Journal: Journal of Nanobiotechnology

Article Title: Nanozymes subvert pharmacological conventions: insights from counteracting the placental side effects of TiO₂ nanozymes

doi: 10.1186/s12951-026-04132-8

Figure Lengend Snippet: The hypothetical pathway of this study. All the important molecular and pathways were indicated. Briefly, AMPK is a preferential substrate of Compound C than Akt in normal conditions. When TiO₂ NZs were added to cells, they inhibited the expression of AMPK and mTOR proteins, then with extra addition of Compound C or phenformin turned to inhibit the candidate target of Akt, and exerted contrary effects on regulating autophagy

Article Snippet: Compound C (an AMPK inhibitor, HY-13418 A) and phenformin (an AMPK activator, HY-16397) were bought from MedChemExpress (Monmouth Junction, NJ, USA).Bafilomycin A1 (B1793) and chloroquine (C6628) were gained from Sigma-Aldrich (St. Louis, MO, USA).Primary antibodies of AMPK (ab32047), p-AMPK (ab23875), Akt (ab8805),andp-Akt (ab38449)were supplied by Abcam (Cambridge, UK).The secondary antibody produced by CY3-conjugated goat anti-rabbit (ab6939) is a product of Abcam (Cambridge, UK).Primary antibodies against mTOR (2972), p-mTOR (5536), and LC3A/B (4108) were obtained from Cell Signaling Technology (Danvers, MA, USA).And the primary antibody of GAPDH (AF1186),BCA protein assay kit (P0010S), ATP assay kit (S0026), Trizol reagent (R0016), and cDNA synthesis kit (D7168M) were obtained from Beyotime Biotechnology (Shanghai, China).

Techniques: Expressing

Journal: Journal of Nanobiotechnology

Article Title: Nanozymes subvert pharmacological conventions: insights from counteracting the placental side effects of TiO₂ nanozymes

doi: 10.1186/s12951-026-04132-8

Figure Lengend Snippet: Contrasted effects of Compound C and phenformin on TiO₂ NZs–induced fetal growth impairment and placental cell energy/autophagy responses. ( A ) Representative fetal images and corresponding average fetal length and average fetal weight in the control, TiO₂ NZs, TiO₂ NZs + phenformin, and TiO₂ NZs + Compound C groups. ( B ) Immunofluorescence analysis of autophagy levels in HTR cells following exposure to 100 µg/mL TiO₂ NZs or 100 µg/mL bulk-TiO₂. ( C ) Corresponding cellular ATP levels measured after exposure to TiO₂ NZs and bulk-TiO₂. ( D - E ) Immunofluorescence analysis of autophagy levels following exposure to 100 µg/mL TiO₂ NZs or 100 µg/mL b-TiO₂, either alone or in combination with Compound C/phenformin. Cell nuclei were stained blue with DAPI, and autophagosomes were labeled red using CY3-conjugated secondary antibodies.Scale bar = 20 μm. ( F ) Uptake and location of TiO₂ NZs in HTR-8/Svneo (HTR) cells observed by TEM after cells were treated with 100 µg/mL of TiO₂ NZs. The TiO₂ NZs were indicated by red arrows. ( G ) The morphology of mitochondria observed by TEM after cells were exposed to 100 µg/mL of TiO₂ NZs. Normal or swollen mitochondria were indicated by red arrows, respectively. Data are expressed as mean ± SD. A one-way ANOVA was conducted, followed by a post-hoc Tukey’s multiple comparison test for ( A ). One-way ANOVA was used for ( C ). ** P < 0.01, *** P < 0.001 vs. control group; $ P < 0.05 TiO₂ NZs + phenformin vs. TiO₂ NZs group; # P < 0.05 TiO₂ NZs + Compound C vs. TiO₂ NZs group

Article Snippet: Compound C (an AMPK inhibitor, HY-13418 A) and phenformin (an AMPK activator, HY-16397) were bought from MedChemExpress (Monmouth Junction, NJ, USA).Bafilomycin A1 (B1793) and chloroquine (C6628) were gained from Sigma-Aldrich (St. Louis, MO, USA).Primary antibodies of AMPK (ab32047), p-AMPK (ab23875), Akt (ab8805),andp-Akt (ab38449)were supplied by Abcam (Cambridge, UK).The secondary antibody produced by CY3-conjugated goat anti-rabbit (ab6939) is a product of Abcam (Cambridge, UK).Primary antibodies against mTOR (2972), p-mTOR (5536), and LC3A/B (4108) were obtained from Cell Signaling Technology (Danvers, MA, USA).And the primary antibody of GAPDH (AF1186),BCA protein assay kit (P0010S), ATP assay kit (S0026), Trizol reagent (R0016), and cDNA synthesis kit (D7168M) were obtained from Beyotime Biotechnology (Shanghai, China).

