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mLife Journal

@mlifejournal.bsky.social
42 followers 88 following 320 posts

mLife is an open access microbiology journal. It strives to build a high-level academic exchange platform for the global microbiology community.

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mLife Journal @mlifejournal.bsky.social · 9h
on #mLife, scientists found that when the black rot pathogen invades plants, the protein DrdR acts as a "molecular accelerator"—boosting pilus motor power to drive bacteria toward leaf hydathodes. 🔗 doi.org/10.1002/mlf2...
Figure 1 Proposed model depicting the molecular basis of DrdR-mediated enhancement of Xcc swarming. Upon sensing plant-derived environmental signals of unknown identity, Xcc activates DrdR via an as-yet-unidentified cognate histidine kinase. The resulting increase in DrdR abundance potentiates the ATPase activity of the pilus motor proteins, thereby driving T4P-mediated swarming motility. This process ultimately enhances bacterial colonization of leaf hydathodes and contributes to virulence.
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mLife Journal @mlifejournal.bsky.social · 07/09/2026
Does HBV truly disappear after chronic hepatitis B treatment? New #mLife perspective introduces “cure-related occult HBV infection,” highlighting cccDNA persistence, HBV reactivation risk, and the need for long-term monitoring after HBsAg loss. doi.org/10.1002/mlf2...
Figure 1. Distinct immunological and cellular outcomes of three classes of OBI. ① Resolved acute self-limiting infection: Viral clearance occurs without repeated episodes of hepatic inflammation or hepatocyte death. ② Resolved chronic infection without intervention. ③ Functional cure.
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mLife Journal @mlifejournal.bsky.social · 15/09/2026
Cells infected with a cubL1-deficient Coxiella mutant become more susceptible to apoptosis, while CubL1 restores protection in an E3 ligase activity-dependent manner. This study uncovers a new anti-cell-death strategy used by an intracellular bacterial pathogen.
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mLife Journal @mlifejournal.bsky.social · 15/09/2026
CubL1 targets eIF3g, a dual-function host protein involved in translation initiation and apoptosis. By monoubiquitinating eIF3g at Lys78, CubL1 blocks its DNase activity without detectably impairing protein synthesis.
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mLife Journal @mlifejournal.bsky.social · 15/09/2026
Using activity-based screening, the authors identify CubL1 as a Coxiella E3 ubiquitin ligase and show that it is delivered into host cells through the Dot/Icm type IV secretion system.
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mLife Journal @mlifejournal.bsky.social · 15/09/2026
New in #mLife How does Coxiella burnetii keep host cells alive for intracellular replication? Zhang et al. reveal that the Dot/Icm effector CubL1 acts as an E3 ubiquitin ligase to inhibit host cell death by targeting an apoptosis nuclease. 🔗 doi.org/10.1002/mlf2...
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mLife Journal @mlifejournal.bsky.social · 07/09/2026
Long-term follow-up and individualized management remain essential after functional cure, especially during immunosuppressive treatment or in settings where blood safety is a concern. Understanding cure-related OBI will improve HBV control strategies.
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mLife Journal @mlifejournal.bsky.social · 07/09/2026
The perspective proposes that functional cure represents a distinct form of OBI. Although serum HBsAg and HBV DNA become undetectable, residual intrahepatic cccDNA may persist, potentially maintaining a very low risk of HBV reactivation and transmission.
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mLife Journal @mlifejournal.bsky.social · 07/09/2026
Occult HBV infection (OBI) refers to the persistence of replication-competent HBV DNA (cccDNA/rcDNA) despite negative HBsAg. As more patients achieve functional cure, a new cure-related OBI state is emerging and warrants further attention.
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mLife Journal @mlifejournal.bsky.social · 07/09/2026
Does HBV truly disappear after chronic hepatitis B treatment? New #mLife perspective introduces “cure-related occult HBV infection,” highlighting cccDNA persistence, HBV reactivation risk, and the need for long-term monitoring after HBsAg loss. doi.org/10.1002/mlf2...
