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    <description>Lab news from the Plum Lab</description>
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      <title>DOCK8 in T cells promotes Th17 and Treg cell functionality to restrain mucosal mast cells and limit susceptibility to oral anaphylaxis</title>
      <link>https://plum.science/news/2025-07-11-.html</link>
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      <pubDate>Wed, 20 May 2026 13:53:05 +0000</pubDate>
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      <content:encoded><![CDATA[<aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Janssen et al. shows that T cell-intrinsic DOCK8 expression is required to restrain mucosal mast cell expansion and prevent susceptibility to oral anaphylaxis. Mechanistically, DOCK8 deficiency causes a loss of intestinal Th17 cells, leading to microbial dysbiosis and elevated IL-25 production, which drives IL-4 secretion by Th2 cells to expand mucosal mast cells and increase intestinal permeability. This pathogenic cascade is left unrestrained because DOCK8-deficient regulatory T cells concurrently fail to suppress the intestinal IL-4 production and mast cell expansion.</aside>]]></content:encoded>
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      <title>Interleukin-4-producing type 2 innate lymphoid cells in the lymph node promote proallergic Tfh13 cell differentiation</title>
      <link>https://plum.science/news/2026-05-19-online-now-interleukin-4-producing-type-2-innate-lympho.html</link>
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      <pubDate>Wed, 20 May 2026 13:51:56 +0000</pubDate>
      <description>Online now:  Interleukin-4-producing type 2 innate lymphoid cells in the lymph node promote proallergic Tfh13 cell differentiation</description>
      <content:encoded><![CDATA[<p>Online now:  Interleukin-4-producing type 2 innate lymphoid cells in the lymph node promote proallergic Tfh13 cell differentiation</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Lee et al. demonstrates that lymph node-resident ILC2s selectively drive the differentiation of proallergic Tfh13 cells, which are required for high-affinity anaphylactic IgE responses. Mechanistically, ILC2s traffic into draining lymph nodes in a CCR8-dependent manner and produce IL-4, providing a specialized molecular signal necessary for the induction of pathogenic Tfh13 cells but dispensable for conventional Tfh2 cells.</aside>]]></content:encoded>
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      <title>Vip+ vagal neurons control allergen-induced responses</title>
      <link>https://plum.science/news/2026-05-13-vip-vagal-neurons-control-allergen-induced-responses.html</link>
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      <pubDate>Wed, 20 May 2026 13:51:04 +0000</pubDate>
      <description>Vip+ vagal neurons control allergen-induced responses</description>
      <content:encoded><![CDATA[<p>Vip+ vagal neurons control allergen-induced responses</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Zhu et al. identifies Vip+ vagal sensory neurons as a distinct subset necessary and sufficient for allergen-induced airway hyperreactivity and type 2 cytokine expression in the lung. Mechanistically, these neurons relay peripheral lung allergen signals to the nucleus of the solitary tract (nTS) in the brainstem and drive asthmatic pathology via NGFR signaling, defining a specific body-brain neuroimmune axis in asthma.</aside>]]></content:encoded>
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      <title>The Neuroimmune Circuitry of Peripheral Sensory Neuron Subtypes in Chronic Pain</title>
      <link>https://plum.science/news/2026-05-06-review-annualreviewsbskysocial-the-neuroimmune-circuitr.html</link>
      <guid isPermaLink="true">https://plum.science/news/2026-05-06-review-annualreviewsbskysocial-the-neuroimmune-circuitr.html</guid>
      <pubDate>Wed, 20 May 2026 13:50:26 +0000</pubDate>
      <description>Review @annualreviews.bsky.social The Neuroimmune Circuitry of Peripheral Sensory Neuron Subtypes in Chronic Painwww.annualreviews.org/content/jour...</description>
      <content:encoded><![CDATA[<p>Review @annualreviews.bsky.social <br>The Neuroimmune Circuitry of Peripheral Sensory Neuron Subtypes in Chronic Pain<br>www.annualreviews.org/content/jour...</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This review by Yong and Renthal highlights how distinct peripheral sensory neuron subtypes, identified via single-cell transcriptomics, form context-specific neuroimmune circuits to coordinate tissue repair and immune responses. They detail how the dysregulation of these subtype-specific interactions contributes to neuroinflammatory diseases, including atopic dermatitis, headache, and neuropathic pain, presenting these circuits as precise therapeutic targets.</aside>]]></content:encoded>