Techniques: Control, Immunofluorescence, Staining, Labeling, Comparison

Journal: Journal of Nanobiotechnology

Article Title: Nanozymes subvert pharmacological conventions: insights from counteracting the placental side effects of TiO₂ nanozymes

doi: 10.1186/s12951-026-04132-8

Figure Lengend Snippet: Autophagosome accumulation and its modulation by Compound C and phenformin in placental cells. ( A - C ) Cell autophagy levels were assessed by immunofluorescence and observed using a confocal microscope after cells received corresponding treatments. ( D , E ) Cell autophagy levels were assessed by immunofluorescence after HTR cells were treated with Compound C and phenformin in the absence of TiO₂ NZs. ( F ) Autophagy levels were examined after Compound C was added to the starvation-induced autophagy group. Cell nuclei were stained with DAPI (blue), and autophagosomes were labeled with CY3-conjugated secondary antibodies (red). Scale bar = 100 μm

Article Snippet: Compound C (an AMPK inhibitor, HY-13418 A) and phenformin (an AMPK activator, HY-16397) were bought from MedChemExpress (Monmouth Junction, NJ, USA).Bafilomycin A1 (B1793) and chloroquine (C6628) were gained from Sigma-Aldrich (St. Louis, MO, USA).Primary antibodies of AMPK (ab32047), p-AMPK (ab23875), Akt (ab8805),andp-Akt (ab38449)were supplied by Abcam (Cambridge, UK).The secondary antibody produced by CY3-conjugated goat anti-rabbit (ab6939) is a product of Abcam (Cambridge, UK).Primary antibodies against mTOR (2972), p-mTOR (5536), and LC3A/B (4108) were obtained from Cell Signaling Technology (Danvers, MA, USA).And the primary antibody of GAPDH (AF1186),BCA protein assay kit (P0010S), ATP assay kit (S0026), Trizol reagent (R0016), and cDNA synthesis kit (D7168M) were obtained from Beyotime Biotechnology (Shanghai, China).

Techniques: Immunofluorescence, Microscopy, Staining, Labeling

Journal: Journal of Nanobiotechnology

Article Title: Nanozymes subvert pharmacological conventions: insights from counteracting the placental side effects of TiO₂ nanozymes

doi: 10.1186/s12951-026-04132-8

Figure Lengend Snippet: Compound C and phenformin differentially regulate AMPK/mTOR signaling and exhibit distinct binding modes to AKT1.( A ) Western blot analysis of AMPK, p-AMPK, mTOR, and p-mTOR expression levels in cells treated with 100 µg/mL TiO₂ NZs. ( B ) Western blot analysis of AMPK and p-AMPK expression levels in cells treated with TiO₂ NZs, either alone or in combination with Compound C or phenformin. ( C , D ) Western blot analysis of AMPK and p-AMPK expression levels in cells treated with Compound C ( C ) and phenformin ( D ). GAPDH served as a loading control. Molecular weights (kDa) are indicated beside the bands.Quantitative densitometric analysis corresponding to the western blots in ( A – D ) was performed using ImageJ software. All bands were normalized to GAPDH expression, and the tests were repeated three times. ( E ) Chemical structures of ATP-competitive AKT1 inhibitors. ( F ) Chemical structures of allosteric (auto-inhibitory) AKT1 inhibitors. ( G ) Docking conformation of Compound C at the interface of the AKT1 dimer, with AKT1a and AKT1b colored red and blue, respectively. ( H ) Docking conformation of the AKT inhibitor (4EJN) in AKT1. ( I ) Docking conformation of phenformin within the AKT1 binding site. ( J ) Superimposed binding modes of Compound C and phenformin in the AKT1 dimer. ( K, L ) Molecular docking results showing the overlapping binding region (blue frame) of Compound C and phenformin, with the upper interaction site specific to Compound C. ( M ) Docking scores (kcal/mol) of phenformin and Compound C bound to AKT1, where more negative values indicate stronger binding affinity.The data are presented as mean ± SD. An unpaired two-tailed t -test was used for ( A , C and D ). A one-way ANOVA was conducted, followed by a post-hoc Tukey’s multiple comparison test for (B). ** P < 0.01, *** P < 0.001 vs. control group; ### P < 0.001 vs. TiO₂ NZs group

