Journal: Frontiers in Cellular and Infection Microbiology

Article Title: KpFhaB/FhaC is a virulence-associated TPS system of the globally-disseminated Klebsiella pneumoniae ST15 high-risk clone

doi: 10.3389/fcimb.2026.1787622

Figure Lengend Snippet: Quantification of the adherence of K. pneumoniae strains to HT-29 intestinal colorectal cells. Bacterial adherence is reported as the percentage of attached bacteria relative to the initial inoculum (100%). Kp3380 is the wild-type strain, while its isogenic derivatives include mutants Kp3380Δ fhaC , Kp3380Δ kpiD , the double mutant Kp3380Δ kpiD Δ fhaC , and complemented strains Kp3380Δ fhaC_C and Kp3380Δ kpiD_C . Each symbol represents an individual biological replicate; the wild-type and single mutants were tested in 7 independent replicates (n=7), whereas the double mutant and complemented strains were tested in 6 replicates (n=6). Horizontal lines indicate the mean value for each group and error bars represent the standard deviation (SD). Statistical significance was determined by one-way ANOVA followed by a post hoc Tukey’s multiple comparisons test to identify differences between each derivative and the wild-type control. Significance levels are indicated as follows: non-significant (ns), *** P ≤ 0.001, and **** P≤ 0.0001.

Article Snippet: Human colorectal epithelial HT-29 cells (ATCC ® HTB-38TM) were cultured in McCoy’s 5A medium (Gibco) with 10% FBS, 1% penicillin/streptomycin, and 1% GlutaMAX at 37 °C, 5% CO 2 .

Techniques: Bacteria, Mutagenesis, Standard Deviation, Control

Journal: Human Mutation

Article Title: PLSCR3 Deficiency Triggers mtDNA‐Driven cGAS‐STING Activation to Potentiate Antitumor Immunity in Colorectal Cancer

doi: 10.1155/humu/8545428

Figure Lengend Snippet: PLSCR3 deficiency disrupts mitochondrial homeostasis in CRC cells. (A) Western blotting verified the reduction of PLSCR3 protein levels in HT29 cells. (B) RT‐qPCR analysis verified reduction of PLSCR3 mRNA levels normalized to GAPDH compared with negative control (NC) cells ( p < 0.0001, n = 3). (C) Representative JC‐1 staining (scale bar: 20 μ m) images showing red fluorescence (polarized mitochondria) and green fluorescence (depolarized mitochondria). (D) Quantification of the JC‐1 red/green fluorescence intensity ratio. Fluorescence intensity was quantified using ImageJ software as described in the section. (E) Real‐time oxygen consumption rate (OCR) profiles under sequential treatment with oligomycin, FCCP, and rotenone/Antimycin A. (F) Quantification of cytosolic mtDNA by qPCR using the D‐loop ratio in PLSCR3‐knockdown and control cells. Data are presented as mean ± SD from three independent experiments. Statistical significance was determined using an unpaired two‐tailed Student′s t ‐test for two‐group comparisons.

Article Snippet: The human colon carcinoma cell line HT29 (Cat. No. ATCC‐HTB‐38) and the mouse colon carcinoma cell line CT26.WT (Cat. No. CRL‐2638, ATCC, Virginia, United States) were maintained in RPMI 1640 medium (Cat. No. BC‐M‐017, Bio‐Channel, Jiangsu, China) supplemented with 10% fetal bovine serum.