Figure 1. Distinct immunological and cellular outcomes of three classes of OBI. ① Resolved acute self-limiting infection: Viral clearance occurs without repeated episodes of hepatic inflammation or hepatocyte death. ② Resolved chronic infection without intervention. ③ Functional cure.
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Reposted by mLife Journal
mLife Journal @mlifejournal.bsky.social · 02/09/2026
mLife Volume 5, Issue 4 is now online! Explore new work on HBV cure, EBV models, bacterial effectors, AMR, microbial motility, ecosystem retrogression, iodate reduction, Southern Ocean bacteria, and coastal viromes. doi.org/10.1002/mlf2...
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mLife Journal @mlifejournal.bsky.social · 04/09/2026
Clinical Pseudomonas aeruginosa can carry a fourth T6SS, but is it functional? #mLife from @taogd.bsky.social lab: H4-T6SS becomes an active antibacterial machine when switched on, and TseMt is a pore-forming toxin with a 3.0 Å structure and a dedicated delivery route. #T6SS doi.org/10.1002/mlf2...
Figure 1. Model of H4-T6SS-mediated TseMt delivery and function in the clinical Pseudomonas aeruginosa isolate LYSZa7. The H4 locus is transcriptionally silent under the tested laboratory conditions but can be activated by promoter rewiring. TseMt adopts a soluble compact state, undergoes conformational rearrangement to expose membrane-interacting elements, and forms pores in target membranes. Its activity is neutralized by TsiMt and is proposed to be delivered by a PAAR4-VgrG4b-DUF4123 chaperone pathway.
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mLife Journal @mlifejournal.bsky.social · 04/09/2026
Genetics and structural modeling indicate a dedicated DUF4123 chaperone-VgrG4b-PAAR4 pathway for TseMt delivery. Together, the work provides the first functional validation of P. aeruginosa H4-T6SS and mechanistic analysis of one of its effectors.
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mLife Journal @mlifejournal.bsky.social · 04/09/2026
A 3.0 Å cryo-EM structure shows TseMt in a compact three-domain state, with membrane-interacting elements buried inside the toxin domain. The data support a conformational switch that exposes these elements for membrane insertion and pore formation.
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mLife Journal @mlifejournal.bsky.social · 04/09/2026
Secretome and competition analyses identify TseMt as a major H4-T6SS antibacterial effector. TseMt acts in the periplasm, binds membranes, and forms ion-conducting pores; its cognate immunity protein TsiMt protects target cells.
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mLife Journal @mlifejournal.bsky.social · 04/09/2026
Most P. aeruginosa strains encode three canonical T6SSs (H1-H3). A fourth cluster, H4-T6SS, occurs in some clinical isolates, but whether it is functional was unclear. In LYSZa7, H4 is silent under the tested lab conditions but can assemble and secrete when activated.
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mLife Journal @mlifejournal.bsky.social · 04/09/2026
Clinical Pseudomonas aeruginosa can carry a fourth T6SS, but is it functional? #mLife from @taogd.bsky.social lab: H4-T6SS becomes an active antibacterial machine when switched on, and TseMt is a pore-forming toxin with a 3.0 Å structure and a dedicated delivery route. #T6SS doi.org/10.1002/mlf2...
Figure 1. Model of H4-T6SS-mediated TseMt delivery and function in the clinical Pseudomonas aeruginosa isolate LYSZa7. The H4 locus is transcriptionally silent under the tested laboratory conditions but can be activated by promoter rewiring. TseMt adopts a soluble compact state, undergoes conformational rearrangement to expose membrane-interacting elements, and forms pores in target membranes. Its activity is neutralized by TsiMt and is proposed to be delivered by a PAAR4-VgrG4b-DUF4123 chaperone pathway.
