Journal: bioRxiv

Article Title: IL-1-conferred gene expression pattern in ERα + BCa and AR + PCa cells is intrinsic to ERα − BCa and AR − PCa cells and promotes cell survival

doi: 10.1101/773978

Figure Lengend Snippet: RT-qPCR was performed for select genes for MCF7 and LNCaP cell lines treated with vehicle control or 25 ng/ml IL-1α or IL-1β for 5 days. MDA-MB-231, BT549, PC3 and DU145 cell lines were treated with vehicle control only. (A) RT-qPCR shows that CCL20 , CD68 , IL8 , p62 , SOX9 and Zeb1 are induced by IL-1 in MCF7 and/or LNCaP cell lines and are basally high in MDA-MB-231, BT549, PC3 and/or DU145 cell lines. (B) RT-qPCR shows that CXCR7 and MMP16 , but not CDK2 or PLK1 , are downregulated by IL-1 in MCF7 and/or LNCaP cell lines and are basally high in MDA-MB-231, BT549, PC3 and/or DU145 cell lines. N = 3 biological replicates; error bars, +/−STDEV; p-value, * ≤ 0.05, ** ≤ 0.005, ***≤ 0.0005. mRNA fold change is normalized to MCF7 vehicle control for the BCa cell lines and to LNCaP vehicle control for the PCa cell lines.

Article Snippet: Human recombinant IL-1α (GoldBio, St Louis MO; 1110-01A-100) and IL-1β (GoldBio, St Louis MO; 1110-01B-100) were resuspended in 0.1% bovine serum albumin (BSA, Thermo Fisher Scientific; BP 1600-1) in 1X phosphate buffered saline (PBS).

Techniques: Quantitative RT-PCR

Journal: The Journal of Neuroscience

Article Title: CD44 Signaling Mediates High Molecular Weight Hyaluronan-Induced Antihyperalgesia

doi: 10.1523/JNEUROSCI.2695-17.2017

Figure Lengend Snippet: Antihyperalgesic effect of HMWH. A, LMWH (1 μg) was injected intradermally on the dorsum of the hindpaw. Ten minutes later, HMWH (1 μg, black circles) or vehicle (open circles) was injected at the same site and the mechanical nociceptive threshold evaluated over time. Significant reversal of LMWH-induced hyperalgesia was observed in the group treated with HMWH (F(1.16) = 83.33, ****p < 0.0001, when both groups are compared, two-way repeated-measures ANOVA, followed by Bonferroni post hoc test). B, Four pronociceptive mediators, PGE2 (100 ng), epinephrine (epi, 100 ng), TNFα (100 ng), or IL-6 (10 ng), were injected intradermally on the dorsum of the hindpaw. Ten minutes after PGE2 and epinephrine, or 30 min after TNFα and IL-6, HMWH (1 μg, black bars) or vehicle (white bars) was injected at the same site. Measurement of the mechanical nociceptive threshold after an additional 30 min showed a significant attenuation of the hyperalgesia induced by all four pronociceptive mediators, in the groups treated with HMWH (PGE2 groups: t(10) = 5.676, ***p = 0.0001; epi groups: t(10) = 4.150, **p = 0.0010; TNFα groups: t(10) = 6.365, ****p < 0.0001; IL-6 groups: t(10) = 5.461, ***p = 0.0001, when the vehicle and HMWH groups are compared, unpaired Student's t test). C, Rats received four intraperitoneal injections of the neurotoxic chemotherapeutic drug paclitaxel (1 mg/kg), once every other day. Evaluation of mechanical nociceptive threshold 24 h after the last injection of paclitaxel showed robust mechanical hyperalgesia. Then HMWH (1 μg, black bar) or vehicle (white bar) was injected intradermally at the site of nociceptive testing on the dorsum of the hindpaw. Mechanical nociceptive threshold was again evaluated 30 min later. Whereas hyperalgesia was still observed in the vehicle-treated group, in the group that received HMWH, it was markedly attenuated (t(10) = 4.677, ###p = 0.0004, when control and HMWH groups are compared, unpaired Student's t test). A, Control group, n = 12 paws; HMWH group, n = 6. B, C, All groups, n = 6 paws.

