bluuebunny/crossref_metadata_2025_split huggingface dataset:
Abstract 1695: Guanylate binding protein 1 modulate the proteasomal machinery and causes the cytochrome C degradation
Authors: Tailor Dhanir , Garcia-Marques Fernando Jose , Bermudez Abel , Pitteri Sharon J. , Malhotra Sanjay V. 
Published: June 2023

Abstract
Guanylate Binding Protein 1 (GBP1) is known as an interferon γ induced GTPase. It plays a crucial role in innate immunity against pathogenic infections but its role in cancer and therapeutic response is not well understood. Therefore, to study the role of GBP1, we investigated genetically manipulated ovarian cancer cells. We have employed in vitro and in vivo studies along with a proteomics approach to uncover the protein-protein interactions and their crosstalk with GBP1. The data suggest that GBP1 knockdown (KD) inhibits the clonogenic potential of cancer cells. In vivo studies including subcutaneous xenograft and intraperitoneal models revealed that GBP1 overexpressing (OV) tumor cells growing faster and reduce the median survival of animals compared to vehicle control (VC). Whereas GBP1 KD tumors were progressing slowly with longer median survival compared to scrambled control (SC). To study the molecular interactions of GBP1, we performed a proteomics-based Cellular thermal shift assay (CETSA) on GBP1 OV and KD ovarian cancer cells. We found that GBP1 interacts with members of proteasome including PSMB1, PSMB6, PSMA3, and Cytochrome C (CYCS). Protein analysis showed that GBP1 over-expressing cells had less ubiquitinylated proteins compared to VC, whereas GBP1 KD cells accumulate the ubiquitinylated proteins compared to SC. We also found that the GBP1 KD cells are sensitive to paclitaxel treatment and accumulated ubiquitinylated proteins compared to SC. Moreover, GBP1 KD inhibits the overall proteasomal activity. Paclitaxel-treated GBP1 OV cells accumulated the ubiquitination of CYCS, followed by clearance of cytosolic CYCS. Furthermore, global proteome profiling also suggests that GBP1 KD induces apoptotic pathways whereas GBP1 OV induces pathways associated with the stress response. Overall, the results from our studies elucidate the role of GBP1 in chemotherapeutic stress response via the activation of proteasomal machinery.
Citation Format: Dhanir Tailor, Fernando Jose Garcia-Marques, Abel Bermudez, Sharon J. Pitteri, Sanjay V. Malhotra. Guanylate binding protein 1 modulate the proteasomal machinery and causes the cytochrome C degradation [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 1695.
Abstract 1708: Sex-biased function of an oncogene, YAP1, regulates medulloblastoma stem cells and immune evasion
Authors: Abdelfattah Nourhan , Natarajan Sivaraman , Maldonado Jose , Tran Han Nhat , Borland Hannah , McMinimy Rachael , Chen Shu-Hsia , Camargo Fernando , Olson James , George Joshy , Yun Kyuson 
Published: June 2023

Abstract
Sex disparity in both cancer incidence and response to therapeutics, especially immunotherapy, has become an important area of research in recent years. Brain tumors show obvious sex biases in incidence and therapy response. Medulloblastoma (MB) is the most common malignant pediatric brain tumor, and similar to other brain tumors, males have consistently higher incidence across all subgroups and at all ages. Moreover, for patients &gt;3 years of age, females have significantly better outcomes than males. However, molecular drivers of such sex disparity in incidence and prognosis remain unclear.Here, we report a male-biased function of an oncogene, YAP1, in MB formation and immune suppression. Integrated multi-platform genomic, transcriptomic, proteomic, and in vivo transcriptional target analyses show that YAP1 promotes cancer stem cell maintenance through concurrent transcriptional activation of stemness genes, such as Sox2, and repression of differentiation regulators such as NeuroD1 and Zic1/2. YAP1 expression in MB cells also inhibits anti-tumor immune cell infiltration by directly regulating Csf1, Igf1, and Igfbp3 transcription and modulating IL6-JAK-STAT3, TNFR1, TGFb, and CCL5 Pathways. Notably, we found that YAP1 genetic deletion results in disproportionately higher survival of males than females in a spontaneous mouse model of infantile SHH MB, despite equivocal expression levels in both sexes. Consistent with our findings in mouse models, YAP1 downstream genes stratify MB patient survival in males but not females. Finally, we show that a brain-penetrant YAP1 inhibitor, verteporfin, extends survival and enhances immune infiltrates in vivo, mimicking the effects of Yap1 genetic deletion. In summary, this study demonstrates that an oncogene function may be sex-biased and underscores the need to incorporate sex as a variable in cancer mechanisms, tumor immunology, and treatment response studies.
Citation Format: Nourhan Abdelfattah, Sivaraman Natarajan, Jose Maldonado, Han Nhat Tran, Hannah Borland, Rachael McMinimy, Shu-Hsia Chen, Fernando Camargo, James Olson, Joshy George, Kyuson Yun. Sex-biased function of an oncogene, YAP1, regulates medulloblastoma stem cells and immune evasion [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 1708.
Abstract 1709: MAPK pathway alterations are a targetable vulnerability in bladder cancer
Authors: Bekele Raie , Samant Amruta , Hanlon Timothy , Mouw Kent 
Published: June 2023