Article Snippet: Compound C (an AMPK inhibitor, HY-13418 A) and phenformin (an AMPK activator, HY-16397) were bought from MedChemExpress (Monmouth Junction, NJ, USA).Bafilomycin A1 (B1793) and chloroquine (C6628) were gained from Sigma-Aldrich (St. Louis, MO, USA).Primary antibodies of AMPK (ab32047), p-AMPK (ab23875), Akt (ab8805),andp-Akt (ab38449)were supplied by Abcam (Cambridge, UK).The secondary antibody produced by CY3-conjugated goat anti-rabbit (ab6939) is a product of Abcam (Cambridge, UK).Primary antibodies against mTOR (2972), p-mTOR (5536), and LC3A/B (4108) were obtained from Cell Signaling Technology (Danvers, MA, USA).And the primary antibody of GAPDH (AF1186),BCA protein assay kit (P0010S), ATP assay kit (S0026), Trizol reagent (R0016), and cDNA synthesis kit (D7168M) were obtained from Beyotime Biotechnology (Shanghai, China).

Techniques: Binding Assay, Western Blot, Expressing, Control, Software, Two Tailed Test, Comparison

Journal: Journal of Nanobiotechnology

Article Title: Nanozymes subvert pharmacological conventions: insights from counteracting the placental side effects of TiO₂ nanozymes

doi: 10.1186/s12951-026-04132-8

Figure Lengend Snippet: Akt-targeted autophagy modulation emerges as AMPK declines in TiO₂ NZs-treated cells. ( A ) Western blot analysis of Akt and p-Akt protein levels in cells treated with 100 µg/mL TiO₂ NZs for 24 h. ( B, C ) Protein levels of Akt and p-Akt after treatment with Compound C or phenformin. ( D, E )Western blot analysis of Akt, p-Akt, mTOR, and p-mTOR in cells treated with TiO₂ NZs alone or in combination with Compound C or phenformin for 24 h. GAPDH served as a loading control. Molecular weights (kDa) are indicated beside the bands.Quantitative densitometric analysis corresponding to the western blots in ( A – E ) was performed using ImageJ software. All bands were normalized to GAPDH expression, and the tests were repeated three times. ( F ) AMPK mRNA and protein expression levels in cells transfected with AMPK siRNA or negative control. ( G ) Immunofluorescence analysis of autophagy levels in cells transfected with AMPK siRNA alone or in combination with Compound C or phenformin. ( H ) AMPK mRNA and protein expression levels in cells transfected with AMPK overexpression vector (pcDNA3.1-AMPK) or negative control vector (pcDNA3.1). All data are presented as the mean ± SD from three independent experiments. An unpaired two-tailed t-test was used for ( A - C ). A one-way ANOVA was conducted, followed by a post-hoc Tukey’s multiple comparison test for ( D , E , F , H ). * P < 0.05, ** P < 0.01, *** P < 0.001 vs. control group; ## P < 0.01, ### P < 0.001 vs. TiO₂ NZs group

Article Snippet: Compound C (an AMPK inhibitor, HY-13418 A) and phenformin (an AMPK activator, HY-16397) were bought from MedChemExpress (Monmouth Junction, NJ, USA).Bafilomycin A1 (B1793) and chloroquine (C6628) were gained from Sigma-Aldrich (St. Louis, MO, USA).Primary antibodies of AMPK (ab32047), p-AMPK (ab23875), Akt (ab8805),andp-Akt (ab38449)were supplied by Abcam (Cambridge, UK).The secondary antibody produced by CY3-conjugated goat anti-rabbit (ab6939) is a product of Abcam (Cambridge, UK).Primary antibodies against mTOR (2972), p-mTOR (5536), and LC3A/B (4108) were obtained from Cell Signaling Technology (Danvers, MA, USA).And the primary antibody of GAPDH (AF1186),BCA protein assay kit (P0010S), ATP assay kit (S0026), Trizol reagent (R0016), and cDNA synthesis kit (D7168M) were obtained from Beyotime Biotechnology (Shanghai, China).