Article Snippet: The following drugs were used in this study: hyaluronic acid sodium salt from Streptococcus pyrogenes (HMWH), from Calbiochem; epinephrine, prostaglandin E 2 (PGE 2 ), hyaluronic acid sodium salt from Streptococcus equi (LMWH), and the cancer chemotherapeutic agent paclitaxel, from Sigma-Aldrich; a peptide CD44 receptor agonist A6 ( Piotrowicz et al., 2011 ; Finlayson, 2015 ) from GenScript; rat recombinant interleukin-6 (IL-6) and rat recombinant TNFα, from R&D Systems; the selective activator of PKCε, psi ε Receptor for Activated C Kinase (ψεRACK), from Biomatik; and the potent membrane-permeable cAMP analog 8-bromo cAMP sodium salt (Tocris Bioscience).

Techniques: Injection

Journal: The Journal of Neuroscience

Article Title: CD44 Signaling Mediates High Molecular Weight Hyaluronan-Induced Antihyperalgesia

doi: 10.1523/JNEUROSCI.2695-17.2017

Figure Lengend Snippet: Antihyperalgesic effect of HMWH is CD44-dependent. A, Rats were treated daily with a spinal intrathecal injection of ODN sense or antisense for CD44 mRNA (120 μg) for 3 consecutive days. On the fourth day, TNFα (100 ng, left) or IL-6 (10 ng, right) was injected intradermally on the dorsum of the hindpaw. Thirty minutes later, vehicle (white bars) or HMWH (1 μg, black bars) was injected at the same site. Evaluation of the mechanical nociceptive threshold 30 min later showed a significant reversal of the hyperalgesia induced by TNFα and IL-6 in the groups that had been treated with antisense, compared with those treated with sense (TNFα, sense groups: t(10) = 7.306, ****p < 0.0001; antisense groups: t(10) = 1.007, p = 0.1688, nonsignificant; IL-6, sense groups: t(10) = 9.077, ****p < 0.0001; antisense groups: t(10) = 0.8891, p = 0.1974, nonsignificant, when the vehicle and HMWH groups are compared, unpaired Student's t test). B, Rats received four intraperitoneal injections of the chemotherapeutic drug paclitaxel (1 mg/kg, every other day). Intrathecal injections of ODN sense or antisense were performed, once a day, from days 5–7 of paclitaxel treatment. At 24 h after the last injections of paclitaxel and ODNs, vehicle (white bars) or HMWH (1 μg, black bars) was injected intradermally on the dorsum of the hindpaw. Mechanical nociceptive threshold was evaluated before treatment with paclitaxel and 30 min after the injection of vehicle or HMWH. Significant attenuation of paclitaxel-induced hyperalgesia was observed only in the ODN sense-treated group (t(10) = 4.781, ***p = 0.0004, compared with the antisense-treated group, unpaired Student's t test). Together, these results indicate that HMWH acts at CD44 to produce antihyperalgesia. n = 6 paws, all groups.

Article Snippet: The following drugs were used in this study: hyaluronic acid sodium salt from Streptococcus pyrogenes (HMWH), from Calbiochem; epinephrine, prostaglandin E 2 (PGE 2 ), hyaluronic acid sodium salt from Streptococcus equi (LMWH), and the cancer chemotherapeutic agent paclitaxel, from Sigma-Aldrich; a peptide CD44 receptor agonist A6 ( Piotrowicz et al., 2011 ; Finlayson, 2015 ) from GenScript; rat recombinant interleukin-6 (IL-6) and rat recombinant TNFα, from R&D Systems; the selective activator of PKCε, psi ε Receptor for Activated C Kinase (ψεRACK), from Biomatik; and the potent membrane-permeable cAMP analog 8-bromo cAMP sodium salt (Tocris Bioscience).

Techniques: Injection

Journal: Disease Models & Mechanisms

Article Title: Activated pathogenic Th17 lymphocytes induce hypertension following high-fructose intake in Dahl salt-sensitive but not Dahl salt-resistant rats