Abstract
Bladder cancer (BC) is the fourth most common cancer in males and accounts for about 80,000 new cases in the US. Approximately 25% patients with BC will present with muscle-invasive bladder cancer (MIBC) and for the past several decades the standard-of-care for MIBC and metastatic bladder cancer has been cisplatin-based chemotherapy. More recently, multiple immunotherapeutic agents have been approved but only a subset of patients respond to these treatments and therefore novel therapeutic strategies are needed to expand treatment options and improve clinical outcomes for BC patients. Large-scale genomic studies of MIBC have identified numerous recurrent genomic alterations including mutations, copy number alterations, and chromosomal translocations. Using publicly available patient datasets, we identified ~20% of MIBC patients harboring alterations in genes involved in the mitogen-activated protein kinase (MAPK) pathway and their upstream activators. RAF1 copy number amplification was the most predominant alteration followed by activating HRAS mutations. Leveraging our institutional cohorts of bladder cancer specimens, we defined the frequency of these alterations and validated RAF1 amplification in a subset of cases using fluorescence in situ hybridization. To functionally define the role of MAPK pathway alterations in BC, we tested activity of RAF and MEK inhibitors in BC cell line models with diverse MAPK pathway alterations including RAF1 amplification and HRAS/NRAS mutations. We found that these MAPK pathway altered models displayed increased sensitivity to RAF/MEK inhibition compared to MAPK-unaltered models. We further demonstrated the feasibility of preclinically targeting these alterations in mouse models of BC using cell line and patient-derived-xenografts. Additionally, we tested the impact of MAPK pathway modulation on tumor extrinsic properties including changes in the tumor microenvironment that could potentially affect responses to immunotherapeutic agents. Taken together, we have identified MAPK pathway alterations as a novel dependency in BC that can be targeted with emerging RAF inhibitors.
Citation Format: Raie Bekele, Amruta Samant, Timothy Hanlon, Kent Mouw. MAPK pathway alterations are a targetable vulnerability in bladder cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 1709.
Abstract 1716: A small molecule corrector for p53 mutants found in cancer
Authors: Fallatah Maryam Mohammed J , Demir Özlem , Amaro Rommie , Kaiser Peter 
Published: June 2023

Abstract
p53 is the main tumor suppressor protein in vertebrates and the most frequently mutated gene in human cancers. The majority of p53 mutations are missense mutations resulting in the expression of full-length p53 with inactive tumor suppressor function. Small molecule corrector drugs that change the mutant p53 conformation to a wild-type-like structure are attractive goals for personalized, targeted cancer therapies. Our previous work has shown that restoring p53 activities represses cancer cells and tumor growth in vitro and in vivo. This and other work suggest that reactivation of p53 could have therapeutic potential for cancer patients with mutated p53. This study aims to investigate a new potential p53 corrector small molecule, UCI-1001. Our data suggest that treatment of p53 mutant cancer cell lines with compounds of the UCI-1001 series inhibits cell growth in a p53 mutant-dependent manner and induces some p53-wild-type like activities such as mutant p53 DNA binding, transcriptional activation of p53 target genes, and induction of cell death. Utilizing the cellular thermal shift assay, CETSA, we show that UCI-1001 binds mutant p53 in vivo and changes mutant p53 conformation to a wild-type-like structure. Taken together, these preliminary results suggest the UCI-1001 series is a promising candidate for the development of p53 corrector drugs, but further development of pharmacokinetic properties will be necessary for translation to the bedside.
Citation Format: Maryam Mohammed J Fallatah, Özlem Demir, Rommie Amaro, Peter Kaiser. A small molecule corrector for p53 mutants found in cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 1716.
Abstract 2112: Reporting recommendations for translational cancer genomic studies
Authors: Casolino Raffaella , Beer Philip A. , Normanno Nicola , Sondka Zbyslaw , Biankin Andrew V. 
Published: June 2023

