Fibronectin variant mediates smooth muscle cell phenotypic switching

In this episode, Anil Chauhan, Manish Jain, and colleagues reveal that smooth muscle cell- specific fibronectin containing an extra domain A mediates phenotypic switching and neointimal hyperplasia.

Characterization of FOXN1 mutation-mediated immune deficiency

In this episode, Nicolai van Oers and colleagues demonstrate that compound heterozygous mutations in FOXN1 result in a combined immunodeficiency in patients that is distinct Nude/SCID phenotypes.

Breast milk-derived alkylglycerols support beige adipose tissue

In this episode, Tamás Röszer and colleagues demonstrate that breast-milk-derived alkylglycerols preserve beige adipocytes to protect against obesity.

Secondary insult reveals etiology of GATA2 enhancer mutation-associated blood disorder

The transcription factor GATA-2 is critical regulator of hematopoietic stem and progenitor cell (HSPC) development and function, and mutations in the enhancer region of GATA2 are linked to blood disorders. In this episode, Emery Bresnick and colleagues develop and characterize a mouse model that harbors a human disease-associated GATA2 enhancer mutation. In this model, hematopoietic development and function were normal unless the animals were exposed to a secondary stress that necessitated blood cell regeneration. The results of this study provide important insight into GATA-2-dependent pathogenesis.

Naturally occurring cone disorder in nonhuman primates

Achromatopsia is form of congenital retinal degeneration characterized by the loss of cone photoreceptor function, resulting in dramatic loss of visual acuity. Mouse models of cone disorders are available; however, clinical translation of these models is limited, as cone density in the murine retina is much less than that of humans. In this episode, Sara Thomasy and Ala Moshiri discuss the identification and characterization of a naturally occurring mutation in nonhuman primates that results in features that mirror human achromatopsia. This nonhuman primate model has high potential for therapeutic testing and optimization of gene editing and of cone cell replacement strategies.