doi: 10.1242/dmm.044107

Figure Lengend Snippet: Effect of IL-23 injection on the blood pressure of SS and SR rats. Vehicle (PBS containing 0.1% bovine serum albumin) with or without 15 μg/kg recombinant IL-23 was injected into SS and SR rats for 12 days once every 2 or 3 days. (A,B) SBP was measured for 12 days once every 3 days. Injection of IL-23 significantly increased the blood pressure of SS but not SR rats. [Student's t -tests were performed for the analysis of significant differences between the two groups. Data shown are the mean±s.e.m. of six independent experiments (** P <0.01 versus the SS rat control group).] (C) The levels of serum IL-17A, IL-10 and CD25 were detected via ELISA. Injection of 15 μg/kg IL-23 increased the level of IL-17A more in SS than in SR rats. [Student's t -tests were performed for the analysis of significant differences between the two groups. Data shown are the mean±s.e.m. of six independent experiments (* P <0.05 and ** P <0.01 versus the SS control group; ## P <0.01 versus the SR control group).] (D,E) Representatives (processed by FlowJo v10.0) (D) and densitometry (E) of flow cytometry conducted on PBMCs from SS and SR rats after completion of the injection. Injection of IL-23 increased the population of Th17 lymphocytes (CD4 + IL-17A + ) but not Treg lymphocytes (CD4 + FOXP3 + ) in the PBMCs of SS rats. [Student's t -tests were performed for the analysis of significant differences between the two groups. Data shown are the mean±s.e.m. of six independent experiments (* P <0.05 and ** P <0.01 versus the SS control group; # P <0.05 versus the SR control group).]

Article Snippet: To prepare material for IL-23 injection experiments, recombinant rat IL-23 protein (R&D Systems) was dissolved in vehicle (PBS containing 0.1% bovine serum albumin).

Techniques: Injection, Recombinant, Enzyme-linked Immunosorbent Assay, Flow Cytometry

Journal: Disease Models & Mechanisms

Article Title: Activated pathogenic Th17 lymphocytes induce hypertension following high-fructose intake in Dahl salt-sensitive but not Dahl salt-resistant rats

doi: 10.1242/dmm.044107

Figure Lengend Snippet: Summary of the current study. High-fructose intake or injection of IL-23 differentially affected SS rats and SR rats. In SS rats, high-fructose intake or injection of IL-23 induced hypertension by causing the production of a large amount of pro-inflammatory cytokine IL-17A secreted by activated pathogenic Th17 lymphocytes. However, SR rats were protected from hypertension following high-fructose intake or injection of IL-23 by producing a large amount of anti-inflammatory cytokine IL-10, which is secreted by Treg lymphocytes. Therefore, high-fructose intake or injection of IL-23 induces hypertension via the immunologic activation of pathogenic Th17 lymphocytes in SS but not SR rats.

Article Snippet: To prepare material for IL-23 injection experiments, recombinant rat IL-23 protein (R&D Systems) was dissolved in vehicle (PBS containing 0.1% bovine serum albumin).

Techniques: Injection, Activation Assay

Journal: Journal of cellular signaling

Article Title: Chronic IL-1 Exposed AR + PCa Cell Lines Show Conserved Loss of IL-1 Sensitivity and Evolve Both Conserved and Unique Differential Gene Expression Profiles

doi:

Figure Lengend Snippet: Parental MDA-PCa-2b (MDA2b) and chronic IL-1 subline cells (MDA-αs1, MDA-αs2, MDA-βs1, MDA-βs2) were treated acutely for 3 days (A, C) or 6 days (B) with vehicle control (V), 25 ng/ml IL-1α (a), or 25 ng/ml IL-1β (b) and analyzed for cell viability using MTT (A, B) or protein accumulation by western blot (C). Acute IL-1 exposure reduces cell viability and proliferation, reduces full-length PARP (indicative of cell death activation), induces SOD2 and LCN2 protein accumulation (canonical IL-1-induced genes), and reduces AR and NKX3.1 (canonical AR target gene) protein accumulation in MDA-PCa-2b parental cells, but has little to no effect on the chronic IL-1 sublines. Thus, the IL-1 sublines evolved insensitivity to IL-1. Error bars, ± STDEV of 4 biological replicates; p-value, *≤ 0.05, **≤ 0.005, ***≤ 0.005, NS = not significant. Fold MTT optical density (OD) is normalized to treatment control. β-actin is the western blot loading control.

Article Snippet: MDA-PCa-2b cells were maintained in HPC1/20% FB Essence (FBE) containing 0.5 ng/ml IL-1α (Gold Bio, St. Louis, MO; 1110–01A-10) or IL-1β (Gold Bio, St. Louis, MO; 1110–01B-10) for approximately 4 months; and the proliferative colonies that emerged were expanded and termed MDA-PCa-2b IL-1α subline (MDA-αs) and MDA-PCa-2b IL-1β subline (MDA-βs).