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      <title>Tuft cells promote reactivation of memory Th2 cells and are required for protective immunity to intestinal helminth re-infection</title>
      <link>https://plum.science/news/2026-03-27-online-now-tuft-cells-promote-reactivation-of-memory-th.html</link>
      <guid isPermaLink="true">https://plum.science/news/2026-03-27-online-now-tuft-cells-promote-reactivation-of-memory-th.html</guid>
      <pubDate>Wed, 20 May 2026 13:48:29 +0000</pubDate>
      <description>Online now:  Tuft cells promote reactivation of memory Th2 cells and are required for protective immunity to intestinal helminth re-infection</description>
      <content:encoded><![CDATA[<p>Online now:  Tuft cells promote reactivation of memory Th2 cells and are required for protective immunity to intestinal helminth re-infection</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Stanbery et al. demonstrates that intestinal tuft cells are essential for protective immunity against secondary Heligmosomoides polygyrus bakeri infection by releasing IL-25 and LTC4 to reactivate memory Th2 cells. These tissue-specific cues drive Th2 cell production of IL-13, which acts in tandem with granuloma formation to mediate effective worm expulsion from the intestinal lumen.</aside>]]></content:encoded>
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      <title>Early life allergen sensitivity starts in the skin</title>
      <link>https://plum.science/news/2026-03-10-early-life-allergen-sensitivity-starts-in-the-skin.html</link>
      <guid isPermaLink="true">https://plum.science/news/2026-03-10-early-life-allergen-sensitivity-starts-in-the-skin.html</guid>
      <pubDate>Wed, 20 May 2026 13:47:45 +0000</pubDate>
      <description>Early life allergen sensitivity starts in the skin</description>
      <content:encoded><![CDATA[<p>Early life allergen sensitivity starts in the skin</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This research highlight by Bird summarizes a study by Xing et al. showing that a post-natal window of hypothalamic-pituitary-adrenal axis immaturity results in low glucocorticoid levels, allowing dermal cDC2s to act as &#34;peripheral immune inducers&#34; that directly trigger acute type 17 skin inflammation in response to allergens. This localized dermal inflammation drives helper T 2 cell sensitization in draining lymph nodes, establishing enhanced susceptibility to subsequent systemic and respiratory allergic challenges.</aside>]]></content:encoded>
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      <title>Interaction between airway basal cells, mast cells and type 2 immunity contributes to epithelial barrier dysfunction in allergic rhinitis</title>
      <link>https://plum.science/news/2026-03-09-interaction-between-airway-basal-cells-mast-cells-and-t.html</link>
      <guid isPermaLink="true">https://plum.science/news/2026-03-09-interaction-between-airway-basal-cells-mast-cells-and-t.html</guid>
      <pubDate>Wed, 20 May 2026 13:46:47 +0000</pubDate>
      <description>Interaction between airway basal cells, mast cells and type 2 immunity contributes to epithelial barrier dysfunction in allergic rhinitis: www.mucosalimmunology.org/article/S193...</description>
      <content:encoded><![CDATA[<p>Interaction between airway basal cells, mast cells and type 2 immunity contributes to epithelial barrier dysfunction in allergic rhinitis: www.mucosalimmunology.org/article/S193...</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Ruysseveldt et al. establishes a bidirectional proinflammatory axis between nasal basal cells and mast cells that drives epithelial barrier dysfunction in allergic rhinitis. They demonstrate that Der p1 acts via PAR2 to trigger basal cell release of cytokines and chemokines, including SCF, which recruits mast cells to the epithelium. In turn, mast cell-derived histamine and tryptase stimulate further basal cell chemokine release, while histamine combined with IL-4 and IL-13 directly impairs basal cell proliferation, mobility, differentiation, and barrier formation.</aside>]]></content:encoded>
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      <title>The most influential explanation of a recent surge in allergies is the hygiene hypothesis</title>
