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Binimetinib and Palbociclib Before Surgery for the Treatment of Operable KRAS-Positive Lung, Colorectal, or Pancreatic Cancer

ABSTRACT: This early phase I trial studies the direct effects on cancer cells of the drugs binimetinib and palbociclib, in patients with KRAS-positive lung, colorectal, or pancreatic cancer that can be removed by surgery (operable). Binimetinib and palbociclib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving binimetinib and palbociclib may halt the growth of cancer cells and improve access of the immune system cells, a patient’s own cells that fight infection and cancer, into the tumor.

DISEASE(S): Colorectal Carcinoma,Lung Adenocarcinoma,Carcinoma,Malignant Solid Neoplasm,Colorectal Neoplasms,Adenocarcinoma Of Lung,Pancreatic Neoplasms,Pancreatic Carcinoma

PROVIDER: 2376238 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Binimetinib and Palbociclib or TAS-102 in Treating Patients With KRAS and NRAS Mutant Metastatic or Unresectable Colorectal Cancer

Project description:This phase II trial studies how well binimetinib and palbociclib work compared to TAS-102 in treating patients with KRAS and NRAS mutation positive colorectal cancer that has spread to other places in the body (metastatic) or cannot be removed by surgery (unresectable). Binimetinib and palbociclib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as TAS-102, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving binimetinib and palbociclib may work better compared to TAS-102 alone in treating patients with colorectal cancer.

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Palbociclib With Cisplatin or Carboplatin in Advanced Solid Tumors

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Project description:To understand how Palbociclib (a CDK4/6 inhibitor) treatment changes the transcriptome of hematopoietic stem and progenitor cells, wildtype cells were isolated from mice and treated for 24h with either PBS (control) or Palbociclib. After 24h of culture, the cell suspensions were collected and sorted for lineage-negative, Sca1-positive, cKit-positive (LSK) cells which were subjected to library prep for single cell RNA sequencing.

2024-05-22 | E-MTAB-13268 | biostudies-arrayexpress

TRIB3 inhibition by palbociclib sensitizes prostate cancer to ferroptosis via SOX2-mediated SLC7A11 downregulation

Project description:Palbociclib is a CDK4/6 inhibitor approved for the treatment of breast cancer by suppressing cell proliferation. However, monotherapy with palbociclib was discouraging in prostate cancer, calling for a mechanism-based effective therapy. In this study, we reported in prostate cancer that palbociclib is a potent sensitizer of ferroptosis, which is worked out by downregulating the expression of TRIB3, a gene highly expressed in prostate cancer. Specifically, TRIB3 knockdown augmented the response of prostate cancer cells to ferroptosis inducers, whereas, TRIB3 overexpression rescued prostate cancer cells from palbociclib-induced ferroptosis. Mechanistically, TRIB3 inhibition by palbociclib resulted in downregulation of SOX2, which subsequently led to compromised expression of SLC7A11, a cystine/glutamate antiporter that counteracts ferroptosis. Functionally, a combined treatment of palbociclib with ferroptosis inducer significantly suppressed prostate cancer growth in a xenograft tumor model. Together, these results uncover an essential role of TRIB3/SOX2/SLC7A11 axis in palbociclib-induced ferroptosis, suggesting palbociclib a promising targeted therapy in combine with ferroptosis induction for the treatment of prostate cancer.

2024-10-31 | GSE273622 | GEO

Gene expression profiles between the palbociclib monotherpy versus palbociclib alternating with ICI182,780 treatment in breast cancer cells at 10 weeks.

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2023-04-10 | GSE229002 | GEO

Gene expression alterations associated with acquired-resistance to the CDK4/6 inhibitor palbociclib [Palbociclib resistance_RNASeq]

Project description:RNA-seq was performed to compare the transcriptional programmes of palbociclib-resistant A375 and CHL1 cells compared to their parental counterparts Cyclin dependent kinase 4/6 (CDK4/6) inhibitors are an established treatment in estrogen receptor positive breast cancer and are currently in clinical development in melanoma; a tumour that exhibits high rates of CDK4 activation. We analyzed melanoma cells with acquired resistance to the CDK4/6 inhibitor palbociclib, and demonstrated that palbociclib-mediated inhibition of PRMT5 is essential for sensitivity to CDK4/6 inhibitors. Mechanistically, by inhibiting PRMT5 activity, palbociclib alters MDM4 pre-mRNA splicing leading to decreased MDM4 protein expression and subsequent p53 activation. In turn, p53 increases p21 leading to inhibition of CDK2, the main kinase substituting for CDK4/6 and a key driver of resistance to palbociclib. Loss of the ability of palbociclib to regulate the PRMT5-MDM4 axis leads to resistance. Importantly, combining palbociclib with the PRMT5 inhibitor GSK3326595 enhances the efficacy of palbociclib in treatment naïve and resistant models and also delays the emergence of resistance. Our studies have uncovered a novel mechanism of action of CDK4/6 inhibitors in regulating the MDM4 oncogene and the tumor suppressor, p53. Furthermore, we have established that palbociclib inhibition of the PRMT5-MDM4 axis is essential for robust melanoma cell sensitivity and provide pre-clinical evidence that co-inhibition of CDK4/6 and PRMT5 is an effective and well tolerated therapeutic strategy. Overall our data provides a strong rationale for further investigation of novel combinations of CDK4/6 and PRMT5 inhibitors in not only melanoma but other tumour types including breast, pancreatic and esophageal carcinoma.