Techniques: Western Blot, Control, Software, Expressing, Transfection, Negative Control, Immunofluorescence, Over Expression, Plasmid Preparation, Two Tailed Test, Comparison

Journal: Journal of Nanobiotechnology

Article Title: Nanozymes subvert pharmacological conventions: insights from counteracting the placental side effects of TiO₂ nanozymes

doi: 10.1186/s12951-026-04132-8

Figure Lengend Snippet: Autophagy reversal via AMPK overexpression and Akt knockdown highlights dual-target mechanism. ( A , B ) Immunofluorescence analysis of autophagy levels in HTR cells exposed to the following treatments: ( A ) Control cells, TiO₂ NZs, TiO₂ NZs + AMPK overexpression vector (pcDNA3.1-AMPK), TiO₂ NZs + AMPK overexpression vector + Compound C, or TiO₂ NZs + Compound C; ( B ) Control cells, TiO₂ NZs, TiO₂ NZs + AMPK overexpression vector, TiO₂ NZs + AMPK overexpression vector + phenformin, or TiO₂ NZs + phenformin. Cell nuclei were stained blue with DAPI, and autophagosomes were labeled red using CY3-conjugated secondary antibodies. Scale bar = 100 μm. ( C ) AKT mRNA and protein levels examined by RT-PCR and western blotting after cells were transfected with the Akt siRNA and the negative control. ( D ) Immunofluorescence analysis of autophagy levels in HTR cells exposed to the following treatments: TiO₂ NZs, TiO₂ NZs + Akt siRNA, TiO₂ NZs + Akt siRNA + Compound C, TiO₂ NZs + Compound C, TiO₂ NZs + Akt siRNA + phenformin, or TiO₂ NZs + phenformin for 24 h. Cell nuclei were stained blue with DAPI, and autophagosomes were labeled red using CY3-conjugated secondary antibodies. All data are presented as the mean ± SD. A one-way ANOVA was conducted, followed by a post-hoc Tukey’s multiple comparison test for ( C ). **** P < 0.0001 vs. NC siRNA group

Article Snippet: Compound C (an AMPK inhibitor, HY-13418 A) and phenformin (an AMPK activator, HY-16397) were bought from MedChemExpress (Monmouth Junction, NJ, USA).Bafilomycin A1 (B1793) and chloroquine (C6628) were gained from Sigma-Aldrich (St. Louis, MO, USA).Primary antibodies of AMPK (ab32047), p-AMPK (ab23875), Akt (ab8805),andp-Akt (ab38449)were supplied by Abcam (Cambridge, UK).The secondary antibody produced by CY3-conjugated goat anti-rabbit (ab6939) is a product of Abcam (Cambridge, UK).Primary antibodies against mTOR (2972), p-mTOR (5536), and LC3A/B (4108) were obtained from Cell Signaling Technology (Danvers, MA, USA).And the primary antibody of GAPDH (AF1186),BCA protein assay kit (P0010S), ATP assay kit (S0026), Trizol reagent (R0016), and cDNA synthesis kit (D7168M) were obtained from Beyotime Biotechnology (Shanghai, China).

Techniques: Over Expression, Knockdown, Immunofluorescence, Control, Plasmid Preparation, Staining, Labeling, Reverse Transcription Polymerase Chain Reaction, Western Blot, Transfection, Negative Control, Comparison

Journal: Journal of Nanobiotechnology

Article Title: Nanozymes subvert pharmacological conventions: insights from counteracting the placental side effects of TiO₂ nanozymes

doi: 10.1186/s12951-026-04132-8

Figure Lengend Snippet: Phenformin and Compound C rewire AMPK/mTOR pathway in HTR cells post-TiO₂ exposure. ( A, B ) Western blot analysis of Akt, AMPK, mTOR, and their phosphorylated forms after cells were treated with 100 µg/mL TiO₂ NZs, TiO₂ NZs + AMPK overexpression vector (pcDNA3.1-AMPK), or TiO₂ NZs + AMPK overexpression vector + Compound C/phenformin for 24 h. ( C ) Protein levels of AKT, p-AKT, AMPK, p-AMPK, mTOR, p-mTOR, and LC3 in the control group, TiO₂ NZs exposure group, TiO₂ NZs + phenformin and TiO₂ NZs + Compound C groups, as determined by western blotting. GAPDH served as a loading control. Molecular weights (kDa) are indicated beside the bands. Quantitative densitometric analysis corresponding to the western blots in ( A – C ) was performed using ImageJ software. All bands were normalized to GAPDH expression, and the tests were repeated three times.Data were collected from three independent experiments and presented as mean ± SD. An unpaired two-tailed t -test was used for (C left panel). A one-way ANOVA was conducted, followed by a post-hoc Tukey’s multiple comparison test for ( A , B , C right panel). * P < 0.05, ** P < 0.01, *** P < 0.001 vs. control group; # P < 0.05, ## P < 0.01, ### P < 0.001 TiO₂ NZs + AMPK-vector + Compound C vs. TiO₂ NZs group; $ P < 0.05, $$ P < 0.01, $$$ P < 0.001 TiO₂ NZs + AMPK-vector vs. TiO₂ NZs group; † P < 0.05, †† P < 0.01, ††† P < 0.001 TiO₂ NZs + AMPK-vector + Compound C vs. TiO₂ NZs + AMPK-vector group (A-B). * P < 0.05, ** P < 0.01, *** P < 0.001 vs. control group; # P < 0.05, ### P < 0.001 TiO₂ NZs + Compound C vs. TiO₂ NZs group; $ P < 0.05, $$ P < 0.01, $$$ P < 0.001 TiO₂ NZs + phenformin vs. TiO₂ NZs group ( C )