Abstract
Background. Inaccuracy and widespread deficiencies in the reporting of translational cancer genomic studies is common and represents a major issue of cancer research. It challenges not only the study interpretation but also the ability to accurately compare studies. The REMARK (REporting recommendations for tumour MARKer prognostic studies) guideline was previously developed to improve the reporting of tumour biomarker prognostic studies. However, it presents several limitations as many aspects of omic-based research are missing. We developed a new guideline to ensure transparency and standardized reporting of clinical cancer genomic studies.
Methods. The concept for this checklist was generated after extensive review of current literature which identified major gaps in study reporting, including: insufficient information about study design, population included, and treatments; inappropriate analysis methods; and widespread deficiencies in the reporting of results. Key elements to be addressed in the new checklist were identified by experts in methodology, biostatistics, and preclinical, translational, and clinical cancer genomics (proposing panel). Several reporting guidelines produced for other types of medical research studies were also reviewed.
Results. A preliminary draft of the proposed checklist was discussed during the 18th workshop of the International Cancer Genome Consortium (ICGC) in Verona, Italy (13-14 June 2022). Building on that work, the checklist was then re-discussed and improved by the proposing panel. This will serve as a starting point for further discussion among the ICGC, REMARK, the Catalogue Of Somatic Mutations In Cancer (COSMIC), the International Quality Network for Pathology (IQN Path) and other organizations to collect any criticisms, make further revisions, and reach final consensus.
Conclusions. The proposed guideline provides a comprehensive overview to educate on good reporting of translational cancer genomic studies. It represents a valuable reference to consider when designing, conducting, and reporting this kinds of studies. After ICGC, REMARK, COSMIC, and IQN Path discussion, revision, and approval, the proposed checklist will be the new standard to be adopted by researchers, editors and reviewers. It will significantly impact future cancer research and patient care.
Citation Format: Raffaella Casolino, Philip A. Beer, Nicola Normanno, Zbyslaw Sondka, Andrew V. Biankin. Reporting recommendations for translational cancer genomic studies [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 2112.
Abstract 2216: Construction of a prognostic 6-gene signature for breast cancer based on multi-omics data
Authors: Xing Zeyu , Hong Yuting 
Published: June 2023

Abstract
Breast cancer (BC) is a heterogeneous disease. Distinguishing BC patients with different prognosis can help to make clinical strategies. In our study, we tried to identify novel prognostic genetic biomarkers for BC by using multi-omics data and establish a risk score (RS) signature with genetic biomarkers which have high predictive value. A combined significance (pcombined) of each gene was calculated by Fisher’s method based on the p value of the difference examination of the respective index in RNA-seq, CNV, and DNA methylation data of corresponding genes from TCGA-BRCA dataset. Genes with a pcombined &lt; 0.010 were subjected to univariate cox and Lasso regression to screen out hub genes, whereby a RS signature consisted of six genes, C15orf52, C1orf228, CEL, FUZ, PAK6, and SIRPG, was established. With the Kaplan-Meier (KM) method, the receiver operating characteristic curves (ROC), multivariate cox regression, Nomogram, and decision curve analysis (DCA), the predicted performance of the RS signature was assessed in TCGA-BRCA, GSE7390, and GSE20685. The predicted performance in TNBC patients was emphatically analyzed in TCGA-BRCA and GSE103091, while immune characteristics were also explored. Basing on the data from Genomics of Drug Sensitivity in Cancer (GDSC) database and related R package, we further examined the drug sensitivity of TNBC patients with different RS. With survival rates having significant differences in all KM analyses and most area under ROCs reaching 0.700, the RS signature could distinguish the prognosis of patients, even stratified by disease stages or subtypes. The RS also showed a stronger predictive ability than traditional clinical indicators, including age, tumor topology (T), regional lymph node (N), metastasis (M), and TNM stage. The down-regulated expressions of many immune checkpoints were observed in TNBC patients with higher RS, while the sensitivity of many antitumor drugs was reduced in those with higher RS, except for BI2536 (CAS No.: 755038-02-9), which demonstrated a smaller half maximal inhibitory concentration (which mean a higher drug sensitivity) in TNBC patients with higher RS. In conclusion, the six genes RS signature established based on multi-omics data exhibited well performance in predicting the prognosis of BC patients, regardless of disease stages or subtypes. Contributing to a more personalized treatment, the RS signature might benefit the outcome of BC patients.
Citation Format: Zeyu Xing, Yuting Hong. Construction of a prognostic 6-gene signature for breast cancer based on multi-omics data [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 2216.
Abstract 2910: NKG2A suppression enhances the function of primary human Natural Killer cells
Authors: Croom-Perez Tayler J. , Robles-Carrillo Liza D. , Hasan Md Faqrul , Copik Alicja J. 
Published: June 2023