2019-08-23 | GSE133567 | GEO

Potent anti-tumor efficacy of palbociclib in H3K27M-mutant diffuse intrinsic pontine glioma

Project description:Diffuse intrinsic pontine glioma (DIPG) is a rare and fatal pediatric brain cancer without cure. DIPG has high percentage histone mutation at K27M on histone H3 locus, which is believed to be one of the drivers of the tumorigenesis. Dysregulation of G1/S cell cycle checkpoint is more enriched in the H3.3K27M mutant subgroup. In this study, we reported that palbociclib (PD0332991), a specific and cytostatic inhibitor of CDK4/6, effectively suppresses the growth of DIPG cells in vitro and in vivo. We established patient derived cell lines from treatment-naïve specimens, which all have H3.3K27M mutation. And our DIPG cell lines with H3.3K27M mutation have high CDK4/6 expression. Then, we showed that depletion of CDK4 or CDK6 inhibits DIPG cells growth and blocks G1/S transition. Furthermore, palbociclib effectively repressed all 8 cell lines self-renewal, proliferation and cell cycle progression from G1 to S phase in vitro. Transcriptome analysis showed that palbociclib not only blocks G1/S transition, it also blocks other oncogenic targets such as Myc. Finally, palbociclib activity was assayed in vivo against DIPG orthotropic xenografts to demonstrate the high efficiency of blocking tumor growth. Our findings revealed that palbociclib could be the therapy strategy for DIPG.

2019-06-20 | GSE115976 | GEO

O-GlcNAcylation promotes Palbociclib resistance in breast cancer by regulating MITF nuclear translocation

Project description:Cyclin-dependent kinases 4 and 6 (CDK4/6) are essential drivers of the cell cycle and are also critical for the initiation and progression of diverse malignancies. Pharmacological inhibitors targeting CDK4/6 have demonstrated significant activity against various tumor types such as breast cancer. However, resistance to CDK4/6 inhibitors (CDK4/6i) (such as palbociclib) remains an immense obstacle in clinical and the underlying mechanisms have not been fully understood. Using quantitative high-throughput combinational screen (qHTCS) and genomic sequencing, we report that the Microphthalmia-associated transcription factor (MITF), was significantly elevated in palbociclib-resistance cells. Inhibition of MITF can enhance the therapeutic efficacy of Palbociclib and surmount Palbociclib resistance both in vitro and in vivo. Then we found that MITF is interacting with OGT in Palbociclib-resistance cells, and we also identified that Ser49 is the main O-GlcNAc site of MITF. O-GlcNAc of MITF is critical to mediated Palbociclib-resistance in cells.

2024-05-30 | PXD042763 | Pride

Palbociclib releases the latent differentiation capacity of neuroblastoma cells [H3K27ac ChIP-seq palbociclib]

Project description:Palbociclib releases the latent differentiation capacity of neuroblastoma cells [H3K27ac ChIP-seq palbociclib]

| PRJNA892940 | ENA

Palbociclib interferes with origin firing in a pRb independent manner

Project description:Over the last decade, CDK4/6 inhibitors (palbociclib, ribociclib and abemaciclib) have emerged as promising anticancer drugs. Numerous studies have demonstrated that CDK4/6 inhibitors efficiently block the pRb-E2F pathway and induce cell cycle arrest in pRb-proficient cells. Based on these studies, the inhibitors have been approved by the FDA for treatment of advanced hormonal receptor (HR) positive breast cancers in combination with hormonal therapy. However, some evidence has recently shown unexpected effects of the inhibitors, promoting needs to understand more about the mechanism of inhibitors beyond pRb. Our study demonstrates here for the first time how palbociclib impairs the origin firing in the DNA replication process in pRb-deficient cell lines. Strikingly, despite the absence of pRb, cells treated with palbociclib synthesize less DNA without any induced cell cycle arrest. Furthermore, palbociclib treatment disturbs the temporal program of DNA replication and reduces the density of replication forks. Cells treated with palbociclib show a defect in the loading of proteins of the Pre-initiation complex (Pre-IC) on chromatin, indicating a reduced initiation of DNA replication. Our findings highlight hidden effects of palbociclib on the dynamics of DNA replication and on its cytotoxic consequences on cell viability in the absence of pRb. This study provides a potential therapeutic application of palbociclib to target genomic instability towards pRb deficient patient

2023-07-01 | GSE180530 | GEO

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