      <link>https://plum.science/news/2026-03-01-the-most-influential-explanation-of-a-recent-surge-in-a.html</link>
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      <pubDate>Wed, 20 May 2026 13:44:44 +0000</pubDate>
      <description>The most influential explanation of a recent surge in allergies is the hygiene hypothesis
go.nature.com/40woBkB</description>
      <content:encoded><![CDATA[<p>The most influential explanation of a recent surge in allergies is the hygiene hypothesis</p>
<p>go.nature.com/40woBkB</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This commentary by Chatila highlights a study by Erickson et al. demonstrating that exposure to microbe-rich environments (such as pet-shop housing) drives environmental immune imprinting that closes the early-life window of allergy susceptibility. This protection is mediated by two distinct pathways: a history of pathogen exposure that primes a broad, highly cross-reactive IgG-mediated type 1 immunity capable of intercepting unfamiliar allergens, and a non-inflammatory oral tolerance pathway where dietary exposures generate cross-protective, regulatory T cell-mediated resistance to antigenically related foods.</aside>]]></content:encoded>
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      <title>Sensory neuron production of substance P and TAFA4 promotes disease tolerance during viral infection</title>
      <link>https://plum.science/news/2026-02-25-online-now-sensory-neuron-production-of-substance-p-and.html</link>
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      <pubDate>Wed, 20 May 2026 13:43:41 +0000</pubDate>
      <description>Online now:  Sensory neuron production of substance P and TAFA4 promotes disease tolerance during viral infection</description>
      <content:encoded><![CDATA[<p>Online now:  Sensory neuron production of substance P and TAFA4 promotes disease tolerance during viral infection</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Roger et al. demonstrates that herpes simplex virus type 1 directly activates sensory neurons to release substance P and TAFA4, which independently promote disease tolerance by limiting immunopathology without altering viral clearance. In the skin, TRPV1+ neuron-derived substance P restricts neutrophil infiltration via MRGPRA1 to accelerate healing, while in the dorsal root ganglia, a TAFA4-IL10 axis acts post-viral clearance to resolve inflammation.</aside>]]></content:encoded>
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      <title>Hyperactivation of sympathetic nerves fuels basophil infiltration in atopic dermatitis</title>
      <link>https://plum.science/news/2026-02-20-online-now-hyperactivation-of-sympathetic-nerves-fuels-.html</link>
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      <pubDate>Wed, 20 May 2026 13:42:41 +0000</pubDate>
      <description>Online now:  Hyperactivation of sympathetic nerves fuels basophil infiltration in atopic dermatitis</description>
      <content:encoded><![CDATA[<p>Online now:  Hyperactivation of sympathetic nerves fuels basophil infiltration in atopic dermatitis</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Xie et al. identifies a sympathetic nervous system-basophil axis where atopic dermatitis-induced anxiety hyperactivates skin sympathetic neurons, releasing norepinephrine to stimulate beta2-adrenergic receptors on basophils. This signaling enhances basophil motility and activates the CCL6-CCR1 chemokine pathway (CCL23-CCR1 in humans), fueling basophil infiltration and amplifying chronic skin inflammation.</aside>]]></content:encoded>
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      <title>Nature research paper: Environmentally driven immune imprinting protects</title>
      <link>https://plum.science/news/2026-02-04-nature-research-paper-environmentally-driven-immune-imp.html</link>
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      <pubDate>Wed, 20 May 2026 13:41:47 +0000</pubDate>
      <description>Nature research paper: Environmentally driven immune imprinting protects against allergy
go.nature.com/46lGExb</description>
      <content:encoded><![CDATA[<p>Nature research paper: Environmentally driven immune imprinting protects against allergy</p>
<p>go.nature.com/46lGExb</p>]]></content:encoded>
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      <title>Neuro-epithelial circuits promote sensory convergence and intestinal immunity</title>
      <link>https://plum.science/news/2026-01-07-nature-research-paper-neuro-epithelial-circuits-promote.html</link>