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
11/ Correspondence | WWTPs reshape coastal viromes Zhang et al. show that wastewater discharge can override natural seasonal variability and stably reshape coastal viral communities, hosts and AMG profiles. doi.org/10.1002/mlf2...
doi.org
Wastewater treatment plant as a stable contributor affecting coastal ocean water viral communities
Click on the article title to read more.
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
10/ Correspondence | Southern Ocean bacterial dispersal Lin et al. show that the Antarctic Circumpolar Current acts as a boundary limiting meridional bacterial dispersal around Antarctica. doi.org/10.1002/mlf2...
doi.org
Antarctic Circumpolar Current creates a boundary limiting the meridional dispersal of bacteria in the Southern Ocean
Click on the article title to read more.
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
9/ Original Research | Why Shewanella reduces iodate Wang et al. show that iodate reduction mainly serves as detoxification against oxidative stress, with distinct freshwater and marine adaptation strategies. doi.org/10.1002/mlf2...
doi.org
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
8/ Original Research | Microbial stability in retrogressed ecosystems Ceja-Navarro et al. show that long-term nutrient depletion reorganizes cross-domain soil networks, enhancing stability and nutrient-cycling potential. doi.org/10.1002/mlf2...
doi.org
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
7/ Original Research | DrdR controls swarming in Xanthomonas Ren et al. show that tandem receiver regulator DrdR modulates PilB/PilT ATPase activity, coordinating type IV pilus-driven motility and virulence. doi.org/10.1002/mlf2...
doi.org
Tandem receiver domain response regulator DrdR modulates swarming by controlling PilB/PilT activity in <i>Xanthomonas campestris</i>
Like many other bacterial organisms, Xanthomonas campestris pv. campestris (Xcc) employs two motility appendages, a single polar flagellum and type IV pili, for sensing environmental cues and travers...
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
6/ Original Research | Pasteurella host adhesion Shang et al. reveal that Pasteurella multocida lipoprotein E interacts with host ABCF2 to promote bacterial adhesion and trigger p53-dependent apoptosis. doi.org/10.1002/mlf2...
doi.org
<i>Pasteurella</i> lipoprotein E interacts with host ABCF2 to facilitate adhesion and cell apoptosis
Pasteurella multocida can cause serious diseases in many animal species and humans, yet the mechanisms of its pathogenesis remain to be elucidated. In this study, we found that the lipoprotein E (Plp...
100
mLife Journal @mlifejournal.bsky.social · 03/09/2026
5/ Original Research | Coxiella blocks host cell death Zhang et al. show that Coxiella burnetii effector CubL1 acts as an E3 ubiquitin ligase, monoubiquitinating eIF3g to inhibit its apoptosis-related nuclease activity. doi.org/10.1002/mlf2...
doi.org
<i>Coxiella burnetii</i> inhibits host cell death by ubiquitination‐induced inactivation of an apoptosis nuclease
Coxiella burnetii modulates a variety of host cell processes to create a niche permissive for its intracellular replication using effectors injected by its Dot/Icm type IV secretion system. More than...
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
4/ Original Research : How do bacteria defend themselves against phages? Huang et al. highlights clinical Pseudomonas aeruginosa and its diverse anti-phage defense systems, revealing how pathogen evolution, antimicrobial resistance and phage susceptibility are intertwined. doi.org/10.1002/mlf2...
doi.org
Thirteen‐year genomic analysis (2010–2022) reveals high‐risk ICU <i>Pseudomonas aeruginosa</i> in China
Pseudomonas aeruginosa is a significant opportunistic pathogen, particularly prevalent in intensive care units (ICUs). Through a comprehensive genomic and phenotypic analysis of 518 ICU and healthy i...
