Debbie Caswell
@caswelldrm.bsky.social
67 followers 40 following 13 posts
Principal Research Fellow @UCL | Lung cancer prevention laboratory
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Reposted by Debbie Caswell
cruk-mi.bsky.social
We are recruiting two exciting #Postdoctoral roles:

🧪 Work with @clausjorgensen.bsky.social on targeting the tumour #microenvironment in #PancreaticCancer

🥼 Join @drwilliamhill.bsky.social to study air pollution & #LungCancer

Full details of both positions at:
www.cruk.manchester.ac.uk/careers/
Photo shows three glowing green bottles of chemicals, with a space where a fourth bottle can be placed

Text says "New job openings" and "See all recruitment opportunities by visiting cruk.manchester.ac.uk/careers/"
Reposted by Debbie Caswell
drwilliamhill.bsky.social
Thrilled to announce I'm moving to Manchester to lead the Cancer Origins group! If you're interested in how mutations and exposures drive tumourigenesis — come join the adventure
cruk-mi.bsky.social
We are recruiting two exciting #Postdoctoral roles:

🧪 Work with @clausjorgensen.bsky.social on targeting the tumour #microenvironment in #PancreaticCancer

🥼 Join @drwilliamhill.bsky.social to study air pollution & #LungCancer

Full details of both positions at:
www.cruk.manchester.ac.uk/careers/
Photo shows three glowing green bottles of chemicals, with a space where a fourth bottle can be placed

Text says "New job openings" and "See all recruitment opportunities by visiting cruk.manchester.ac.uk/careers/"
Reposted by Debbie Caswell
pollyfordyce.bsky.social
Please apply to our tenure-track faculty position at
@stanford-chemh.bsky.social! We are searching for a new colleague working at the interface between computation and molecular sciences. See post below and pls forward widely!
chemh.stanford.edu/opportunitie...
Faculty Recruitment
chemh.stanford.edu
caswelldrm.bsky.social
I am thrilled to have received a UKRI Future Leaders Fellowship! This award will enable my laboratory to uncover how our body's natural antiviral defences, including APOBEC3 enzymes, contribute to the earliest stages of lung cancer. 🧪 www.ukri.org/news/ukri-an...
UKRI announces winners of £120 million Future Leaders Fellowships
Research into the causes of lung cancer and Alzheimer’s disease are among 77 projects to be funded by UKRI’s Future Leaders Fellowships.
www.ukri.org
Reposted by Debbie Caswell
jamesreading.bsky.social
🚨 PhD Position available in our lab 🚨 exploring the power of blood immune multi-omics to detect lung cancer years prior to clinical diagnosis in a unique cohort of >10,000 CT screened individuals.
✅ Wet & dry lab
✅ September 2025 enrolment
✅ UK tuition fees only

www.ucl.ac.uk/medical-scie...
Pre-Cancer Immunology
The Pre-Cancer Immunology Lab (James Reading Lab) is mapping pre-invasive T cell dynamics during carcinogenesis to detect and intercept cancer development.
www.ucl.ac.uk
Reposted by Debbie Caswell
natureportfolio.nature.com
A study in Nature shows that respiratory viruses trigger metastatic breast cancer cells to proliferate in lungs in mouse models of breast cancer. These findings are supported by human observational data. go.nature.com/4l7NZ8l #medsky 🧪
This is figure 2, which shows influenza A virus infection promotes dormant DCC proliferation and phenotypic change.
caswelldrm.bsky.social
Beautiful work!
buissonlab.bsky.social
Today, we report that APOBEC3B targets unprotected single-stranded DNA at replication forks upon ATR inhibition, triggering a reaction cascade involving UNG2 and APE1 that leads to fork collapse and hyperactivation of PARP1, causing replication catastrophe.
www.science.org/doi/10.1126/...
Mechanism of DNA replication fork breakage and PARP1 hyperactivation during replication catastrophe
Upon ATR inhibition, APOBEC3B targets unprotected single-stranded DNA at replication forks, leading to fork breakage.
www.science.org
Reposted by Debbie Caswell
jeffreytownsend.bsky.social
Our data-driven analysis indicates that inhibition of APOBEC activity would substantially extend therapeutic efficacy 🧪, with the degree of benefit varying based on patient-specific APOBEC mutagenesis levels.

www.sciencedirect.com/science/arti...
APOBEC rate averages versus time gained. This scatter plot illustrates the positive relationship between the average APOBEC rate across sites within patients and the corresponding time gained in each patient. The dashed line is a linear regression trend. This inferred relationship is fairly strong (slope = 1.3) and is statistically significant (P = 0.005) with n = 15 points.
Reposted by Debbie Caswell
jeffreytownsend.bsky.social
By analyzing tumor sequence data to infer gene-specific and patient-specific mutation rates, we used (for the first time) some straightforward mathematics of mutation rates to project the delay of resistance obtained by suppression of APOBEC mutation 🧪.

www.sciencedirect.com/science/arti...
Expected time until the first resistance mutation without complete suppression of APOBEC (purple bars) and with complete suppression of APOBEC (black bars) in each patient, expressed in molecular clock units, and the consequent expected percentage of time that could have been gained before resistance arose with APOBEC inhibited. Resistance-associated variants were identified by Caswell et al. and Isozaki et al. in each patient
Reposted by Debbie Caswell
jeffreytownsend.bsky.social
@alkpositiveuk.bsky.social—ALK resistance mutations show greater APOBEC attribution than e.g. EGFR mutations. Therefore, patients with ALK+ tumors would benefit more from therapies suppressing APOBEC activity 🧪.

www.sciencedirect.com/science/arti...
Mutational signature weights (potential mutational processes) underlying TKI resistance-associated gene variants in non-small-cell lung cancer patient samples, sorted by descending attribution to A3A/A3B processes.
Reposted by Debbie Caswell
jeffreytownsend.bsky.social
We estimated the contribution of APOBEC to mutational signatures in the twenty-one NSCLC patients that featured detailed clinical records of TKI treatment 🧪 and tissue sampling during or after treatment or at autopsy.

www.sciencedirect.com/science/arti...
Mutational signature weights (potential mutational processes) underlying TKI resistance-associated gene variants in non-small-cell lung cancer patient samples, sorted by descending attribution to A3A/A3B processes.
caswelldrm.bsky.social
Thanks for mentioning our article @jeffreytownsend.bsky.social. Your paper projecting how APOBEC inhibition could improve outcomes in patients with non-small cell lung cancer is fascinating!