Journal: Cell Communication and Signaling : CCS

Article Title: The p53 tumor suppressor modulates the expression of proteins that control natural killer cell activity

doi: 10.1186/s12964-026-02772-9

Figure Lengend Snippet: SLAM family member 7 expression is reduced in p53-deficient cells. A . Western blot analysis of indicated proteins in p53-proficient and p53-deficient A549 cells treated with the specified compounds for 30 hours. B . Relative SLAM family member 7 (SLAMF7) mRNA levels measured by semi-quantitative real-time polymerase chain reaction in p53-proficient and p53-deficient A549 and U-2 OS cells under the same treatment conditions. Statistical significance was calculated using a Student’s t-test (* p < 0.05, ** p < 0.01, *** p < 0.001). C . Protein expression in p53-proficient (+) and p53-deficient (-) U-2 OS. D . Protein expression in p53-proficient (+) and p53-deficient (-) NCI-H460 cells. The SLAMF7 panel is shown with both short and long exposure times to visualize the protein bands in actinomycin D (ActD) and nutlin-3a (Nut3a) (A+N)-treated cells better

Article Snippet: NCI-H460 cells (RRID: CVCL_0459, lung cancer, ATCC) and WM793B cells (RRID: CVCL_8787, melanoma) were cultured in RPMI-1640 supplemented with 2 mM L-glutamine, 4.5 g/L glucose, 1 mM sodium pyruvate, and 10% heat-inactivated FBS.

Techniques: Expressing, Western Blot, Real-time Polymerase Chain Reaction

Journal: Cell Communication and Signaling : CCS

Article Title: The p53 tumor suppressor modulates the expression of proteins that control natural killer cell activity

doi: 10.1186/s12964-026-02772-9

Figure Lengend Snippet: Co-treatment with actinomycin D and nutlin-3a sensitizes cancer cells to killing by NK-92 cells. A . Viability of A549 cells measured by MTS assay. Cells were either mock-treated (Con) or treated with actinomycin D (ActD) and nutlin-3a (Nut3a) combined (A+N) for 48 hours, then trypsinized, counted, and incubated for 24 hours in RPMI1640 medium alone or in co-culture with NK-92 cells at two effector-to-target (E: T) ratios (NK-92: A549 – 1:1 and 5:1) for 24 hours. After co-incubation, the medium was replaced with DMEM, and the A549 cells were allowed to recover for 72 hours before assessing metabolic activity via the MTS assay. Five biological replicates were performed. Viability of mock-control cells and drug-treated cells without NK-92 exposure was set to 100%. Statistical analysis: ordinary one-way ANOVA and multiple comparisons test (** p < 0.01, **** p < 0.0001). B . MTS assay of A549 cells pre-treated for 48 hours with ActD, Nut3a, or A+N, followed by 24 hours of co-incubation with NK-92 cells. Viability was assessed as in A . Four biological replicates were analyzed. Statistical analysis: ordinary one-way ANOVA and multiple comparisons test (* p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001). C . Viability of NCI-H460 cells pre-exposed to A+N or Con for 48 hours, followed by 24 hours of co-incubation with the NK-92 cell line at a 1:1 ratio. Viability was assessed as in A . Statistical significance: unpaired, two-tailed t-test (*** p < 0.001). D . Macroscopic visualization of A549 cells surviving NK-92-mediated killing. Cells were pre-treated for 48 hours with A+N or Con, then seeded on a 6-well plate with or without NK-92 cells at E: T ratios of 1:1 or 5:1 (NK-92:A549). After a 24-hour co-incubation, the RPMI medium for NK-92 cells was replaced with fresh DMEM, and the A549 cells were allowed to recover for 5-7 days. Remaining adherent cells were fixed with methanol and stained with 0.01% crystal violet. Representative results from three biological replicates are shown

Article Snippet: NCI-H460 cells (RRID: CVCL_0459, lung cancer, ATCC) and WM793B cells (RRID: CVCL_8787, melanoma) were cultured in RPMI-1640 supplemented with 2 mM L-glutamine, 4.5 g/L glucose, 1 mM sodium pyruvate, and 10% heat-inactivated FBS.