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mLife Journal @mlifejournal.bsky.social · 03/09/2026
3/ Review | Experimental models for Epstein–Barr virus (EBV) research Wufuer et al. review 2D cultures, 3D models, organoids and animal systems for studying EBV infection, pathogenesis, vaccines and therapeutics. doi.org/10.1002/mlf2...
doi.org
Advances and challenges in experimental models for Epstein–Barr virus research
Epstein–Barr virus (EBV), the first identified human oncovirus, is a ubiquitous γ-herpesvirus etiologically linked to diverse malignancies, lymphoproliferative disorders, and autoimmune diseases. Exp...
100
mLife Journal @mlifejournal.bsky.social · 03/09/2026
2/ Perspective | Functionally cured chronic hepatitis B Lu et al. discuss functional cure as a cure-related occult HBV infection state, highlighting cccDNA persistence, blood safety, reactivation risk and long-term follow-up. doi.org/10.1002/mlf2...
doi.org
Functionally cured chronic hepatitis B: A cure‐related occult HBV infection state
Occult HBV infection (OBI) is characterized by the presence of replication-competent hepatitis B virus (HBV) DNA (covalently closed circular DNA [cccDNA] and/or relaxed circular DNA [rcDNA]) in the l...
100
mLife Journal @mlifejournal.bsky.social · 03/09/2026
1/ Cover story: H4-T6SS effector TseMt In this issue’s cover story, Wu et al. identify TseMt as a pore-forming antibacterial effector in clinical Pseudomonas aeruginosa, revealing its structure, toxin–immunity pair and delivery pathway. doi.org/10.1002/mlf2...
doi.org
Functional characterization of a pore‐forming effector TseMt from the H4 type VI secretion system of <i>Pseudomonas aeruginosa</i>
Pseudomonas aeruginosa is a major nosocomial pathogen in which the type VI secretion system (T6SS) contributes to interbacterial competition and virulence. While most strains encode three T6SSs, addi...
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mLife Journal @mlifejournal.bsky.social · 02/09/2026
11/ Correspondence | WWTPs reshape coastal viromes Zhang et al. show that wastewater discharge can override natural seasonal variability and stably reshape coastal viral communities, hosts and AMG profiles. doi.org/10.1002/mlf2...
doi.org
Wastewater treatment plant as a stable contributor affecting coastal ocean water viral communities
Click on the article title to read more.
000
mLife Journal @mlifejournal.bsky.social · 02/09/2026
10/ Correspondence | Southern Ocean bacterial dispersal Lin et al. show that the Antarctic Circumpolar Current acts as a boundary limiting meridional bacterial dispersal around Antarctica. doi.org/10.1002/mlf2...
doi.org
Antarctic Circumpolar Current creates a boundary limiting the meridional dispersal of bacteria in the Southern Ocean
Click on the article title to read more.
100
mLife Journal @mlifejournal.bsky.social · 02/09/2026
9/ Original Research | Why Shewanella reduces iodate Wang et al. show that iodate reduction mainly serves as detoxification against oxidative stress, with distinct freshwater and marine adaptation strategies. doi.org/10.1002/mlf2...
doi.org
Elucidating the physiological significance of iodate reduction in <i>Shewanella</i> species
The reduction of iodate by Shewanella species plays a crucial role in iodine biogeochemical cycling. However, the physiological significance of this reduction process remains poorly understood, becau...
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mLife Journal @mlifejournal.bsky.social · 02/09/2026
8/ Original Research | Microbial stability in retrogressed ecosystems Ceja-Navarro et al. show that long-term nutrient depletion reorganizes cross-domain soil networks, enhancing stability and nutrient-cycling potential. doi.org/10.1002/mlf2...
doi.org
Ecosystem retrogression enhances cross‐domain microbial stability and increases the genetic potential for nutrient cycling
Ecosystem retrogression drives nutrient depletion, reduced productivity, and profound reorganization of soil microbial communities. Using amplicon sequencing and genome-resolved metagenomics, we exam...