Article Snippet: Compound C (an AMPK inhibitor, HY-13418 A) and phenformin (an AMPK activator, HY-16397) were bought from MedChemExpress (Monmouth Junction, NJ, USA).Bafilomycin A1 (B1793) and chloroquine (C6628) were gained from Sigma-Aldrich (St. Louis, MO, USA).Primary antibodies of AMPK (ab32047), p-AMPK (ab23875), Akt (ab8805),andp-Akt (ab38449)were supplied by Abcam (Cambridge, UK).The secondary antibody produced by CY3-conjugated goat anti-rabbit (ab6939) is a product of Abcam (Cambridge, UK).Primary antibodies against mTOR (2972), p-mTOR (5536), and LC3A/B (4108) were obtained from Cell Signaling Technology (Danvers, MA, USA).And the primary antibody of GAPDH (AF1186),BCA protein assay kit (P0010S), ATP assay kit (S0026), Trizol reagent (R0016), and cDNA synthesis kit (D7168M) were obtained from Beyotime Biotechnology (Shanghai, China).

Techniques: Western Blot, Over Expression, Plasmid Preparation, Control, Software, Expressing, Two Tailed Test, Comparison

Journal: PLoS Pathogens

Article Title: Neutrophil-Derived CCL3 Is Essential for the Rapid Recruitment of Dendritic Cells to the Site of Leishmania major Inoculation in Resistant Mice

doi: 10.1371/journal.ppat.1000755

Figure Lengend Snippet: L. major –i.p. recruited C57BL/6 and BALB/c neutrophils were purified by MACS and incubated with medium, L. major (5∶1 parasite∶neutrophil ratio), IFNγ, or both. (A) Sixteen hours later, neutrophil CCL3, CCL4 and CCL5 mRNA levels were assessed by real-time quantitative RT-PCR, and (B) 24 hours after initiation of culture, chemokine content was measured in cell-free culture supernatants by ELISA. Data are the mean triplicate measurement ± SEM of neutrophil mRNA or chemokine content in the supernatants. *: p<0.05 compared to neutrophils cultured with medium only. (C) Supernatants from inflammatory neutrophils cultured in presence or in absence of L. major were tested for their chemotactic activity towards bone marrow-derived DCs in a transwell cell migration assay. The number of DCs that migrated toward neutrophil supernatant is represented. (D) DC migration was similarly assessed in response to neutrophil supernatants depleted of CCL3. *: p<0.05 as compared to values measured in response to supernatant of neutrophil incubated with medium alone. Data are expressed as mean number ± SEM of DC that migrated towards neutrophil supernatant (n = 3 per group). The results of a representative experiment out of three are shown.

Article Snippet: Female BALB/c and C57BL/6 mice were purchased from Harlan Olac Ltd. (Bicester, UK).

Techniques: Purification, Incubation, Quantitative RT-PCR, Enzyme-linked Immunosorbent Assay, Cell Culture, Activity Assay, Derivative Assay, Cell Migration Assay, Migration

Journal: PLoS Pathogens

Article Title: Neutrophil-Derived CCL3 Is Essential for the Rapid Recruitment of Dendritic Cells to the Site of Leishmania major Inoculation in Resistant Mice

doi: 10.1371/journal.ppat.1000755

Figure Lengend Snippet: (A) The number of neutrophils, Langerhans and dermal DCs, and monocyte-derived DCs emigrating from ear explants was measured at 0, 6, 24 and 48 hours post L. major inoculation *: p<0.05 comparing cell number in C57BL/6 versus BALB/c mice. Values from ear explants of six mice per group are expressed as mean values ± SEM . The data are representative of three separate experiments. (B) Gating strategy by flow cytometry of Langerhans and dermal DCs, and monocyte-derived DCs emigrating from L. major -infected C57BL/6 ear explants. For Langerhans and dermal DCs, MHCII and DEC205 positive cells were analyzed on CD11c + gated cells. For monocyte-derived DCs, four colour FACS analysis was performed, CD11b + and LY6C + cells were analyzed on a CCD11c dim and Ly6G − gated cell population. A representative flow cytometry plot is shown.