Techniques: MTS Assay, Incubation, Co-Culture Assay, Activity Assay, Control, Two Tailed Test, Staining

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A) Representative Western blots in which decreased Rnd3 expression is observed in A549 and H460 cells transfected with two separate Rnd3 siRNA oligos A (Rnd3(A)) and D (Rnd3(D)) compared with non-silencing control cells at 24, 48, and 96 h post-transfection. Tubulin was used as a loading control, n = 4 (24 h), n = 5 (48 h), and n = 6 (96 h). (B, C) Percentage of cell viability compared with NSC cells at 24, 48, and 96 h post-transfection in (B) A549 and (C) H460 cells. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. (D) Flow cytometry of propidium iodine incorporation was performed 48 h post-transfection with Rnd3 siRNA oligos A (Rnd3(A)) and D (Rnd3(D)) to deplete Rnd3 expression compared with non-silencing control in A549 cells (n = 5) and H460 cells (n = 3). Cell cycle statistical comparisons were performed for G1 and G2/M comparison using one-way ANOVA with Dunnett’s multiple comparison test. * P < 0.05, ns, not significant.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Western Blot, Expressing, Transfection, Control, Flow Cytometry, Comparison

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A, B) Quantification of representative Western blots with samples used in cell viability and cell cycle assays in , of Rnd3 expression after 24, 48, and 96 h of transient transfection with two separate Rnd3 siRNA oligos A (Rnd3(A)) and D (Rnd3(D)) compared with non-silencing control cells in (A) A549 cells, n = 4, and (B) H460 cells, n = 3. Densitometric analysis was performed for each sample set; the expression level of Rnd3 was normalized to own tubulin loading control, then normalized to the expression level of Rnd3 in the NSC cells. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. * P < 0.05, ** P < 0.01, **** P < 0.0001.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Western Blot, Expressing, Transfection, Control

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A, B, C) Decreased Rnd3 expression is observed in A549 and H460 cells transfected with Rnd3 siRNA oligos A (Rnd3(A)) and D (Rnd3(D)) compared with non-silencing control (NSC) cells. Tubulin was used as a loading control. (A, B, C) Representative Western blots and (B, C) densitometric analysis were performed for each sample set; the expression level of Rnd3 was normalized to own tubulin loading control, then normalized to the expression level of Rnd3 in the NSC cells in (B) A549 and (C) H460 cells, n = 4. (D, E, F) Invasion assay across a transwell membrane coated with Matrigel. (D, E) Percentage of invaded cells compared with NSC cells at (D) 24 h for A549 cells (n = 6) and (E) 48 h for H460 cells (n = 4). Data are presented as an individual mean for each experiment, and normalized to own NSC, with bar representing overall mean ± SEM. (F) Representative images of invading cells at 24 h (A549) and 48 h (H460), 10× magnification; scale bar = 100 μm. (G, H, I, J, K) Wound healing assays. (G, H) Time course, percentage wound closure at each time-point compared with wound at 0 h, for (G) A549 cells and (H) H460 cells; data are presented as mean ± SEM. (I, J) Percentage wound closure at (I) 24 h (A549 cells, n = 6) and (J) 48 h (H460 cells, n = 6) compared with wound at 0 h. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. (K) Representative images of wound closure at 0 h and either 24 h for A549 or 48 h for H460 cells, 10× magnification; scale bar = 100 μm. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. * P < 0.05, ** P < 0.01, *** P < 0.001, **** P < 0.0001.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Expressing, Transfection, Control, Western Blot, Invasion Assay, Membrane