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mLife Journal @mlifejournal.bsky.social · 02/09/2026
7/ Original Research | DrdR controls swarming in Xanthomonas Ren et al. show that tandem receiver regulator DrdR modulates PilB/PilT ATPase activity, coordinating type IV pilus-driven motility and virulence. doi.org/10.1002/mlf2...
doi.org
Tandem receiver domain response regulator DrdR modulates swarming by controlling PilB/PilT activity in <i>Xanthomonas campestris</i>
Like many other bacterial organisms, Xanthomonas campestris pv. campestris (Xcc) employs two motility appendages, a single polar flagellum and type IV pili, for sensing environmental cues and travers...
100
mLife Journal @mlifejournal.bsky.social · 02/09/2026
6/ Original Research | Pasteurella host adhesion Shang et al. reveal that Pasteurella multocida lipoprotein E interacts with host ABCF2 to promote bacterial adhesion and trigger p53-dependent apoptosis. doi.org/10.1002/mlf2...
doi.org
<i>Pasteurella</i> lipoprotein E interacts with host ABCF2 to facilitate adhesion and cell apoptosis
Pasteurella multocida can cause serious diseases in many animal species and humans, yet the mechanisms of its pathogenesis remain to be elucidated. In this study, we found that the lipoprotein E (Plp...
100
mLife Journal @mlifejournal.bsky.social · 02/09/2026
5/ Original Research | Coxiella blocks host cell death Zhang et al. show that Coxiella burnetii effector CubL1 acts as an E3 ubiquitin ligase, monoubiquitinating eIF3g to inhibit its apoptosis-related nuclease activity. doi.org/10.1002/mlf2...
doi.org
<i>Coxiella burnetii</i> inhibits host cell death by ubiquitination‐induced inactivation of an apoptosis nuclease
Coxiella burnetii modulates a variety of host cell processes to create a niche permissive for its intracellular replication using effectors injected by its Dot/Icm type IV secretion system. More than...
100
mLife Journal @mlifejournal.bsky.social · 02/09/2026
3/ Review | Experimental models for Epstein–Barr virus (EBV) research Wufuer et al. review 2D cultures, 3D models, organoids and animal systems for studying EBV infection, pathogenesis, vaccines and therapeutics. doi.org/10.1002/mlf2...
doi.org
Advances and challenges in experimental models for Epstein–Barr virus research
Epstein–Barr virus (EBV), the first identified human oncovirus, is a ubiquitous γ-herpesvirus etiologically linked to diverse malignancies, lymphoproliferative disorders, and autoimmune diseases. Exp...
010
mLife Journal @mlifejournal.bsky.social · 02/09/2026
2/ Perspective | Functionally cured chronic hepatitis B Lu et al. discuss functional cure as a cure-related occult HBV infection state, highlighting cccDNA persistence, blood safety, reactivation risk and long-term follow-up. doi.org/10.1002/mlf2...
doi.org
Functionally cured chronic hepatitis B: A cure‐related occult HBV infection state
Occult HBV infection (OBI) is characterized by the presence of replication-competent hepatitis B virus (HBV) DNA (covalently closed circular DNA [cccDNA] and/or relaxed circular DNA [rcDNA]) in the l...
100
mLife Journal @mlifejournal.bsky.social · 02/09/2026
mLife Volume 5, Issue 4 is now online! Explore new work on HBV cure, EBV models, bacterial effectors, AMR, microbial motility, ecosystem retrogression, iodate reduction, Southern Ocean bacteria, and coastal viromes. doi.org/10.1002/mlf2...
221
Reposted by mLife Journal
Miaoxiao Wang (Roy) @miaoxiaor.bsky.social · 11/08/2026
Excited to share our new Comment in @natcomms.nature.com: We join the discussion on the terminology of synthetic microbial communities and propose that SynComs should be more rigorously defined rather than simply renamed. www.nature.com/articles/s41...
nature.com
SynComs should be rigorously defined, not renamed - Nature Communications
Koch et al. propose replacing “synthetic microbial communities (SynComs)” with “defined microbial communities”. We argue that this substitution obscures the design-driven logic of SynCom research, and...