Abstract
In this study we propose inhibition of NKG2A signaling enhances the anti-tumor response of primary human NK cells. One mechanism employed by tumor cells to evade immunosurveillance is through induction of the surface expression of unconventional HLA ligands that agonize inhibitory receptors on immune cells. Specifically on some tumors, HLA-E is either expressed or its expression is known to be induced by IFNγ and is indicative of resistance to immunotherapy. HLA-E agonizes the CD94/NKG2A inhibitory complex on NK cells and some T cells to lessen their cytotoxicity, potentially decreasing the efficacy of cellular therapy with these immune cells. In this study ex vivo-expanded primary human NK cells were shown to have significantly elevated expression of NKG2A. These expanded NK cells also secreted high levels of IFNγ and could induce expression of HLA-E on tumor cells. Suppression of NKG2A by either antibody blockade or gene deletion increased the cytotoxicity of NK cells against the lung cancer cell line A549 stably expressing HLA-E. NKG2A knockout cells had an almost 10-fold decrease in EC50 compared to wild-type NK cells (EC50 0.15 vs 0.94 at 48 h), meaning nearly log-fold fewer NKG2A knockout cells are needed to kill the same number of tumor cells. The effect of NKG2A knockout on cytotoxicity of NK cells against other cancer cell lines stably expressing HLA-E will be presented along with effects of NKG2A suppression on NK cell phenotype, cytokine secretion and degranulation. These initial data suggest that blockade of the CD94/NKG2A inhibitory complex can improve the function of ex vivo expanded human NK cells and could provide an effector population with the potential for enhanced therapeutic efficacy.
Citation Format: Tayler J. Croom-Perez, Liza D. Robles-Carrillo, Md Faqrul Hasan, Alicja J. Copik. NKG2A suppression enhances the function of primary human Natural Killer cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 2910.
Abstract 292: Effects of aqueous cinnamon extract on activity of SIRT1
Authors: Hrivnak William , Prak Khanneth , Speck Cecilia , Smith Courtney , Stockert Amy 
Published: June 2023

Abstract
SIRT1 has drawn attention recently due to its involvement in metabolism, aging, and cancer. SIRT1 is a deacetylase enzyme that has the ability to deacetylate histones as well as other non-histone targets including p53. Studies have shown that SIRT can act either as a tumor suppressor or tumor promoter depending on the cancer and its targets in signaling pathways. Recombinant SIRT1 was used to examine the effects of cinnamon extract on SIRT1 activity using the Epigenase(™) Universal SIRT activity/Inhibition Assay Kit. Here we demonstrate that under conditions of acidic extraction, cinnamon extract functions as an activator of SIRT1 activity. Under conditions of non-acidic extraction, SIRT1 activity was relatively unchanged and slightly reduced. Studies have suggested that polyphenolic compounds, like those found in cinnamon, may epigenetically affect MCF7 cells. Therefore our future work includes plans to determine if cinnamon extracted under acidic conditions alters the expression level of SIRT1. SIRT1 activity will also be examined following cinnamon extract pretreatment.
Citation Format: William Hrivnak, Khanneth Prak, Cecilia Speck, Courtney Smith, Amy Stockert. Effects of aqueous cinnamon extract on activity of SIRT1 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 292.
Abstract 3091: Discovery and development of a potent and highly selective WEE1 inhibitor IMP7068
Authors: Cai Sui Xiong , Ma Ning , Wang Xiaozhu , Jiang Yangzhen , Zhang Hongxia , Guo Mingchuan , Zhou Ruiyu , Tian Ye Edward 
Published: June 2023

Abstract
WEE1 is activated upon DNA damage and regulates the G2/M cell cycle checkpoints. Inhibition of WEE1, in conjunction with genetic alterations and/or a DNA damaging agent, could result in mitotic catastrophe and apoptosis of cancer cells, offering an attractive approach to treat cancer. Small molecule WEE1 inhibitors, such as AZD1775, showed good clinical POC (proof of concept) data in several tumors including ovarian, colon, and uterine carcinoma. We have identified a novel, potent, and highly selective WEE1 inhibitor IMP7068. Herein we will present its discovery and IND enabling in vitro and in vivo studies. IMP7068 exhibits superior WEE1/PLK1 selectivity (&gt;435 fold) compared to AZD1775. IMP7068 also shows potent cytotoxicity against a wide range of cancer cell lines. In addition, IMP7068 has desirable PK profiles with long half-life and high exposure in preclinical species. Anti-tumor efficacy of IMP7068 has been demonstrated in mice CDX models of colorectal LoVo, non-small cell lung cancer NCI-H1299 and a PDX model of uterine UT5318 with good dose-response tumor inhibition and tolerability. IMP7068 is currently in a phase I study to evaluate its safety, tolerability, pharmacokinetics, and anti-tumor activity in patients with advanced solid tumors (ClinicalTrials.gov Identifier: NCT04768868).
Citation Format: Sui Xiong Cai, Ning Ma, Xiaozhu Wang, Yangzhen Jiang, Hongxia Zhang, Mingchuan Guo, Ruiyu Zhou, Ye Edward Tian. Discovery and development of a potent and highly selective WEE1 inhibitor IMP7068 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3091.