Article Snippet: Female BALB/c and C57BL/6 mice were purchased from Harlan Olac Ltd. (Bicester, UK).

Techniques: Derivative Assay, Flow Cytometry, Infection

Journal: PLoS Pathogens

Article Title: Neutrophil-Derived CCL3 Is Essential for the Rapid Recruitment of Dendritic Cells to the Site of Leishmania major Inoculation in Resistant Mice

doi: 10.1371/journal.ppat.1000755

Figure Lengend Snippet: C57BL/6 and BALB/c mice were depleted of neutrophils by an injection i.p. of the NIMP-R14 anti-neutrophil mAb, or injected with a control mAb, 6 hours prior to infection i.d. with L. major stationary promastigotes. The number of (A) Langerhans and dermal DCs and (B) monocyte-derived DCs recruited in the ear dermis at 0h (naïve) or 24h following L. major inoculation was quantified and compared in mice depleted or not of neutrophils. Data are given as mean values ± SEM (n = 6 per group) and are representative of three experiments. * : p<0.05 between mice depleted or not of neutrophils.

Article Snippet: Female BALB/c and C57BL/6 mice were purchased from Harlan Olac Ltd. (Bicester, UK).

Techniques: Injection, Control, Infection, Derivative Assay

Journal: PLoS Pathogens

Article Title: Neutrophil-Derived CCL3 Is Essential for the Rapid Recruitment of Dendritic Cells to the Site of Leishmania major Inoculation in Resistant Mice

doi: 10.1371/journal.ppat.1000755

Figure Lengend Snippet: (A) C57BL/6 and BALB/c mice were infected with L. major in the ear dermis. mRNA expression of CCL3, CCL4 and CCL5 at the site of infection was measured 0, 6, 24 and 48 hours post infection by quantitative Real-time PCR and normalized relative to HPRT mRNA levels. Data are represented as the mean ± SEM mRNA transcript levels of individual infected ear (n = 6 per time point). One representative experiment of three is shown. (B) Twenty four hours post-infection, the ear chemokine mRNA level was compared in C57BL/6 mice that were given either the NIMP-R14 neutrophil depleting mAb or a control mAb 6 hours prior to L. major inoculation in the ear. Results are represented as fold increase in mRNA levels relative to levels measured in uninfected mice given a value of 1, and are representative of two experiments.

Article Snippet: Female BALB/c and C57BL/6 mice were purchased from Harlan Olac Ltd. (Bicester, UK).

Techniques: Infection, Expressing, Real-time Polymerase Chain Reaction, Control

Journal: PLoS Pathogens

Article Title: Neutrophil-Derived CCL3 Is Essential for the Rapid Recruitment of Dendritic Cells to the Site of Leishmania major Inoculation in Resistant Mice

doi: 10.1371/journal.ppat.1000755

Figure Lengend Snippet: (A) C57BL/6 and BALB/c mice were injected i.p. with Evasin-1, a chemokine binding protein that neutralizes CCL3. Twenty four hours post L. major inoculation, the number of neutrophils, Langerhans and dermal DCs, and monocyte-derived DCs, spontaneously emigrating out of ear explants was measured and compared to that obtained from ear explants from mice similarly infected but which were not given Evasin-1. * : p<0.05 between mice treated or not with Evasin-1. (B) 24 hours after infection i.d. with L. major , the number of leukocytes emigrating out of ear skin explants of CCL3 −/− mice was compared to that measured in similarly infected C57BL/6 ear explants. The number of neutrophils, Langerhans and dermal DCs, and monocyte-derived DCs is presented as the mean ± SEM (n = 4 for Evasin-1 treated mice, and n = 6 for CCL3 −/− mice) and are representative of three experiments. *: p<0.05 between CCL3 −/− and C57BL/6 mice.

Article Snippet: Female BALB/c and C57BL/6 mice were purchased from Harlan Olac Ltd. (Bicester, UK).

Techniques: Injection, Binding Assay, Derivative Assay, Infection