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      <pubDate>Wed, 20 May 2026 13:40:03 +0000</pubDate>
      <description>Nature research paper: Neuro-epithelial circuits promote sensory convergence and intestinal immunity
go.nature.com/4qeRjlt</description>
      <content:encoded><![CDATA[<p>Nature research paper: Neuro-epithelial circuits promote sensory convergence and intestinal immunity</p>
<p>go.nature.com/4qeRjlt</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Zhang et al. demonstrates that TRPV1+ pain-sensing nociceptors cooperate with chemosensory epithelial tuft cells via CGRP signaling to drive intestinal type 2 inflammation and anti-helminth immunity, showing that nociceptor activation promotes epithelial progenitor proliferation and that epithelial/tuft cell-intrinsic CGRP receptors are required for this tissue adaptation.</aside>]]></content:encoded>
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      <title>Mast cell-specific CysLT2 receptor signaling inhibits cysteinyl leukotriene-dependent mast cell activation and type 2 allergic lung inflammation</title>
      <link>https://plum.science/news/2026-01-04-mast-cell-specific-cyslt2-receptor-signaling-inhibits-c.html</link>
      <guid isPermaLink="true">https://plum.science/news/2026-01-04-mast-cell-specific-cyslt2-receptor-signaling-inhibits-c.html</guid>
      <pubDate>Wed, 20 May 2026 13:39:10 +0000</pubDate>
      <description>Mast cell-specific CysLT2 receptor signaling inhibits cysteinyl leukotriene-dependent mast cell activation and type 2 allergic lung inflammation</description>
      <content:encoded><![CDATA[<p>Mast cell-specific CysLT2 receptor signaling inhibits cysteinyl leukotriene-dependent mast cell activation and type 2 allergic lung inflammation</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Nagai et al. identifies mast cell-intrinsic CysLT2R as a checkpoint molecule that inhibits CysLT1R-mediated mast cell activation and dust mite-induced type 2 lung inflammation by leveraging G-beta-gamma-dependent adenylate cyclase potentiation to enhance cAMP/PKA signaling.</aside>]]></content:encoded>
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      <title>Mechanisms and clinical implications of gut-brain interactions</title>
      <link>https://plum.science/news/2026-01-03-review-jciorg-mechanisms-and-clinical-implications-of-g.html</link>
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      <pubDate>Wed, 20 May 2026 13:36:36 +0000</pubDate>
      <description>Review @jci.org Mechanisms and clinical implications of gut-brain interactionswww.jci.org/articles/vie...</description>
      <content:encoded><![CDATA[<p>Review @jci.org <br>Mechanisms and clinical implications of gut-brain interactions<br>www.jci.org/articles/vie...</p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This review by Lorsch and Liddle details the specific mechanisms of gut-brain communication—including the enteroendocrine-neural circuit and neuroimmunological pathways—and shows how these connections drive clinical disease and can be therapeutically leveraged by agents like GLP-1 receptor agonists.</aside>]]></content:encoded>
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      <title>Germline-encoded recognition of peanut underlies development of convergent antibodies in humans</title>
      <link>https://plum.science/news/2026-01-01-humans-may-be-genetically-programmed-to-produce-antibod.html</link>
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      <pubDate>Wed, 20 May 2026 13:34:40 +0000</pubDate>
      <description>Humans may be genetically programmed to produce antibodies against peanut, suggests a #ScienceTranslationalMedicine study showing nonallergic people harbor convergent, germline-encoded antibodies against the allergen Ara h 2. https://scim.ag/3LqfEp9</description>
      <content:encoded><![CDATA[<p>Humans may be genetically programmed to produce antibodies against peanut, suggests a #ScienceTranslationalMedicine study showing nonallergic people harbor convergent, germline-encoded antibodies against the allergen Ara h 2. <a href="https://scim.ag/3LqfEp9">https://scim.ag/3LqfEp9</a></p><aside style="border-left:3px solid #aaa;padding:0.5em 1em;font-style:italic;">This paper by Marini-Rapoport et al. reveals that human IgG recognition of the immunodominant peanut allergen Ara h 2 is intrinsically programmed by the germline antibody repertoire, driven by structural convergence across diverse, highly prevalent gene rearrangements that target a common public epitope in both allergic and non-allergic individuals.</aside>]]></content:encoded>
