bims-meluca 2023-06-11 papers

J Nutr Biochem. 2023 Jun 02. pii: S0955-2863(23)00132-8. [Epub ahead of print] 109399

High glucose enhances the aggressiveness of lung adenocarcinoma via activating epidermal growth factor receptor/signal transducer and activator of transcription 3 pathways.

Supannika Sorin, Yubin Zhou, Kanyarat Thithuan, Kullanat Khawkhiaw, Fuchun Zeng, Tummarat Ruangpratyakul, Surang Chomphoo, Wunchana Seubwai, Sopit Wongkham, Charupong Saengboonmee.

Epidemiological studies revealed hyperglycemia as a poor prognostic factor for lung adenocarcinoma with unclear molecular mechanisms. The present study thus aimed to investigate the effects of high glucose on the progression of lung adenocarcinoma and its underlying mechanisms. Lung adenocarcinoma cell lines, A549 and RERF-LC-KJ, were cultured in 5.6 mM glucose (normal glucose; NG) or 25 mM glucose (high glucose; HG) resembling euglycemia and hyperglycemia. Cells were examined for proliferation by the MTT assay, and migration-invasion using Transwell. The expressions of signaling proteins in epidermal growth factor receptor (EGFR) pathways and their downstream targets were investigated using Western blots. The effects of diabetes mellitus (DM) and hyperglycemia on lung adenocarcinoma growth in vivo were studied in streptozotocin-induced diabetic BALB/cAJcl-Nu/Nu mice and their non-diabetic counterparts. High glucose significantly promoted proliferation, migration, and invasion of lung adenocarcinoma cells compared with those in normal glucose (P<0.05). Western blot analyses showed the increased ratio of pEGFR/EGFR in cells cultured in high glucose and subsequently activated the signal transducer and activator of transcription 3 (STAT3). Epithelial-mesenchymal (EMT) markers were also altered in lung adenocarcinoma cells in high glucose conditions, corresponding with increased migration and invasion abilities. Erlotinib, an EGFR inhibitor, significantly reversed high glucose-induced aggressive phenotypes confirming high glucose-enhancing lung adenocarcinoma progression via the activation of EGFR. DM and hyperglycemia also promoted the growth of lung adenocarcinoma xenografts in vivo in which erlotinib significantly suppressed the growth of tumors (P<0.05) suggesting EGFR inhibitor as an effective therapeutic agent for lung adenocarcinoma with DM.

Keywords: Cancer Progression; Diabetes mellitus; Epidermal Growth Factor Receptor; Hyperglycemia; Lung Cancer

DOI: https://doi.org/10.1016/j.jnutbio.2023.109399

Biochim Biophys Acta Gen Subj. 2023 Jun 06. pii: S0304-4165(23)00095-8. [Epub ahead of print] 130397

Multitranscript analysis reveals an effect of 2-deoxy-d-glucose on gene expression linked to unfolded protein response and integrated stress response in primary human monocytes and monocyte-derived macrophages.

Y S Tamayo-Molina, Paula A Velilla, Lady Johana Hernández-Sarmiento, Silvio Urcuqui-Inchima.

BACKGROUND: Glycolytic inhibitor 2-deoxy-d-glucose (2-DG) binds to hexokinase in a non-competitive manner and phosphoglucose isomerase in a competitive manner, blocking the initial steps of the glycolytic pathway. Although 2-DG stimulates endoplasmic reticulum (ER) stress, activating the unfolded protein response to restore protein homeostasis, it is unclear which ER stress-related genes are modulated in response to 2-DG treatment in human primary cells. Here, we aimed to determine whether the treatment of monocytes and monocyte-derived macrophages (MDMs) with 2-DG leads to a transcriptional profile specific to ER stress.METHODS: We performed bioinformatics analysis to identify differentially expressed genes (DEGs) in previously reported RNA-seq datasets of 2-DG treated cells. RT-qPCR was performed to verify the sequencing data on cultured MDMs.
RESULTS: A total of 95 common DEGs were found by transcriptional analysis of monocytes and MDMs treated with 2-DG. Among these, 74 were up-regulated and 21 were down-regulated. Multitranscript analysis showed that DEGs are linked to integrated stress response (GRP78/BiP, PERK, ATF4, CHOP, GADD34, IRE1α, XBP1, SESN2, ASNS, PHGDH), hexosamine biosynthetic pathway (GFAT1, GNA1, PGM3, UAP1), and mannose metabolism (GMPPA and GMPPB).
CONCLUSIONS: Results reveal that 2-DG triggers a gene expression program that might be involved in restoring protein homeostasis in primary cells.
GENERAL SIGNIFICANCE: 2-DG is known to inhibit glycolysis and induce ER stress; however, its effect on gene expression in primary cells is not well understood. This work shows that 2-DG is a stress inducer shifting the metabolic state of monocytes and macrophages.

