HCI-032-EI breast cancer PDX

Breast cancer patient derived xenograft PDX

Contributors

Inventor Institute
Alana L Welm, Yi-Chun Lin, Yoko Sakata DeRose The University of Utah Research Foundation
Cat. #: 162098
Cancer types: Breast cancer
Gender: Female
Biopsy Site: Breast (reccurent)
Patient ethnicity: Caucasian
Treatment History: Pretreated: Patient had not undergone radiation therapy prior but had received systemic treatment of docetaxel, trastuzumab, pertuzumab 2015-2016, and tamoxifen 2016 prior to sample collection
Primary citation: Guillen, et al. 2022. Nature Cancer. Feb; 3(2):232-250. PMID: 35221336
Product description: Human breast cancer patient-derived xenograft (PDX) model that retains high fidelity to original tumour, including spatial structure, intratumour heterogeneity, genomic features, tumour growth rate, metastatic patterns, and drug responses. These highly translatable PDX models can be used to more accurately assess therapeutic efficacy and predict patient responses in preclinical drug validation studies than traditional models. This panel of PDX models includes some of the deadliest forms of breast cancer such as drug-resistant, metastatic tumours, and endocrine-resistant estrogen receptor-positive (ER+) and human epidermal growth factor receptor positive (HER2+) tumours. Sample collected in 2017 from breast tumour recurrence of Caucasian female, age 53 at time of collection with a primary diagnosis of IDC 2015. Patient was a former smoker and had clinical metastasis in lung, brain, and pelvis detected. Patient had not undergone radiation therapy prior but had received systemic treatment of docetaxel, trastuzumab, pertuzumab 2015-2016, and tamoxifen 2016 prior to sample collection. Patient and PDX characteristics were as follows – ER status: positive, PR status: positive, HER2 status: positive. PDX information: Generated from HCI-032 2 years later and grown in OVX mice. Not estrogen dependent, PAM50 subtype not done, and metastasis tests not done.
Initial handling information: Implant into the cleared inguinal mammary fat pad of female Immune-compromised mice NSG (fresh). NSG time to growth: 7 months to 2 cm. Positive ER status
Additional notes: Additional Information on PDX establishment: https://www.nature.com/articles/s43018-022-00337-6/figures/9
Mice Passaged: Yes
Engraftment Site: Cleared mammary fat pad
Sample Type: HCI-032 PDX Tissue Fragment
Host Strain: Immunocompromised mice NOD scid gamma (NSG) Jackson Laboratory 5557; NOD/scid, Jackson Laboratory 1303 or NOD rag gamma (NRG), Jackson Laboratory 7799
Production details: Fresh or thawed human breast tumour fragments were implanted into the cleared inguinal mammary fat pad of female Immune-compromised mice. For bone metastasis samples, bone fragments were coimplanted. For liquid specimens, pleural effusion, or ascites fluid, 1-2 milion cells were injected into cleared mammary fat pads in Matrigel. For ER+ tumours, mice were dosed with E2 beeswax pellets and given supplemental E2 via drinking water. When tumours reached 1-2 cm in diameter, tumours were aseptically collected and reimplanted into new m ice or banked. Estrogen-independent ER+ breast PDX models were generated when ER+ PDX tumours were transplated into overiectomized mice without E2 supplementation.
References:

Tufail, et al. 2024. Journal of Translational Med. Jan 3:22(1):15. PMID: 38172946

Bhattacharya, et al. 2023. Journal of Experimental & Clinical Cancer Research. Dec 16:42(1):343. PMID: 38102637

Prekovic, et al. 2023. EMBO Molecular Medicine. Dec 7:15(12):e17737. PMID: 37902007

Daneshdoust, et al. 2023. Cells. Sep 30:12(19):2338. PMID: 37830602

Wang, et al. 2023. Cell Bioscience. Dec 1:13(1):224. PMID: 38041134

Guillen, et al. 2022. Nature Cancer. Feb 3(2):232-250. PMID: 35221336

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