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Reposted by mLife Journal
Miaoxiao Wang (Roy) @miaoxiaor.bsky.social · 27/07/2026
Happy to share our latest review on @isme-microbes.bsky.social. We discussed how (intra- or interpopulation) cell-cell distances shape microbial interactions and enable community-level outcomes. Several hypotheses are proposed and we are testing them! doi.org/10.1093/isme...
doi.org
Influence of cell-cell distance on the ecology and evolution of microbial communities
Abstract. Microorganisms assemble into spatially structured communities in which neighboring cells are separated by highly heterogeneous cell-cell distance
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mLife Journal @mlifejournal.bsky.social · 23/07/2026
3/3) Chemical stress also strengthened predominantly positive protist–bacteria associations, suggesting cross-domain interactions that may help stabilize microbial communities. This work positions protists as key determinants of microbiome resilience under pollution stress.
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mLife Journal @mlifejournal.bsky.social · 23/07/2026
2/3) The responses were stressor-specific: ciprofloxacin had limited effects on protist abundance, while Cu²⁺ enriched protists, especially consumer groups. These shifts highlight the overlooked role of microbial eukaryotes in engineered ecosystems.
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mLife Journal @mlifejournal.bsky.social · 23/07/2026
1/3) Using metagenomics, the authors profiled protistan communities in aerobic-activated granular sludge bioreactors exposed to single and combined chemical stressors. Protists remained a stable and functionally important component of the microbiome.
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mLife Journal @mlifejournal.bsky.social · 23/07/2026
New in #mLife How do protists respond to multiple chemical stressors in wastewater microbiomes? Ding et al. show that protists remain highly resilient—and can even thrive—under combined exposure to ciprofloxacin, triclosan, and Cu²⁺. 🔗 doi.org/10.1002/mlf2...
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mLife Journal @mlifejournal.bsky.social · 23/07/2026
3/3) Chemical stress also strengthened predominantly positive protist–bacteria associations, suggesting cross-domain interactions that may help stabilize microbial communities. This work positions protists as key determinants of microbiome resilience under pollution stress.
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mLife Journal @mlifejournal.bsky.social · 23/07/2026
2/3) The responses were stressor-specific: ciprofloxacin had limited effects on protist abundance, while Cu²⁺ enriched protists, especially consumer groups. These shifts highlight the overlooked role of microbial eukaryotes in engineered ecosystems.
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mLife Journal @mlifejournal.bsky.social · 23/07/2026
1/3) Using metagenomics, the authors profiled protistan communities in aerobic-activated granular sludge bioreactors exposed to single and combined chemical stressors. Protists remained a stable and functionally important component of the microbiome.
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Reposted by mLife Journal
mLife Journal @mlifejournal.bsky.social · 20/07/2026
Ancient soils may lose biodiversity, but do they lose function? Using a 400,000-year ecosystem chronosequence, @deuterioh.bsky.social et al. found that microbial communities become more stable and increase genetic potential for N and P cycling despite nutrient depletion. 🔗 doi.org/10.1002/mlf2...
Figure 1. Graphical abstract illustrating how microbial communities adapt to long-term nutrient depletion across the Mendocino Ecological Staircase, a natural laboratory spanning nearly 400,000 years of ecosystem development.
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mLife Journal @mlifejournal.bsky.social · 20/07/2026
Visit Navarro Lab: Hostmicrobiome.info
hostmicrobiome.info
Navarro Lab
Laboratory of microbial trophic interactions and host-microbe associations
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mLife Journal @mlifejournal.bsky.social · 20/07/2026
These findings suggest that ecosystem retrogression is not simply ecological decline. Instead, microbial communities reorganize in ways that maintain ecosystem stability and nutrient cycling over geological timescales.
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