Techniques: Western Blot, Activation Assay

Journal: Journal of cellular signaling

Article Title: Chronic IL-1 Exposed AR + PCa Cell Lines Show Conserved Loss of IL-1 Sensitivity and Evolve Both Conserved and Unique Differential Gene Expression Profiles

doi:

Figure Lengend Snippet: (A) MDA-PCA-2b parental (MDA2b) and chronic IL-1 subline (MDA-αs1, MDA-αs2, MDA-βs1, MDA-βs2) cells were treated acutely for 3 days with vehicle control, 25 ng/ml IL-1α, or 25 ng/ml IL-1β and analyzed by RT-qPCR for mRNA levels of the IL-1 receptor, IL-1R1 . Acute IL-1 exposure does not increase IL-1 receptor ( IL-1R1 ) mRNA levels in parental cells, suggesting basal IL-1R1 levels are sufficient to mediate IL-1 signaling. Furthermore, IL-1 does not show a differential effect on IL-1R1 mRNA levels in parental versus subline cells, suggesting subline insensitivity is independent of IL-1R1 levels. (B) Vehicle control treated cells were compared for basal mRNA levels of IL-1R1 and of canonical IL-1-induced genes, LCN2 , NOX1 , and SOD2 . IL-1R1, LCN2 , NOX1 , and SOD2 basal mRNA levels are comparable across the parental and subline cells, suggesting chronic IL-1 exposure does not induce constitutive activation of canonical IL-1 intracellular signaling. These data suggest that MDA-PCa-2b cell lines evolve insensitivity to exogenous chronic IL-1 exposure independent of IL-1R1 levels or constitutive activation of intracellular IL-1 signaling. Error bars, ± STDEV of 3 biological replicates; p-value, *≤ 0.05, **≤ 0.005, ***≤ 0.005, NS = not significant. For IL-1-treated cells, mRNA levels are normalized to vehicle control for each cell line. For basal expression, mRNA levels are normalized to the parental cell line.

Article Snippet: MDA-PCa-2b cells were maintained in HPC1/20% FB Essence (FBE) containing 0.5 ng/ml IL-1α (Gold Bio, St. Louis, MO; 1110–01A-10) or IL-1β (Gold Bio, St. Louis, MO; 1110–01B-10) for approximately 4 months; and the proliferative colonies that emerged were expanded and termed MDA-PCa-2b IL-1α subline (MDA-αs) and MDA-PCa-2b IL-1β subline (MDA-βs).

Techniques: Quantitative RT-PCR, Activation Assay, Expressing

Journal: Journal of cellular signaling

Article Title: Chronic IL-1 Exposed AR + PCa Cell Lines Show Conserved Loss of IL-1 Sensitivity and Evolve Both Conserved and Unique Differential Gene Expression Profiles

doi:

Figure Lengend Snippet: Parental (MDA-PCA-2b (MDA2b), LNCaP) and subline (MDA-αs1, MDA-αs2, MDA-βs1, MDA-βs2, LNas1, LNbs1) cells were treated acutely for 3 days with vehicle control, 25 ng/ml IL-1α, or 25 ng/ml IL-1β and analyzed by RT-qPCR for mRNA levels (A, B, C). Acute IL-1 exposure increases LCN2 , NOX1 , and SOD2 mRNA levels in parental MDA-PCa-2b and LNCaP cells, but acute IL-1 exposure has attenuated or no effect on mRNA levels in the subline cells. Thus, both LNCaP and MDA-PCa-2b cell lines show conserved intracellular response to acute IL-1-induced changes mRNA levels and evolve chronic IL-1 insensitivity independent of constitutive canonical IL-1 intracellular signaling. Error bars, ± STDEV of 3 biological replicates; p-value, *≤ 0.05, **≤ 0.005, ***≤ 0.005, NS = not significant. For IL-1-treated cells, mRNA levels are normalized to vehicle control for each cell line.

Article Snippet: MDA-PCa-2b cells were maintained in HPC1/20% FB Essence (FBE) containing 0.5 ng/ml IL-1α (Gold Bio, St. Louis, MO; 1110–01A-10) or IL-1β (Gold Bio, St. Louis, MO; 1110–01B-10) for approximately 4 months; and the proliferative colonies that emerged were expanded and termed MDA-PCa-2b IL-1α subline (MDA-αs) and MDA-PCa-2b IL-1β subline (MDA-βs).

Techniques: Quantitative RT-PCR