Keywords: Endoplasmic reticulum stress; Human primary cells; Integrated stress response; Protein glycosylation; Unfolded protein response

DOI: https://doi.org/10.1016/j.bbagen.2023.130397

J Immunother Cancer. 2023 Jun;pii: e006833. [Epub ahead of print]11(6):

PEOPLE (NTC03447678), a phase II trial to test pembrolizumab as first-line treatment in patients with advanced NSCLC with PD-L1 <50%: a multiomics analysis.

BACKGROUND: Chemoimmunotherapy represents the standard of care for patients with advanced non-small cell lung cancer (NSCLC) and programmed death-ligand 1 (PD-L1) <50%. Although single-agent pembrolizumab has also demonstrated some activity in this setting, no reliable biomarkers yet exist for selecting patients likely to respond to single-agent immunotherapy. The main purpose of the study was to identify potential new biomarkers associated with progression-free-survival (PFS) within a multiomics analysis.METHODS: PEOPLE (NTC03447678) was a prospective phase II trial evaluating first-line pembrolizumab in patients with advanced EGFR and ALK wild type treatment-naïve NSCLC with PD-L1 <50%. Circulating immune profiling was performed by determination of absolute cell counts with multiparametric flow cytometry on freshly isolated whole blood samples at baseline and at first radiological evaluation. Gene expression profiling was performed using nCounter PanCancer IO 360 Panel (NanoString) on baseline tissue. Gut bacterial taxonomic abundance was obtained by shotgun metagenomic sequencing of stool samples at baseline. Omics data were analyzed with sequential univariate Cox proportional hazards regression predicting PFS, with Benjamini-Hochberg multiple comparisons correction. Biological features significant with univariate analysis were analyzed with multivariate least absolute shrinkage and selection operator (LASSO).
RESULTS: From May 2018 to October 2020, 65 patients were enrolled. Median follow-up and PFS were 26.4 and 2.9 months, respectively. LASSO integration analysis, with an optimal lambda of 0.28, showed that peripheral blood natural killer cells/CD56dimCD16+ (HR 0.56, 0.41-0.76, p=0.006) abundance at baseline and non-classical CD14dimCD16+monocytes (HR 0.52, 0.36-0.75, p=0.004), eosinophils (CD15+CD16-) (HR 0.62, 0.44-0.89, p=0.03) and lymphocytes (HR 0.32, 0.19-0.56, p=0.001) after first radiologic evaluation correlated with favorable PFS as well as high baseline expression levels of CD244 (HR 0.74, 0.62-0.87, p=0.05) protein tyrosine phosphatase receptor type C (HR 0.55, 0.38-0.81, p=0.098) and killer cell lectin like receptor B1 (HR 0.76, 0.66-0.89, p=0.05). Interferon-responsive factor 9 and cartilage oligomeric matrix protein genes correlated with unfavorable PFS (HR 3.03, 1.52-6.02, p 0.08 and HR 1.22, 1.08-1.37, p=0.06, corrected). No microbiome features were selected.
CONCLUSIONS: This multiomics approach was able to identify immune cell subsets and expression levels of genes associated to PFS in patients with PD-L1 <50% NSCLC treated with first-line pembrolizumab. These preliminary data will be confirmed in the larger multicentric international I3LUNG trial (NCT05537922).
TRIAL REGISTRATION NUMBER: 2017-002841-31.

Keywords: biomarkers, tumor; immunotherapy; non-small cell lung cancer

DOI: https://doi.org/10.1136/jitc-2023-006833

bioRxiv. 2023 May 18. pii: 2023.05.15.540823. [Epub ahead of print]

Tumor Cytokine-Induced Hepatic Gluconeogenesis Contributes to Cancer Cachexia: Insights from Full Body Single Nuclei Sequencing.

Ying Liu, Ezequiel Dantas, Miriam Ferrer, Yifang Liu, Aram Comjean, Emma E Davidson, Yanhui Hu, Marcus D Goncalves, Tobias Janowitz, Norbert Perrimon.

A primary cause of death in cancer patients is cachexia, a wasting syndrome attributed to tumor-induced metabolic dysregulation. Despite the major impact of cachexia on the treatment, quality of life, and survival of cancer patients, relatively little is known about the underlying pathogenic mechanisms. Hyperglycemia detected in glucose tolerance test is one of the earliest metabolic abnormalities observed in cancer patients; however, the pathogenesis by which tumors influence blood sugar levels remains poorly understood. Here, utilizing a Drosophila model, we demonstrate that the tumor secreted interleukin-like cytokine Upd3 induces fat body expression of Pepck1 and Pdk , two key regulatory enzymes of gluconeogenesis, contributing to hyperglycemia. Our data further indicate a conserved regulation of these genes by IL-6/JAK STAT signaling in mouse models. Importantly, in both fly and mouse cancer cachexia models, elevated gluconeogenesis gene levels are associated with poor prognosis. Altogether, our study uncovers a conserved role of Upd3/IL-6/JAK-STAT signaling in inducing tumor-associated hyperglycemia, which provides insights into the pathogenesis of IL-6 signaling in cancer cachexia.

