antisemite trying to dictate our choice of language - it’s clear who is the true colonialist…
@JTheruvath_MD
Anti-GD2 is routinely used to treat kids with neuroblastoma but ~50% of patients still relapse. Also, although GD2 is expressed on osteosarcoma, anti-GD2 has not been effective in that disease. We think the combination with anti-CD47 can change that. 3/
@VPrasadMDMPH
honest Q
@VPrasadMDMPH
@AaronGoodman33
-what would U do if pt w/relapsed ALL post HSCT, now in remission post-CD19 CAR w/long term B cell aplasia & no symptoms (yet...). I would err on side of caution.
@AaronGoodman33
aren't your pt HSCT? dift than Epic SR-no data but reasonable?
i think i saw a poster once that their B2M efficiency was ~50%. i assume the same for CD70 KO. and they select only CD3 negative pre-infusion. will be very cool to see which cells from a heterogenous pot persist. hopefully they have strong correlatives planned!
@Prof_Oak_
My take: if T cell persistence/long term B cell aplasia isn’t required (“immunological reset”), blincyto & cd20xcd3’s may work here. Not sure why haven’t heard from Amgen in this space. I’m a huge CAR fan but if all u need for autoimmunity is 1 & done, cd3 engagers likely to work
Our message to NYU and our communities is clear: we are strong, we are not afraid, we are outraged by supporters of terror and we join with good people everywhere to fight back!
Huge milestone-functional cure for many w/sickle cell& b-thal. Lots of focus on rapid clinical dev of CRISPR, but equal emphasis should be placed on discoveries by Stuart Orkin &
@bloodgenes
in hemoglobin biology/regulation. So important to fund basic science- FUELS translation!
@JTheruvath_MD
Thanks to support from
@NCICTEP_ClinRes
& CRADA w/
@GileadSciences
(formerly CD47 Inc.), we are proud to test this approach in kids across US/Canada. Peds-CITN-03 is the 1st trial to test anti-CD47 in children and 1st trial of anti-GD2/anti-CD47 in humans
@AaronGoodman33
@DocsDock200
That’s quite a take-secondary malignancies occur after haplo as well plus the risk of GVHD! Curative auto w/gene therapy is new (not even approved) & risks will be uncovered but initial data looks great. Allo has many potential bad outcomes. My $ is on auto/gene therapy long term