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A, B, C, D) 24-h treatment with 5 μM Y-27632 (+Y) induces the loss of actin stress fibers compared with DMSO control (−Y) in (A, C) A549 and (B, D) H460 cells. (A, B) Representative epifluorescence images of the actin stain phalloidin (white). White arrows highlight actin stress fibers, 60× magnification; scale bar = 50 μm. (C, D) Quantification of actin stress fibers; five fields of view were imaged using a 60× oil objective, a total number of actin stress fibers per cell in five cells per field of view were counted, and the average actin stress fiber number per cell was calculated and normalized to own DMSO-treated NSC for each condition per biological repeat, n = 3. (E, F, G, H) Invasion assay across a transwell membrane coated with Matrigel, treated with 5 μM Y-27632 (+Y) or DMSO as a control (−Y). (E, F) Percentage of invaded cells compared with DMSO-treated NSC (−Y) cells at (E) 24 h for A549 and (F) 48 h for H460 cells, n = >4; data are presented as mean ± SEM. (G, H) Representative images of invading cells at (G) 24 h for A549 and (H) 48 h for H460 cells, 10× magnification; scale bar = 100 μm. (I, J) Wound healing assay, treated with 5 μM Y-27632 (+Y) or DMSO control (−Y). (I) Time course, percentage wound closure for A549 cells at each time-point compared with wound at 0 h, and data are presented as mean ± SEM. (J) Percentage wound closure for A549 cells at 24 h compared with wound at 0 h, n = 4. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM; statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. * P < 0.05, ** P < 0.01, *** P < 0.001, **** P < 0.0001, ns, not significant. (K) Representative Western blots of samples used in above experiment, in which decreased Rnd3 expression is observed in A549 and H460 cells transfected with siRNA oligos A (Rnd3(A)) and D (Rnd3(D)), treated with 5 μM Y-27632 (+Y) or DMSO (−Y). Tubulin was used as a loading control.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Control, Staining, Invasion Assay, Membrane, Wound Healing Assay, Western Blot, Expressing, Transfection

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A, B) Quantification of representative Western blots of samples used in cell migration and invasion assays treated with either 5 μM Y-27632 (+Y) or DMSO control (−Y) in , (A) A549 cells, n = 4, and (B) H460 cells, n = 3. Densitometric analysis was performed for each sample set; the expression level of Rnd3 was normalized to own tubulin loading control, then normalized to the expression level of Rnd3 in the NSC cells. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. (C, D, E, F) 24-h treatment with either 5 or 10 μM Y-27632 (Y) induces the loss of actin stress fibers compared with their corresponding DMSO control in (C, E) A549 cells, n = 4, and (D, F) H460 cells, n = 3. (C, D) Epifluorescence images of actin stain phalloidin (white). White arrows highlight actin stress fibers; scale bar = 50 μm. (E, F) Quantification of actin stress fibers; five fields of view were imaged using a 60x oil objective, the total number of actin stress fibers per cell in five cells per field of view was counted, and average actin stress fiber number per cell was calculated and normalized to own DMSO-treated cells for each condition per biological repeat. (G, H) Invasion assay across a transwell membrane coated with Matrigel, treated with 5 or 10 μM Y-27632 (Y) or corresponding DMSO control. (F, G) Percentage of invaded cells compared with DMSO-treated cells at (G) 24 h for A549 and (F) 48 h for H460 cells, n = >4. Data are presented as an individual mean for each experiment, and normalized to own DMSO-treated cells, with bar representing overall mean ± SEM. * P < 0.05, ** P < 0.01, **** P < 0.0001, ns, not significant.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Western Blot, Migration, Control, Expressing, Staining, Invasion Assay, Membrane

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A) Representative Western blots comparing expression and phosphorylation levels of ROCK1 downstream targets: pMLC2, total MLC2, pCofilin, and total Cofilin, in A549 and H460 cells transfected for 48 h with Rnd3 siRNA oligos A (Rnd3(A)) and D (Rnd3(D)) compared with non-silencing control cells. Tubulin was used as a loading control. (B, C, D, E, F, G, H, I) Quantification of representative Western blots; densitometric analysis was performed for each sample set over multiple biological replicates to include quantification of Rnd3 and pCofilin expression levels of (B, C) A549, n = 4, and (D, E) H460 cells, n = 5, and Rnd3 and pMLC2 expression levels of (F, G) A549 cells, n = 6, and (H, I) H460 cells, n = 4, compared with NSC cells. (B, D, F, H) Quantification of Rnd3 siRNA knockdown for each sample set; expression levels of Rnd3 were normalized to own tubulin loading control, then normalized to the expression level of Rnd3 in the NSC cells. (C, E) Expression levels of pCofilin were normalized to own tubulin loading control, then normalized to the expression level of pCofilin in the NSC cells. (G, I) Expression levels of pMLC2 were normalized to own tubulin loading control, then normalized to the expression level of pMLC2 in the NSC cells. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. *** P < 0.001, **** P < 0.0001, ns, not significant.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Western Blot, Expressing, Phospho-proteomics, Transfection, Control, Knockdown