Techniques: Western Blot, Quantitative RT-PCR, Negative Control, Staining, Fluorescence, Software, Knockdown, Control, Two Tailed Test

Journal: Human Mutation

Article Title: PLSCR3 Deficiency Triggers mtDNA‐Driven cGAS‐STING Activation to Potentiate Antitumor Immunity in Colorectal Cancer

doi: 10.1155/humu/8545428

Figure Lengend Snippet: PLSCR3 deficiency activates mtDNA‐associated cGAS‐STING signaling. (A) 2 ′ ‐3 ′ ‐cGAMP quantification by ELISA in PLSCR3 knockdown (KD_PLSCR3) HT29 cells and normal controls (NCs) treated with Scramble or dideoxycytidine (DDC) ( p < 0.0001; ns = not significant; n = 3). (B, C) KD_PLSCR3 cells exhibited an elevation in IFN β and CXCL10 production measured by ELISA compared to NC ( p < 0.0001, n = 3). CRISPR‐mediated STING knockout (STING sg) completely abrogated these effects. (D) Western blot analysis showed upregulation of phosphorylated STING and innate immune effectors (IFIH1, ISG60, and ISG15 protein) in STING‐competent KD_PLSCR3 cells relative to GAPDH loading controls. (E) Normalized mRNA level quantification by qPCR demonstrated significant induction of interferon‐stimulated genes (ISGs) in STING‐competent KD_PLSCR3 cells compared with the other groups. Data in panels A–C and E are presented as mean ± SD. Statistical significance was determined using one‐way ANOVA followed by Tukey′s multiple‐comparisons post hoc test for multiple‐group comparisons.

Article Snippet: The human colon carcinoma cell line HT29 (Cat. No. ATCC‐HTB‐38) and the mouse colon carcinoma cell line CT26.WT (Cat. No. CRL‐2638, ATCC, Virginia, United States) were maintained in RPMI 1640 medium (Cat. No. BC‐M‐017, Bio‐Channel, Jiangsu, China) supplemented with 10% fetal bovine serum.

Techniques: Enzyme-linked Immunosorbent Assay, Knockdown, CRISPR, Knock-Out, Western Blot

Journal: Human Mutation

Article Title: PLSCR3 Deficiency Triggers mtDNA‐Driven cGAS‐STING Activation to Potentiate Antitumor Immunity in Colorectal Cancer

doi: 10.1155/humu/8545428

Figure Lengend Snippet: PLSCR3 deficiency enhances the sensitivity to immune cell–mediated killing in CRC. (A) Schematic of coculture system: PLSCR3 knockdown (KD_PLSCR3) HT29 cells or control were cocultured with human cord blood–derived NK cells at an E:T ratio of 5:1. (B, C) Phase‐contrast microscopy (scale bar: 50 μ m) showing morphological changes. Morphological analysis demonstrated decreased cell number in KD_PLSCR3 cells in the coculture condition ( p < 0.0001, n = 5). (D) Mouse graft carcinoma with control or PLSCR3 knockout (PLSCR3 sg) CT26 cells were treated with or without anti‐PD‐1 antibodies ( α PD‐1). Tumor growth curves (mm 3 ) were recorded at Days 5, 10, 15, and 20 after tumor cell inoculation in immunocompetent BALB/c mice. (E) At Day 20, terminal tumor weights in the mouse graft carcinoma were measured. (F–H) Flow cytometry analysis of CD4+ and CD8+ tumor‐infiltrating T cells. The representative cell populations of CD4+ and CD8+ are shown. (I, J) Flow cytometry and ELISA analysis of Granzyme B (GZMB) expression ( n = 5). Data are presented as mean ± SD. Tumor growth curves were analyzed using two‐way repeated‐measures ANOVA with post hoc multiple‐comparison tests. For multiple‐group comparisons, including panels I and J, one‐way ANOVA followed by Tukey′s post hoc test was used.

Article Snippet: The human colon carcinoma cell line HT29 (Cat. No. ATCC‐HTB‐38) and the mouse colon carcinoma cell line CT26.WT (Cat. No. CRL‐2638, ATCC, Virginia, United States) were maintained in RPMI 1640 medium (Cat. No. BC‐M‐017, Bio‐Channel, Jiangsu, China) supplemented with 10% fetal bovine serum.

Techniques: Knockdown, Control, Derivative Assay, Microscopy, Knock-Out, Flow Cytometry, Enzyme-linked Immunosorbent Assay, Expressing, Comparison