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      <title>In a #ScienceImmunology Review from earlier this year, researchers discuss how</title>
      <link>https://plum.science/news/2025-12-27-in-a-scienceimmunology-review-from-earlier-this-year-re.html</link>
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      <pubDate>Wed, 20 May 2026 13:33:36 +0000</pubDate>
      <description>In a #ScienceImmunology Review from earlier this year, researchers discuss how interactions between the nervous and immune systems could impact neurological disorders and allergy-related behaviors like food avoidance. https://scim.ag/3Y1hcsr</description>
      <content:encoded><![CDATA[<p>In a #ScienceImmunology Review from earlier this year, researchers discuss how interactions between the nervous and immune systems could impact neurological disorders and allergy-related behaviors like food avoidance. <a href="https://scim.ag/3Y1hcsr">https://scim.ag/3Y1hcsr</a></p>]]></content:encoded>
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      <title>An anti-allergy vaccine protects mice from anaphylaxis for as long as one year,</title>
      <link>https://plum.science/news/2025-12-03-an-anti-allergy-vaccine-protects-mice-from-anaphylaxis-.html</link>
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      <pubDate>Wed, 20 May 2026 13:32:02 +0000</pubDate>
      <description>This paper by Conde et al. demonstrates that a conjugate vaccine coupling a mutated human IgE fragment to a CRM carrier induces durable, neutralizing anti-IgE autoantibodies in humanized mice, providing long-term protection against systemic and cutaneous anaphylaxis without compromising anti-helminth immunity. #ScienceTranslationalMedicine. https://scim.ag/3XxHAdi</description>
      <content:encoded><![CDATA[<p>This paper by Conde et al. demonstrates that a conjugate vaccine coupling a mutated human IgE fragment to a CRM carrier induces durable, neutralizing anti-IgE autoantibodies in humanized mice, providing long-term protection against systemic and cutaneous anaphylaxis without compromising anti-helminth immunity. #ScienceTranslationalMedicine. <a href="https://scim.ag/3XxHAdi">https://scim.ag/3XxHAdi</a></p>]]></content:encoded>
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      <title>Central neural circuits underlying itch sensation — a Review by Yan-Gang</title>
      <link>https://plum.science/news/2025-10-24-central-neural-circuits-underlying-itch-sensation-a-rev.html</link>
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      <pubDate>Wed, 20 May 2026 13:28:49 +0000</pubDate>
      <description>Central neural circuits underlying itch sensation — a Review by Yan-Gang Sun
#neuroscience #neuroskyence
www.nature.com/articles/s41...</description>
      <content:encoded><![CDATA[<p>Central neural circuits underlying itch sensation — a Review by Yan-Gang Sun</p>
<p>#neuroscience #neuroskyence</p>
<p>www.nature.com/articles/s41...</p>]]></content:encoded>
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      <title>Nature research paper: Maternal stress triggers early-life eczema through fetal</title>
      <link>https://plum.science/news/2025-09-03-nature-research-paper-maternal-stress-triggers-early-li.html</link>
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      <pubDate>Wed, 20 May 2026 13:27:45 +0000</pubDate>
      <description>Nature research paper: Maternal stress triggers early-life eczema through fetal mast cell programming
go.nature.com/3UPz8Vm</description>
      <content:encoded><![CDATA[<p>Nature research paper: Maternal stress triggers early-life eczema through fetal mast cell programming</p>
<p>go.nature.com/3UPz8Vm</p>]]></content:encoded>
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      <title>The causes of early-life eczema have been unclear, but evidence indicates that</title>
      <link>https://plum.science/news/2025-08-27-the-causes-of-early-life-eczema-have-been-unclear-but-e.html</link>
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      <pubDate>Wed, 20 May 2026 13:25:05 +0000</pubDate>
      <description>The causes of early-life eczema have been unclear, but evidence indicates that changes to fetal immune cells and sensory neurons during pregnancy play a key part
go.nature.com/45Y9aUQ</description>
      <content:encoded><![CDATA[<p>The causes of early-life eczema have been unclear, but evidence indicates that changes to fetal immune cells and sensory neurons during pregnancy play a key part</p>
<p>go.nature.com/45Y9aUQ</p>]]></content:encoded>
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