🧬 biology

The nitroplast import signal is a C-terminal, glycine- and alanine- rich, proline-punctuated element: a controlled reanalysis that separates real targeting grammar from cross-species composition artefact

本论文重新分析了所提出的针对布拉鲁多斯氏球藻(*Braarudosphaera bigelowii*)中硝酸盐质体(nitroplast)的靶向信号,并得出结论:虽然确实存在一个独特的、富含甘氨酸和丙氨酸且由脯氨酸点缀的C末端元件,但其此前被报道的高特异性在很大程度上是由跨物种氨基酸组成的偏差所夸大的,而非代表了一种独特的、经过验证的靶向语法。

Cem Boyraz2026-07-30
🧬 biology

The inflammatory paradox of TLR4/NF-κB signaling in canine transmissible venereal tumors: why a protumoral pathway is associated with tumor stabilization

本综述提出,TLR4/NF-κB通路通过重编程炎症信号以抑制肿瘤生存机制并招募效应免疫细胞,从而矛盾地促进了犬传染性性传播肿瘤的稳定而非进展,同时强调了关键的研究空白并提出了验证该机制的实验策略。

Ulisses Nilo Landi, Rita de Cássia Lima Ribeiro, Nickole Mendes Gonçalves, Cayo César Novais Zanatto, Daniel Barreto Mas (…)2026-07-30
🧬 biology

Isolation and Characterization of PET-Degrading Bacteria from Plastic Waste- Contaminated Soil in Western India

本研究鉴定并表征了主要为假单胞菌属(*Pseudomonas*)和斯图策氏菌属(*Stutzerimonas*)的来自印度西部的塑料污染土壤中的本土聚对苯二甲酸乙二醇酯(PET)降解细菌,证明了它们在陆地及高盐环境中进行生物修复的潜力。

Rinkal Kachhadia, Suchismita Shrivastav, Hiral Chavada, Sulagna Roy, Milind Kulkarni2026-07-30
🧬 biology

Dietary Tryptophan Restriction Remodels the Skin Metabolic Environment and Drives Microbial Community Restructuring

这项研究表明,饮食中色氨酸的限制通过改变宿主-微生物代谢途径和 AhR 信号传导,重塑了皮肤的代谢环境,进而驱动了皮肤微生物群显著的、具有组织特异性的结构重组,且并未影响稳态下的免疫细胞组成。

Viviane A Agbogan, Pedro Goncalves, Camille Dupuy, Antoine Lefevre, Patrick Emond, Lydie Nadal-Desbarats, Nicolas Serafi (…)2026-07-30