DOI: https://doi.org/10.1101/2023.05.15.540823

Clin Cancer Res. 2023 Jun 08. pii: CCR-23-0375. [Epub ahead of print]

Targeting BCL2 overcomes resistance and augments response to aurora kinase B inhibition by AZD2811 in small cell lung cancer.

Kavya Ramkumar, Azusa Tanimoto, Carminia M Della Corte, C Allison Stewart, Qi Wang, Li Shen, Robert J Cardnell, Jing Wang, Urszula M Polanska, Courtney Andersen, Jamal Saeh, J Elizabeth Pease, Jon Travers, Giulia Fabbri, Carl M Gay, Jelena Urosevic, Lauren A Byers.

PURPOSE: Therapeutic resistance to frontline therapy develops rapidly in small cell lung cancer (SCLC). Treatment options are also limited by the lack of targetable driver mutations. Therefore, there is an unmet need for developing better therapeutic strategies and biomarkers of response. AURKB inhibition exploits an inherent genomic vulnerability in SCLC and is a promising therapeutic approach. Here, we identify biomarkers of response and develop rational combinations with AURKB inhibition to improve treatment efficacy.EXPERIMENTAL DESIGN: Selective AURKB inhibitor AZD2811 was profiled in a large panel of SCLC cell lines (n=57) and patient-derived xenograft (PDX) models. Proteomic and transcriptomic profiles were analyzed to identify candidate biomarkers of response and resistance. Effects on polyploidy, DNA damage and apoptosis were measured by flow cytometry and western blotting. Rational drug combinations were validated in SCLC cell lines and PDX models.
RESULTS: AZD2811 showed potent growth inhibitory activity in a subset of SCLC, often characterized by, but not limited to, high cMYC expression. Importantly, high BCL2 expression predicted resistance to AURKB inhibitor response in SCLC, independent of cMYC status. AZD2811-induced DNA damage and apoptosis were suppressed by high BCL2 levels, while combining AZD2811 with a BCL2 inhibitor significantly sensitized resistant models. In vivo, sustained tumor growth reduction and regression was achieved even with intermittent dosing of AZD2811 and venetoclax, an FDA approved BCL2 inhibitor.
CONCLUSIONS: BCL2 inhibition overcomes intrinsic resistance and enhances sensitivity to AURKB inhibition in SCLC preclinical models.

DOI: https://doi.org/10.1158/1078-0432.CCR-23-0375

Discov Med. 2023 Jun;35(176): 321-331

Efficacy of PD-1 Inhibitors Combined with Anti-Angiogenic Therapy in Driver Gene Mutation Negative Non-Small-Cell Lung Cancer with Brain Metastases.

Jia-Qi Song, Xia Wang, Zhi-Min Zeng, Ping-An Liang, Cong-Ying Zhong, An-Wen Liu.

OBJECTIVE: Anti-angiogenic therapy has proven effective in non-small-cell lung cancer (NSCLC) patients. The purpose of this study was to evaluate the efficacy of programmed cell death protein 1 (PD-1) inhibitors combined with anti-angiogenic therapy in patients with driver gene mutation negative NSCLC and brain metastases (BMs).METHODS: A retrospective analysis was performed on NSCLC BMs in patients without driver gene mutations who received PD-1 inhibitors. Two groups, receiving either PD-1 inhibitor monotherapy or PD-1 inhibitor plus anti-angiogenesis therapy, were identified. The primary endpoints were overall survival (OS) and intracranial progression-free survival (iPFS). The secondary endpoints were safety, intracranial objective response rate (iORR) and intracranial disease control rate (iDCR).
RESULTS: 113 NSCLC patients were included, 51 (45.1%) in the PD-1 inhibitor monotherapy group and 62 (54.9%) in the PD-1 inhibitor plus anti-angiogenesis therapy group. The median follow-up time was 26.2 months. OS was higher in the combination therapy cohort than in the monotherapy cohort (OS: 21.4 vs. 11.8 months; p = 0.004), with no significant difference in iPFS (p = 0.088). Moreover, the PD-1 inhibitor + anti-angiogenic therapeutic regimen exhibited the preferred iDCR (p = 0.005) but not the iORR (p = 0.121). There was no significant difference in the incidence of grade 3-4 adverse events between the two groups. In multivariate Cox regression analysis, PD-1 inhibitor therapy combined with anti-angiogenic treatment (p = 0.003) was an independent prognostic indicator of OS.
CONCLUSIONS: Combining PD-1 inhibitor therapy with anti-angiogenic treatment significantly improves the OS of driver gene mutation negative NSCLC patients with BMs.

Keywords: PD-1 inhibitors; anti-angiogenic; brain metastases; non-small-cell lung cancer

DOI: https://doi.org/10.24976/Discov.Med.202335176.33