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A, B, C) Representative Western blots in which decreased protein expression levels of Rnd3 (oligo A), ROCK1, and ROCK2 are observed, corresponding to siRNA treatment compared with non-silencing control (NSC) in (A) A549, (B) H460, and (C) A375 cells (as an experimental control). Tubulin was used as a loading control. (D, E, F) Invasion assay across a transwell membrane coated with Matrigel, percentage of invaded cells compared with NSC cells at (D) 24 h for A549, n = >4, (E) 48 h for H460, n = 6, and (F) 16 h for A375 cells, n = 3 (as an experimental control). (G, H) A549 wound healing assay. (G) Time course, percentage wound closure at each time-point compared with wound at 0 h, and data are presented as mean ± SEM. (H) Percentage wound closure at 24 h compared with wound at 0 h, n = 5. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. * P < 0.05, ** P < 0.01, *** P < 0.001, **** P < 0.0001, ns, not significant.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Western Blot, Expressing, Control, Invasion Assay, Membrane, Wound Healing Assay

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A, B, C, D, E, F, G, H, I) Quantification of representative Western blots with samples used in cell migration and cell invasion assays in . Densitometric analysis was performed for each sample set over multiple biological replicates for Rnd3 (A, D, G), ROCK1 (B, E, H), and ROCK2 (C, F, I) expression after transient transfection with siRNA oligo compared with expression levels in non-silencing control cells in (A, B, C) A549, n = 5, (D, E, F) H460, n = 4, and (G, H, I) A375 cells, n = 3. Expression levels of each protein of interest were normalized to own tubulin loading control, then normalized to the expression level of the protein of interest in the NSC cells. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. ** P < 0.01, *** P < 0.001, **** P < 0.0001.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Western Blot, Migration, Expressing, Transfection, Control

Journal: Life Science Alliance

Article Title: Rnd3 regulates lung cancer cell invasion and migration independently of ROCK1 signaling via alpha 5 integrin modulation

doi: 10.26508/lsa.202503494

Figure Lengend Snippet: (A) Wound healing assay using A549 cells, and percentage wound closure at 24 h compared with wound at 0 h. (B) Invasion assay across a transwell membrane coated with Matrigel, and percentage of invaded cells compared with NSC H460 cells at 48 h. (C) Representative Western blots in which decreased protein expression levels of Rnd3 (oligo A) and RhoA (oligos 1 & 2) are observed, corresponding to siRNA treatment compared with non-silencing control, A549, and H460 cells. Tubulin was used as a loading control. (D, E, F, G) Quantification of representative Western blots. Densitometric analysis was performed for each sample set over multiple biological replicates for Rnd3 (D, F) and RhoA (E, G) expression after transient transfection with siRNA oligo compared with expression levels in NSC cells in (D, E) A549 and (F, G) H460 cells, n = 4. Expression levels of each protein of interest were normalized to own tubulin loading control, then normalized to the expression level of that protein of interest in the NSC cells. Data are presented as an individual mean for each experiment with bar representing overall mean ± SEM. Statistical comparisons were performed using one-way ANOVA with Dunnett’s multiple test correction. * P < 0.05, ** P < 0.01, *** P < 0.001, **** P < 0.0001.

Article Snippet: Authenticated A549 (CCL185) and H460 (HTB-177) lung adenocarcinoma cells and A375 (CRL1619) melanoma cells were obtained from the ATCC.

Techniques: Wound Healing Assay, Invasion Assay, Membrane, Western Blot, Expressing, Control, Transfection